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TEA685X User Manual

Device version /V102

Rev. 1.2 — 15 April 2014

User Manual

Document information

Info

Content

Keywords

Tiger-2, TEA6850, TEA6851, TEA6852, TEA6853, /V102, firmware 2.00,

API, I²C bus, control, car radio

Abstract

Overview of TEA685X series device control

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Contact information

For more information, please visit: http://www.nxp.com

For sales office addresses, please send an email to: salesaddresses@nxp.com

Revision history

Rev

Date

Description

‘Tiger-2’ TEA6850, TEA6851, TEA6852 and TEA6853, device version V102, user manual

Description of the TEA685X/V102 control interface (API) and related information

1.2

20140415

Change bars indicate changes from V102 user manual Rev. 1.1

6.2.1, 6.2.2, 6.2.3 updated with V102 required initialization p2.15

1.1

20140324

6.2.1, 6.2.2, 6.2.3 updated with V102 required initialization p2.14

1.0

20140306

6.2.1, 6.2.2, 6.2.3 updated with V102 required initialization p2.13

0.8

20140129

3.21 added note on ana_out = 2

3.32 corrected type numbers

4.2.3 increased allowed times using RDS data buffer

6.2.1, 6.2.2, 6.2.3 updated with V102 required initialization p2.12

0.6

20131210

6.2.1, 6.2.2, 6.2.3 updated with V102 required initialization p2.10

0.5

20131106

6.2.1, 6.2.2, 6.2.3 updated with V102 required initialization p2.09

0.4

20131018

Initial version

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1. Introduction

TEA685X (‘Tiger-2’) is a series of low cost single-chip car radio devices. The devices are

consumer qualified and primarily intended for aftersales (‘non-OEM’) market use.

The Tiger-2 series consists of four variants with increasing functionality; TEA6850,

TEA6851, TEA6852 and TEA6853.

All Tiger-2 variants offer worldwide standard FM band reception as well as AM LW and

MW band reception. In addition to the TEA6850 feature set the TEA6851, TEA6852 and

TEA6853 offer FM-OIRT band reception and FM enhanced multipath suppression

(‘EMS’) for improved field performance. On top of that the TEA6852 and TEA6853

include RDS/RBDS data reception and the TEA6853 additionally offers connectivity and

support for digital radio operation as well as AM SW band reception up to 27 MHz.

This user manual describes the TEA685X series control interface or API (Application

Programming Interface). The document describes the available write and read

commands with parameter and data definitions.

This document version contains limited background information regarding the feature

functionality and the offered control options so some general knowledge of car radio

functions is required.

This user manual describes the functionality and control of the TEA685X device version

V102 specifically (TEA685X/V102).

2. Control interface

2.1 Overview

The TEA685X devices are equipped with an I²C bus interface for control of the device.

Full control of the device functions and features is available using this single interface.

The I²C bus supports bit rates of up to 400 kbit/s in accordance with the ‘fast mode’ I²C

bus specification.

The control interface is described in this document on an abstract ‘application’ level as

well as on I²C protocol level.

The TEA685X interface definition is compatible with the TEF668X (Lithio), the TEF665X

(Atomic-2) and the TEF701X (Sabre) series of devices, although differing in available

commands reflecting the available functionality.

Future NXP car radio devices will employ the same interface allowing compatible control

between device types, versions and variants.

Via the I²C bus commands and parameters can be written to the device and information

can be read from the device.

TEA685X control is organized in modules. Modules are independent functional blocks

that can be regarded sub-devices within the device.

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The TEA685X consists of four modules:

 module 32 : FM = FM radio reception

 module 33 : AM = LW, MW and SW radio reception

 module 48 : AUDIO = Audio processing

 module 64 : APPL = System and application control

Different modules can be controlled independently even when the addressed module

itself is inactive at the time of control. This means modules can be prepared and

initialized before use.

Compatible command definitions have been used for the modules of FM and AM radio

where applicable. Defaults and range definitions may differ in some cases to fit the

different band properties.

Module commands have one or more parameters for control of the module behavior and

option selections.

The control is organized in such a way that future devices may support writing of a single

parameter up to writing of all parameters available for a given command.

Device version V102 however does not offer this flexibility and requires all command

parameters described in this document to be transmitted.

Fig 1 represents the TEA685X control interface as seen from the host controller.

HOST uC

radio

I²C

Module 32 = FM

Module 33 = AM

audio

generic

Module 48 = AUDIO

module 64 = APPL

Fig 1. I²C control –TEA685X

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TEA685X device variants are fully control compatible, although differing in available

features. Future derivatives of these devices will remain compatible also but possibly with

a different variation and extension in supported functions and features.

The API template of TEA685X and compatible devices will be used in future NXP car-

radio developments also, offering compatible control with additional variation in

supported functions and features.

The parameter ranges as depicted in this document are the guaranteed ranges for

operation. Control outside of these ranges is not allowed for application.

The command parameters in general allow for a higher range and granularity than what

is available from TEA685X. Parameters can be set to any value within the documented

range even where the actual number of available settings is less than offered by the

parameter. In these cases the TEA685X will realize the nearest available setting.

Information regarding the actual available granularity is limited in this document but will

be extended in future user manual updates.

2.2 History

The control interface of the TEA685X has been improved over previous product

generations in order to ensure and offer:

 Extendibility: Extension of modules, commands and parameters allowing addition

and extension of control options, features and functionality for future car radio

devices from low-end to high-end.

 Granularity and range: The parameter definition allows for extremely detailed

parameter setting and range extension where needed in the future.

 Reduced control effort: Although not supported for device version V102 the

interface definition allows for single parameter manipulation simplifying user

control software.

Although no direct compatibility is present it should be noted that the TEA685X command

interface shares most of its API functionality with previous products. A translation from

previous generation style control to the TEA685X control can therefore be made with little

effort. Description semantics and description units have been maintained between

generations to support easy transfer of settings.

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3. Write commands

Write commands allow control or setting of specific features. Writing consists of a

module, a command and an index value generally followed by one or more parameter

values.

The module value defines the processing part that is addressed. Modules are integral

functional parts of the device that can be regarded sub-devices. Available modules in the

TEA685X are 32 ‘FM’ for FM radio’, 33 ‘AM’ for AM radio, 48 ‘AUDIO’ for audio

processing and 64 ‘APPL’ for application and system settings.

The command value defines a control function, a feature setting or a set of feature

settings.

The index value is present for future use to allow writing of certain specific parameter

parts out of the available command parameters.

Device version V102 requires index = 1 to be used and requires all command parameters

described in this user manual to be transmitted.

The first parameter starts from index = 1.

Write commands are only available in the device ‘active state’ operation modes with the

exception of certain APPL commands available during ‘idle state’.

Independent from the selected ‘active state’ operation mode (‘radio standby’, ‘FM’ or

‘AM’) the write commands of every module are available for writing so full device

initialization is possible in any of the ‘active state’ operation modes.

Note: FM radio and AM radio are never available together. Enabling of one radio module

(by a tuning action command on that module) will disable the other radio module but

control to the disabled radio module remains available for initialization purposes.

For detailed information on the I²C protocol for write commands see 5.2 Write control.

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3.1 FM / AM cmd 1 Tune_To

Tuning within the active radio band or tuning to a different radio band with selection of

FM / AM operation.

module

32 / 33

FM / AM

cmd

Tune_To

mode, frequency

index

mode

[ 15:0 ]

tuning actions

0 = no action (reserved)

1 = Preset

Tune to new program with short mute time

Enable radio and FM/AM change where applicable

2 = Search

Tune to new program and stay muted

Enable radio and FM/AM change where applicable

3 = AF-Update

Tune to alternative frequency, store quality

and tune back with inaudible mute

4 = Jump

Tune to alternative frequency with short

inaudible mute

5 = Check

Tune to alternative frequency and stay

muted

3 … 5 = reserved

6 = reserved

7 = End

Release the mute of a Search or Check action

(frequency is not required and ignored)

frequency

[ 15:0 ]

tuning frequency

6500 … 7400

7600 … 10800

65.00 … 74.00 MHz (not for TEA6850)

76.00 … 180.00 MHz / 10 kHz step size

144 … 288

144 … 288 kHz / 1 kHz step size

522 … 1710

522 … 1710 kHz / 1 kHz step size

2300 … 27000

2.3 … 27 MHz / 1 kHz step (TEA6853 only)

Application example

FM_Tune_To (1, 1, 8930)

AM_Tune_To (1, 2, 990)

AM_Tune_To (1, 7)

Preset tuning to FM 89.3 MHz

Search tuning (from FM) to AM 990 kHz

End (release mute of AM Search action)

I²C example (hex)

[ w 20 01 01 0001 22E2 ]

[ w 21 01 01 0002 03DE ]

[ w 21 01 01 0007 ]

Preset tuning to FM 89.3 MHz

Search tuning (from FM) to AM 990 kHz

End (release mute of Search action)

3.1.1 radio tuning actions with setting of band and frequency

The mode control parameter allows for execution of different radio tuning actions.

The tuning actions take care of every detail of radio tuning; next to the obvious tuner

functions of band switching and frequency adjustment additional control is active for

inaudible audio mute, reset of quality detectors, reset or hold of weak signal processing

control and suppression of pop noise. All this functionality is an integrated part of

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TEA685X tuning. The set of tuning actions offered by TEA685X is an NXP standard and

found in car radio devices for many generations.

The set of tuning actions frees the controlling C from all non-essential timing and control

complexity, however control flexibility is not limited in any way because the full ‘decision

intelligence’ remains at the C side. The tuning actions can be regarded building blocks

for creating the desired radio tuning control. Tuning actions can be chained together to

build complete tuning routines or realize a single basic routine by themselves.

A total of six mode tuning actions are defined for different types of tuning.

mode = 1 ; Preset

mode = 1 performs a complete ‘Preset-change’ tuning for tuning to a new program or

possibly to a new band. For a Preset-change it is desired to start the new program

immediately with the best quality possible, therefore time constants of the weak signal

handling and AM demodulator AGC are controlled for fast settling to the new signal

conditions within a small preset mute time of approx. 32 ms for FM and 60 ms for AM

bands.

mode = 2 ; Search:

mode = 2 performs a tuning action to create a search to a new program (previous / next

search) or searching for several programs (auto-store).

Search is equal in function to a Preset action however the mute is not released

automatically. This allows signal conditions to be checked while muted and when

insufficient reception quality is found a new Search action can be activated again and

again for a new frequency until a valid search stop condition is found.

Mute can then be released by an End action (mode = 7).

Also a Preset may be used as the last ‘search’ tuning action to release mute.

Preset and Search employ a 10 ms mute and de-mute slope timing for gentle program

switching, so actual tuning is delayed by 10 ms. In case mute is already active (like from

a previous Search action) no mute delay is present and tuning is started instantly.

A Preset and Search tuning action also allows for band switching between FM and AM.

An AM Preset or AM Search will disable ‘radio standby’ or ‘FM’ operation and enable AM

module operation. Equally an FM Preset or FM Search will enable FM module operation.

Note the 10 ms mute delay time should also be taken into account when switching

between FM and AM module operation.

mode = 3 ; AF_Update:

mode = 3 performs a complete ‘alternative frequency update’ tuning cycle for inaudible

testing of the quality of alternative frequencies in the background. AF_Update tunes to an

alternative frequency, gathers signal quality information and returns to the original

frequency within a very short time.

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Inaudible mute is employed and the measured AF quality information is stored for easy

read-out by I²C. Time constants of the weak signal handling and DC decoupling are

controlled so they are not disturbed by the AF signal conditions.

A default AF_Update cycle finishes within 6 ms for the complete action including mute

enabling and disabling.

For AF_Update options like the bandwidth used during AF_Update tuning see 3.2 FM

cmd 2 Set_Tune_Options.

mode = 4 ; Jump:

mode = 4 performs a complete tuning action for switching to a ‘known’ alternative

frequency. Jump performs a tuning with a minimum mute time, only intended to suppress

PLL tuning disturbances. Starting from the control setting of the previous frequency the

weak signal handling will change gradually to the new signal conditions using the

standard weak signal timings, as desired for an inaudible switching to an alternative

frequency with the same program.

Since Jump releases mute automatically it must be assumed that the new frequency

indeed contains the same program. Should it later be found this is not the case (e.g. by

reading the RDS PI code) a new Jump is the designated tuning action for a fast return to

the original frequency.

mode = 5 ; Check:

mode = 5 performs a tuning action for switching to an ‘unknown’ alternative frequency.

Check is equal in function to a Jump action however the mute is not released

automatically. During the Check mute an RDS PI code can be searched for and verified

and if a valid program is found mute can be released by an End action (mode = 7).

During mute the weak signal handling is not disturbed by the new signal conditions and

after mute release the weak signal handling will gradually change to the new conditions

using the standard weak signal timings. In case an invalid program is found a Jump is the

designated tuning action for a fast return to the original frequency.

It is possible to string several Check transmissions together to create an AF_Update like

routine for checking several AF signal conditions in a row. Such a string of Check

transmissions may be finished by mode = End or Jump or, alternatively, by mode =

AF_Update in which case a ‘standard’ AF_Update is executed with quality data hold

while returning to the original frequency as present before the string of Check tunings.

Note: AF_Update, Jump and Check employ a 1 ms mute and de-mute slope timing for

fast inaudible switching, so actual tuning is delayed by 1 ms. In case mute is already

active (presumably by a previous Check action) no mute delay is present and tuning is

started instantly.

mode = 7 ; End:

mode = 7 ends a currently active tuning action. End releases the sustained mute of a

Search (mode = 2) or Check (mode = 5) tuning action.

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An End action does not require any additional data, so only the mode parameter needs

to be transmitted. In case the frequency is included it is ignored. End is only effective for

the currently active radio band (module setting).

3.2 FM cmd 2 Set_Tune_Options

Settings used during a tuning action (FM AF_Update).

module

cmd

Set_Tune_Options

afu_bw_mode, afu_bandwidth, afu_mute_time, afu_sample_time

index

afu_bw_mode

[ 15:0 ]

IF bandwidth control mode during AF_Update

0 = fixed (default)

1 = automatic bandwidth

afu_bandwidth

[ 15:0 ]

fixed IF bandwidth during AF_Update

970 … 3110 [*0.1 kHz] = IF bandwidth 97 … 311 kHz; narrow … wide

2360 = 236 kHz (default)

afu_mute_time

[ 15:0 ]

AF_update inaudible mute slope time

250 … 1000 [* 1 us] = 0.25 … 1 ms

1000 = 1 ms (default)

afu_sample_time

[ 15:0 ]

AF_update sampling time

1000 … 20000 [* 1 us] = 1 … 20 ms

2000 = 2 ms (default)

Application example

FM_Set_Tune_Options (1, 0, 1680, 1000, 2000)

168 kHz bandwidth during AFU

I²C example (hex)

[ w 20 02 01 0000 0690 03E8 07D0 ]

168 kHz bandwidth during AFU

Note: afu_sample_time is accurate to 1 ms intervals and a minimum of 2 ms is advised

for sufficient settling of all quality detectors.

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3.3 FM / AM cmd 10 Set_Bandwidth

Fixed bandwidth selection of the radio selectivity filter.

For FM automatic bandwidth control can be selected with control sensitivity options.

module

32 / 33

FM / AM

cmd

Set_Bandwidth

FM : mode, bandwidth, control_sensitivity, low_level_sensitivity

AM : mode, bandwidth

index

mode

[ 15:0 ]

IF bandwidth control mode

0 = fixed

1 = automatic (default)

0 = fixed (default)

bandwidth

[ 15:0 ]

fixed IF bandwidth

970 … 3110 [*0.1 kHz] = IF bandwidth 97 … 311 kHz; narrow … wide

2360 = 236 kHz (default)

30 … 80 [*0.1 kHz] = IF bandwidth 3 … 8 kHz; narrow … wide

40 = 4.0 kHz (default)

control_sensitivity

[ 15:0 ]

FM automatic IF bandwidth control sensitivity

500 … 1500 [*0.1 %] = 50 … 150 % relative adjacent channel sensitivity

1000 = 100 % (default)

low_level_sensitivity

[ 15:0 ]

FM automatic IF bandwidth control sensitivity for low level conditions

500 … 1500 [*0.1 %] = 50 … 150 % relative adjacent channel sensitivity

1000 = 100 % (default)

Application example

FM_Set_Bandwidth (1, 1, 2360, 1000, 1000)

AM_Set_Bandwidth (1, 0, 40)

FM_Set_Bandwidth (1, 0, 2360, 1000, 1000)

FM_Set_Bandwidth (1, 1, 2360, 800, 1000)

FM_Set_Bandwidth (1, 1, 2360, 1000, 800)

All parameters with FM default value

All parameters with AM default value

bandwidth = fixed 236 kHz

control_sensitivity = 80 %

control+low_level sensitivity = 80 %

I²C example (hex)

[ w 20 0A 01 0001 0938 03E8 03E8 ]

[ w 21 0A 01 0000 0028 ]

[ w 20 0A 01 0000 0938 03E8 03E8 ]

[ w 20 0A 01 0001 0938 0320 03E8 ]

[ w 20 0A 01 0001 0938 03E8 0320 ]

All parameters with FM default value

All parameters with AM default value

FM bandwidth = fixed 236 kHz

control_sensitivity = 80 %

control+low_level sensitivity = 80 %

Note: For FM the following twelve bandwidth settings are supported: 97 / 114 / 133 / 151

/ 168 / 184 / 200 / 217 / 236 / 254 / 287 / 311 kHz.

For AM the following four bandwidth settings are supported: 3 / 4 / 6 / 8 kHz.

Other bandwidth parameter values are rounded to the nearest supported bandwidth.

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3.4 FM / AM cmd 11 Set_RFAGC

Start level of the tuner front-end AGC.

Performance balancing of desensitization (high start level) against inter-modulation (low

start level).

module

32 / 33

FM / AM

cmd

Set_RFAGC

FM: start, extension

AM: start

index

start

[ 15:0 ]

RF AGC start

860 … 900 [*0.1 dBV) = 86 … 90 dBV

920 = 92 dBV (default)

960 … 1000 (*0.1 dBV) = 96 … 100 dBV

1000 = 100 dBV (default)

extension

[ 15:0 ]

reserved

0 = (default)

reserved

Application example

FM_Set_RFAGC (1, 890, 0)

AM_Set_RFAGC (1, 970)

FM RF AGC start at 89 dBV

AM RF AGC start at 97 dBV

I²C example (hex)

[ w 20 0B 01 037A 0000 ]

[ w 21 0B 01 03CA ]

FM RF AGC start at 89 dBV

AM RF AGC start at 97 dBV

Note: Transmission of FM parameter 2 is not required.

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3.5 AM cmd 12 Set_Antenna

AM antenna attenuation control (RF AGC attenuation limit).

In case of an AM active antenna application part of the required level correction can be

located in the front-end.

module

cmd

Set_Antenna

attenuation

[ 15:0 ]

LNA gain reduction

0 / 60 / 120 / 180 / 240 / 300 / 360 (*0.1 dB) = 0 … 36 dB antenna

attenuation (6 dB step size)

0 = no attenuation (default)

Application example

AM_Set_Antenna (1, 180)

AM 18 dB antenna attenuation

I²C example (hex)

[ w 21 0C 01 00B4 ]

AM 18 dB antenna attenuation

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3.6 FM cmd 20 Set_MphSuppression

Available for TEA6851, TEA6852 and TEA6853 only.

Optional use of the ‘EMS’ FM multipath suppression system.

module

cmd

Set_MphSuppression

mode

index

mode

[ 15:0 ]

FM multipath suppression

0 = off (default)

1 = on

Application example

FM_Set_MphSuppression (1, 1)

FM_Set_MphSuppression (1, 0)

Enable the multipath suppression

Disable the multipath suppression

I²C example (hex)

[ w 20 14 01 0001 ]

[ w 20 14 01 0000 ]

Enable the multipath suppression

Disable the multipath suppression

Note: The advised setting is ‘on’ for improved field performance.

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3.7 FM / AM cmd 23 Set_NoiseBlanker

Noise blanker options and sensitivity setting.

module

32 / 33

FM / AM

cmd

Set_NoiseBlanker

mode, sensitivity

index

mode

[ 15:0 ]

noise blanker

0 = off

1 = on (default)

sensitivity

[ 15:0 ]

trigger sensitivity

500 … 1500 [*0.1 %] = 50 … 150 % relative trigger sensitivity

1000 = 100 % (default)

Application example

FM_Set_NoiseBlanker (1, 1, 1000)

AM_Set_NoiseBlanker (1, 1, 1000)

AM_Set_NoiseBlanker (1, 1, 1200)

FM default values

AM default values

sensitivity 120% for more suppression

I²C example (hex)

[ w 20 17 01 0001 03E8 ]

[ w 21 17 01 0001 03E8 ]

[ w 21 17 01 0001 04B0 ]

FM default values

AM default values

sensitivity 120% for more suppression

3.8 AM cmd 24 Set_NoiseBlanker_Audio

AM Audio noise blanker options and sensitivity setting.

module

cmd

Set_NoiseBlanker_Audio

mode, sensitivity

index

mode

[ 15:0 ]

AM audio noise blanker (audio frequency detection)

0 = off

1 = on (default)

sensitivity

[ 15:0 ]

AM audio noise blanker trigger sensitivity

500 … 1500 [*0.1 %] = 50 … 150 % relative trigger sensitivity

1000 = 100 % (default)

Application example

AM_Set_NoiseBlanker_Audio (1, 1, 1000)

AM_Set_NoiseBlanker_Audio (1, 1, 1200)

AM default values

sensitivity 120% for more suppression

I²C example (hex)

[ w 21 18 01 0001 03E8 ]

[ w 21 18 01 0001 04B0 ]

AM default values

sensitivity 120% for more suppression

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3.9 FM / AM cmd 30 Set_DigitalRadio

Available for TEA6853 only.

Enabling of signal lines for external digital radio processor; DR I²S output.

Note: See 3.20 FM / AM cmd 84 Set_DR_Options for additional digital radio options.

module

32 / 33

FM / AM

cmd

Set_DigitalRadio

mode

index

mode

[ 15:0 ]

digital radio

0 = off (default)

1 = on

Application example

FM_Set_DigitalRadio (1, 1)

AM_Set_DigitalRadio (1, 1)

Enable digital radio for FM use

Enable digital radio for AM use

I²C example (hex)

[ w 20 1E 01 0001 ]

[ w 21 1E 01 0001 ]

Enable digital radio for FM use

Enable digital radio for AM use

3.10 FM cmd 31 Set_Deemphasis

Selection of FM deemphasis time constant

module

cmd

Set_Deemphasis

timeconstant

index

timeconstant

[ 15:0 ]

deemphasis time constant

0 = off; for evaluation purposes only

500 = 50 s deemphasis (default)

750 = 75 s deemphasis

Application example

FM_Set_Deemphasis (1, 750)

75 s deemphasis

I²C example (hex)

[ w 20 1F 01 02EE ]

75 s deemphasis

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3.11 FM / AM cmd 38 Set_LevelStep

Selection of level correction as a function of the tuner front-end AGC.

The level step offset is included in the weak signal handling and the level read value of

Get_Quality (4.1 FM / AM cmd 128 / 129 Get_Quality).

A setting of 0 dB will show no level change by full compensation of the actual -6 dB AGC

attenuation step. Instead a setting of -6 dB will show the actual AGC attenuation step.

module

32 / 33

FM / AM

cmd

Set_LevelStep

step1, step2, step3, step4, step5, step6, step7

index

step1

[ 15:0 ]

level offset for an AGC step from 0 to 1

-60 … 0 (*0.1 dB) = -6 … 0 dB

-20 = -2 dB (FM default) / -10 = -1 dB (AM default)

step2

[ 15:0 ]

level offset for an AGC step from 1 to 2

-60 … 0 (*0.1 dB) = -6 … 0 dB

-30 = -3 dB (FM default) / -20 = -2 dB (AM default)

step3

[ 15:0 ]

level offset for an AGC step from 2 to 3

-60 … 0 (*0.1 dB) = -6 … 0 dB

-40 = -4 dB (FM default) / -30 = -3 dB (AM default)

step4

[ 15:0 ]

level offset for an AGC step from 3 to 4

-60 … 0 (*0.1 dB) = -6 … 0 dB

-50 = -5 dB (FM default) / -40 = -4 dB (AM default)

step5

[ 15:0 ]

level offset for an AGC step from 4 to 5

-60 … 0 (*0.1 dB) = -6 … 0 dB

-60 = -6 dB (FM default) / -50 = -5 dB (AM default)

step6

[ 15:0 ]

level offset for an AGC step from 5 to 6

-60 … 0 (*0.1 dB) = -6 … 0 dB

-60 = -6 dB (default)

step7

[ 15:0 ]

level offset for an AGC step from 6 to 7 (or higher)

-60 … 0 (*0.1 dB) = -6 … 0 dB

-60 = -6 dB (default)

Application example

AM_Set_LevelStep(1, 0, -10, -20, -30, -40, -50, -60)

AM_Set_LevelStep(1, -20, -30, -40, -50, -60, -60, -60)

AM increased level extension

AM decreased level extension

I²C example (hex)

[ w 21 26 01 0000 FFF6 FFEC FFE2 FFD8 FFCE FFC4 ]

[ w 21 26 01 FFEC FFE2 FFD8 FFCE FFC4 FFC4 FFC4 ]

AM increased level extension

AM decreased level extension

Note: Adaptation of the LevelStep default values is not advised in general but allows for a

specific fine-tuning of the weak signal handling in high signal conditions.

Note: The indicated steps are the added values of feedback and input AGC steps.

Note: AGC steps higher than step 7 will employ the step 7 setting.

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3.12 FM / AM cmd 39 Set_LevelOffset

Selection of level correction.

The level offset can be used as an overall correction for antenna noise level and is

included in the weak signal handling and the level read value of Get_Quality (4.1 FM /

AM cmd 128 / 129 Get_Quality). A standard use case is the compensation for AM

active antenna circuits (typical offset setting = -30 dB).

module

32 / 33

FM / AM

cmd

Set_LevelOffset

offset

index

offset

[ 15:0 ] signed

level offset

-480 … +150 (*0.1 dB) = -48 … +15 dB

0 = 0 dB (default)

Application example

AM_Set_LevelOffset (1, -300)

-30 dB level correction

I²C example (hex)

[ w 21 27 01 FED4 ]

-30 dB level correction

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3.13 FM / AM cmd 40 … 45 Set_Softmute

Timing and quality sensitivity settings for the Softmute weak signal handling.

‘Set_Softmute_Time’ defines the weak signal handling response times active for the level

detector and FM noise and multipath detectors. Fast and slow response times are

available for dual timer functionality, with enable options at the level, noise and mph

commands.’

‘Set_Softmute_Level’ sets the level sensitivity and enables slow and fast timing.

‘Set_Softmute_Noise’ and ‘Set_Softmute_Mph’ set the noise and multipath sensitivity

and enables slow and fast timing (FM only)

‘Set_Softmute_Max’ enables and defines the maximum amount of softmute attenuation

(as realized for poor signal conditions).

module

32 / 33

FM / AM

cmd

Set_Softmute_Time

slow_attack, slow_decay, fast_attack, fast_decay

index

slow_attack

[ 15:0 ]

slow attack time of weak signal handling

60 … 2000 (ms) = 60 ms … 2 s slow attack time

120 = 120 ms (default)

slow_decay

[ 15:0 ]

slow decay time of weak signal handling

120 … 12500 (ms) = 120 ms … 12.5 s slow attack time

500 = 500 ms (default)

fast_attack

[ 15:0 ]

fast attack time of weak signal handling

10 … 1200 (*0.1 ms) = 1 ms … 120 ms fast attack time

20 = 2 ms (FM default) / 120 = 12 ms (AM default)

fast_decay

[ 15:0 ]

fast decay time of weak signal handling

20 … 5000 ( *0.1 ms) = 2 ms … 500 ms fast attack time

20 = 2 ms (FM default) / 500 = 50 ms (AM default)

Application example

FM_Set_Softmute_Time (1, 120, 500, 10, 20)

AM_Set_Softmute_Time (1, 500, 4000, 100,

500)

Slow 120 / 500 ms, fast 1 / 2 ms

Slow 500 / 4000 ms, fast 10 / 50 ms

I²C example (hex)

[ w 20 28 01 0078 01F4 000A 0014 ]

[ w 21 28 01 01F4 0FA0 0064 01F4 ]

Slow 120 / 500 ms, fast 1 / 2 ms

Slow 500 / 4000 ms, fast 10 / 50 ms

Note: Suggested FM setting is 1 ms fast_attack for improved field performance.

module

32 / 33

FM / AM

cmd

Set_Softmute_Level

mode, start, slope

index

mode

[ 15:0 ]

timer selection

0 = off (only for evaluation)

1 = fast timer control

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2 = slow timer control (default)

3 = dual timer control; combined fast and slow timer control

start

[ 15:0 ]

weak signal handling level start

0 … 500 [*0.1 dBV] = control when level falls below 0 dBV … 50 dBV

150 = 15 dBV (FM default) / 280 = 28 dBV (AM default)

slope

[ 15:0 ]

weak signal handling level range

60 … 300 [*0.1 dB] = control over level range of 6 dB … 30 dB

220 = 22 dB (FM default) / 250 = 25 dB (AM default)

Note: Suggested AM setting for LW band is 34 dBV start and 30 dB slope for improved

field performance.

module

cmd

Set_Softmute_Noise

mode, start, slope

index

mode

[ 15:0 ]

timer selection

0 = off (default)

1 = fast timer control

2 = slow timer control

3 = dual timer control; combined fast and slow timer control

start

[ 15:0 ]

FM weak signal handling noise start

0 … 800 [*0.1 %] = control when noise above 0… 80% of USN detector

500 = 50% (default)

slope

[ 15:0 ]

FM weak signal handling noise range

100 … 1000 [*0.1 %] = control over range of 10… 100% of USN detector

1000 = 100% (default)

module

cmd

Set_Softmute_Mph

mode, start, slope

index

mode

[ 15:0 ]

timer selection

0 = off (default)

1 = fast timer control

2 = slow timer control

3 = dual timer control; combined fast and slow timer control

start

[ 15:0 ]

FM weak signal handling multipath start

0 … 800 [*0.1 %] = control when mph above 0… 80% of WAM detector

500 = 50% (default)

slope

[ 15:0 ]

FM weak signal handling multipath range

100 … 1000 [*0.1 %] = control over range of 10… 100% of WAM detector

1000 = 100% (default)

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module

32 / 33

FM / AM

cmd

Set_Softmute_Max

mode, limit

index

mode

[ 15:0 ]

weak signal handling (dynamic control)

0 = off (for evaluation only)

1 = on; maximum dynamic control defined by limit parameter (default)

limit

[ 15:0 ]

softmute dynamic attenuation limit

0 … 400 [*0.1 dB] = 0 … 40 dB softmute maximum attenuation

200 = 20 dB (FM default) / 250 = 25 dB (AM default)

Application example

FM_Set_Softmute_Max (1, 1, 240)

AM_Set_Softmute_Max (1, 1, 300)

FM 24 dB max. softmute attenuation

AM 30 dB max. softmute attenuation

I²C example (hex)

[ w 20 2D 01 0001 00F0 ]

[ w 21 2D 01 0001 012C ]

FM 24 dB max. softmute attenuation

AM 30 dB max. softmute attenuation

Suggested AM setting for LW band is 33 dB limit.

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3.14 FM / AM cmd 50 … 59 Set_Highcut

Timing and quality sensitivity settings for the Highcut weak signal handling.

‘Set_Highcut_Time’ defines the weak signal handling response times active for the level

detector and FM noise and multipath detectors. Fast and slow response times are

available for dual timer functionality, with enable options at the level, noise and mph

commands.’

‘Set_Highcut_Level’ sets the level sensitivity and enables slow and fast timing.

‘Set_Highcut_Noise’ and ‘Set_Highcut_Mph’ set the noise and multipath sensitivity and

enables slow and fast timing (FM only)

‘Set_Highcut_Max’ enables and defines the maximum amount of Highcut attenuation (as

realized for poor signal conditions).

‘Set_Highcut_Min’ optionally defines a minimum amount of Highcut attenuation (as

realized for good signal conditions).

‘Set_Lowcut_Min’ optionally defines a minimum attenuation for low signal frequencies.

‘Set_Highcut_Options’ allows selection between three different Highcut control

characteristics (FM only).

module

32 / 33

FM / AM

cmd

Set_Highcut_Time

slow_attack, slow_decay, fast_attack, fast_decay

index

slow_attack

[ 15:0 ]

slow attack time of weak signal handling

60 … 2000 (ms) = 60 ms … 2 s slow attack time

500 = 500 ms (default)

slow_decay

[ 15:0 ]

slow decay time of weak signal handling

120 … 12500 (ms) = 120 ms … 12.5 s slow attack time

2000 = 2 s (default)

fast_attack

[ 15:0 ]

fast attack time of weak signal handling

10 … 1200 (*0.1 ms) = 1 ms … 120 ms fast attack time

20 = 2 ms (FM default) / 120 = 12 ms (AM default)

fast_decay

[ 15:0 ]

fast decay time of weak signal handling

20 … 5000 ( *0.1 ms) = 2 ms … 500 ms fast attack time

20 = 2 ms (FM default) / 500 = 50 ms (AM default)

Application example

FM_Set_Highcut_Time (1, 200, 500, 10, 80)

AM_Set_Highcut_Time (1, 500, 4000, 100, 500)

Slow 200 / 500 ms, fast 1 / 8 ms

Slow 500 / 4000 ms, fast 10 / 50 ms

I²C example (hex)

[ w 20 32 01 00C8 01F4 000A 0050 ]

[ w 21 32 01 01F4 0FA0 0064 01F4 ]

Slow 200 / 500 ms, fast 1 / 8 ms

Slow 500 / 4000 ms, fast 10 / 50 ms

Note: Suggested FM settings are 200 ms slow_attack, 1 ms fast_attack and 8 ms fast_

decay for improved field performance.

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module

32 / 33

FM / AM

cmd

Set_Highcut_Level

mode, start, slope

index

mode

[ 15:0 ]

timer selection

0 = off (only for evaluation)

1 = fast timer control

2 = slow timer control (AM default)

3 = dual timer control; combined fast and slow timer control (FM default)

start

[ 15:0 ]

weak signal handling level start

200 … 600 [*0.1 dBV] = control when level is below 20 dBV … 60 dBV

360 = 36 dBV (FM default) / 400 = 40 dBV (AM default)

slope

[ 15:0 ]

weak signal handling level range

60 … 300 [*0.1 dB] = control over level range of 6 dB … 30 dB

300 = 30 dB (FM default) / 200 = 20 dB (AM default)

Note: Suggested AM setting for MW and SW band is 47 dBV start for improved field

performance. Suggested for AM LW band is 52 dBV start.

module

cmd

Set_Highcut_Noise

mode, start, slope

index

mode

[ 15:0 ]

timer selection

0 = off

1 = fast timer control

2 = slow timer control (default)

3 = dual timer control; combined fast and slow timer control

start

[ 15:0 ]

FM weak signal handling noise start

0 … 800 [*0.1 %] = control when noise above 0… 80% of USN detector

360 = 36% (default)

slope

[ 15:0 ]

FM weak signal handling noise range

100 … 1000 [*0.1 %] = control over range of 10… 100% of USN detector

300 = 30% (default)

Note: Suggested is ‘dual timer’ mode, 15% start and 20% slope for improved field

performance.

module

cmd

Set_Highcut_Mph

mode, start, slope

index

mode

[ 15:0 ]

timer selection

0 = off (only for evaluation)

1 = fast timer control

2 = slow timer control (default)

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3 = dual timer control; combined fast and slow timer control

start

[ 15:0 ]

FM weak signal handling multipath start

0 … 800 [*0.1 %] = control when mph above 0… 80% of WAM detector

360 = 36% (default)

slope

[ 15:0 ]

FM weak signal handling multipath range

100 … 1000 [*0.1 %] = control over range of 10… 100% of WAM detector

300 = 30% (default)

Note: Suggested is ‘dual timer’ mode, 18% start and 20% slope for improved field

performance.

module

32 / 33

FM / AM

cmd

Set_Highcut_Max

mode, limit

index

mode

[ 15:0 ]

weak signal handling (dynamic control)

0 = off; for evaluation only

1 = on; maximum dynamic control set by limit parameter (default)

limit

[ 15:0 ]

Highcut attenuation limit

Highcut corner frequency for maximum -3 dB attenuation

4000 = 4 kHz (default)

1500 … 7000 [*1 Hz] = 1.5 … 7 kHz ‘IIR’ filter (Options ‘1’ (default))

700 … 3000 [*1 Hz] = 0.7 … 3 kHz ‘deemphasis’ mode (Options ‘2’)

2700 … 7000 [*1 Hz] = 2.7 … 7 kHz ‘FIR’ highcut filter (Options ‘3’)

1350 … 7000 [*1 Hz] = 1.35 … 7 kHz Highcut maximum -3 dB att.

1800 = 1.8 kHz (default)

Application example

FM_Set_Highcut_Max (1, 1, 2400)

AM_Set_Highcut_Max (1, 1, 1500)

FM 2.4 kHz max. Highcut attenuation

AM 1.5 kHz max. Highcut attenuation

I²C example (hex)

[ w 20 37 01 0001 0960 ]

[ w 21 37 01 0001 05DC ]

FM 2.4 kHz max. Highcut attenuation

AM 1.5 kHz max. Highcut attenuation

Note: For FM different limit ranges apply for the different Highcut control characteristics

as available from FM Set_Highcut_Options (cmd = 59).

Note: Suggested FM setting is 2.4 kHz limit for improved ‘IIR’ filter field performance.

module

32 / 33

FM / AM

cmd

Set_Highcut_Min

mode, limit

index

mode

[ 15:0 ]

strong signal handling

0 = off; high audio frequency bandwidth is not limited (FM default)

1 = on; minimum control limit set by limit parameter (AM default)

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limit

[ 15:0 ]

Highcut fixed attenuation limit

Highcut corner frequency for minimum -3 dB attenuation

10000 = 10 kHz (default)

2700 … 15000 [*1 Hz] = 2.7 … 15 kHz ‘IIR’ filter (Options ‘1’ (default))

1500 … 3183 [*1 Hz] = 1.5 … 3.18 kHz ‘deemphasis’ (Options ‘2’)

2122 = 75 s deemphasis / 3183 = 50 s deemphasis

2700 … 15000 [*1 Hz] = 2.7 … 15 kHz ‘FIR’ highcut filter (Options ‘3’)

2700 … 15000 [*1 Hz] = 2.7 … 15 kHz -3 dB att. for min. Highcut

6000 = 6 kHz (default)

Application example

FM_Set_Highcut_Min (1, 1, 10000)

AM_Set_Highcut_Min (1, 1, 3000)

FM 10 kHz min. Highcut attenuation

AM 3 kHz min. Highcut attenuation

I²C example (hex)

[ w 20 38 01 0001 2710 ]

[ w 21 38 01 0001 0BB8 ]

FM 10 kHz min. Highcut attenuation

AM 3 kHz min. Highcut attenuation

Note: In case of characteristic ‘deemphasis’ from FM cmd 59 Set_Highcut_Options

mode = 2, the FM cmd 31 Set_Deemphasis setting is ignored and 50 s or 75 s

deemphasis is defined by FM_Set_Highcut_Min parameters mode = 1, and limit instead.

module

32 / 33

FM / AM

cmd

Set_Lowcut_Min

mode, limit

index

mode

[ 15:0 ]

strong signal handling

0 = off; low audio frequency bandwidth is not limited (FM default)

1 = on; minimum control limit set by limit parameter (AM default)

limit

[ 15:0 ]

Lowcut fixed attenuation limit

10 … 200 [Hz] = 10 … 200 Hz Lowcut minimum -3 dB attenuation

20 = 20 Hz (default)

Application example

FM_Set_Lowcut_Min (1, 1, 10)

AM_Set_Lowcut_Min (1, 1, 30)

FM 10 Hz min. Lowcut attenuation

AM 30 Hz min. Lowcut attenuation

I²C example (hex)

[ w 20 3A 01 0001 000A ]

[ w 21 3A 01 0001 001E ]

FM 10 Hz min. Lowcut attenuation

AM 30 Hz min. Lowcut attenuation

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26 of 81

module

cmd

Set_Highcut_Options

mode

index

mode

[ 15:0 ]

FM Highcut control characteristics

1 = IIR; ‘analog’ first order lowpass filter with controlled frequency (default)

2 = deemphasis; controlled frequency of the 50 / 75 s deemphasis filter

3 = FIR; ‘digital’ high order lowpass filter with controlled frequency

Application example

FM_Set_Highcut_Options (1, 2)

FM ‘deemphasis’ type Highcut control

I²C example (hex)

[ w 20 3B 01 0002 ]

FM ‘deemphasis’ type Highcut control

Note: Different FM Highcut control characteristics are available for selection of sound

taste.

Note: In addition to the _Options selection of the Highcut filter type appropriate values

should be written to FM_Set_Highcut_Min and FM_Set_Highcut_Max.

Note: In case of ‘deemphasis’ characteristics the FM_Set_Deemphasis setting is ignored

and selection of 50 s or 75 s deemphasis is defined by FM_Set_Highcut_Min instead.

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3.15 FM cmd 60 … 66 Set_Stereo

Timing and quality sensitivity settings for the FM Stereo weak signal handling.

‘Set_Stereo_Time’ defines the weak signal handling response times active for the level

detector and noise and multipath detectors. Fast and slow response times are available

for dual timer functionality, with enable options at the level, noise and mph commands.’

‘Set_Stereo_Level’ sets the level sensitivity and enables slow and fast timing.

‘Set_Stereo_Noise’ and ‘Set_Stereo_Mph’ set the noise and multipath sensitivity and

enables slow and fast timing.

‘Set_Stereo_Max’ allows disabling the dynamic stereo control for evaluation purposes.

‘Set_Stereo_Min’ optionally defines a minimum amount of Stereo attenuation (as realized

for good signal conditions).

module

cmd

Set_Stereo_Time

slow_attack, slow_decay, fast_attack, fast_decay

index

slow_attack

[ 15:0 ]

slow attack time of weak signal handling

60 … 2000 (ms) = 60 ms … 2 s slow attack time

1000 = 1 s (default)

slow_decay

[ 15:0 ]

slow decay time of weak signal handling

120 … 12500 (ms) = 120 ms … 12.5 s slow attack time

4000 = 4 s (default)

fast_attack

[ 15:0 ]

fast attack time of weak signal handling

10 … 1200 (*0.1 ms) = 1 ms … 120 ms fast attack time

80 = 8 ms

fast_decay

[ 15:0 ]

fast decay time of weak signal handling

20 … 5000 ( *0.1 ms) = 2 ms … 500 ms fast attack time

80 = 8 ms

Application example

FM_Set_Stereo_Time (1, 200, 4000, 20, 80)

Slow 200 / 4000 ms, fast 2 / 8 ms

I²C example (hex)

[ w 20 3C 01 00C8 0FA0 0014 0050 ]

Slow 200 / 4000 ms, fast 2 / 8 ms

Note: Suggested is 200 ms slow_attack and 2 ms fast_attack for improved field

performance.

module

cmd

Set_Stereo_Level

mode, start, slope

index

mode

[ 15:0 ]

timer selection

0 = off (only for evaluation)

1 = fast timer control

2 = slow timer control

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3 = dual timer control; combined fast and slow timer control (default)

start

[ 15:0 ]

weak signal handling level start

300 … 600 [*0.1 dBV] = control when level below 30 dBV … 60 dBV

460 = 46 dBV (default)

slope

[ 15:0 ]

weak signal handling level range

60 … 300 [*0.1 dB] = control over level range of 6 dB … 30 dB

240 = 24 dB (default)

module

cmd

Set_Stereo_Noise

mode, start, slope

index

mode

[ 15:0 ]

timer selection

0 = off

1 = fast timer control

2 = slow timer control

3 = dual timer control; combined fast and slow timer control (default)

start

[ 15:0 ]

FM weak signal handling noise start

0 … 800 [*0.1 %] = control when noise above 0… 80% of USN detector

240 = 24% (default)

slope

[ 15:0 ]

FM weak signal handling noise range

100 … 1000 [*0.1 %] = control over range of 10… 100% of USN detector

200 = 20% (default)

Note: Suggested is 12% start and 15% slope for improved field performance.

module

cmd

Set_Stereo_Mph

mode, start, slope

index

mode

[ 15:0 ]

timer selection

0 = off

1 = fast timer control

2 = slow timer control

3 = dual timer control; combined fast and slow timer control (default)

start

[ 15:0 ]

FM weak signal handling multipath start

0 … 800 [*0.1 %] = control when mph above 0… 80% of WAM detector

240 = 24% (default)

slope

[ 15:0 ]

FM weak signal handling multipath range

100 … 1000 [*0.1 %] = control over range of 10… 100% of WAM detector

200 = 20% (default)

Note: Suggested is 18% start and 15% slope for improved field performance.

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module

cmd

Set_Stereo_Max

mode

index

mode

[ 15:0 ]

weak signal handling (dynamic control)

0 = off (for evaluation only)

1 = on; maximum dynamic control is 0 dB channel sep, i.e. mono (default)

module

cmd

Set_Stereo_Min

mode, limit

index

mode

[ 15:0 ]

strong signal handling

0 = off; channel separation is not limited (default)

1 = on; minimum control limit set by limit parameter

2 = forced mono

limit

[ 15:0 ]

Stereo fixed attenuation limit

60 … 400 [0.1* dB] = 6 … 40 dB Stereo minimum channel separation

400 = 40 dB (default)

Application example

FM_Set_Stereo_Min (1, 1, 200)

FM_Set_Stereo_Min (1, 2, 200)

FM 20 dB min. Stereo channel sep.

FM forced mono

I²C example (hex)

[ w 20 42 01 0001 00C8 ]

[ w 20 42 01 0002 00C8 ]

FM 20 dB min. Stereo channel sep.

FM forced mono

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3.16 FM / AM cmd 80 Set_Scaler

Fine tuning of sound amplitude between FM and AM analog radio sound.

module

32 / 33

FM / AM

cmd

Set_Scaler

gain

index

gain

[ 15:0 ] (signed)

channel gain

-120 … +60 [*0.1 dB] = -12 … +6 dB analog radio signal gain

0 = 0 dB (default)

Application example

FM_Set_Scaler (1, -30)

FM analog radio -3 dB gain scaling

I²C example (hex)

[ w 20 50 01 FFE2 ]

FM analog radio -3 dB gain scaling

Note: For fine tuning of FM and AM digital radio sound amplitude see 3.19 FM / AM cmd

83 Set_DR_Blend.

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3.17 FM cmd 81 Set_RDS

Available for TEA6852 and TEA6853 only.

Control of the FM Radio Data System demodulator and decoder system.

module

cmd

Set_RDS

mode, restart, interface

index

mode

[ 15:0 ]

RDS operation control

0 = off (RDS function disabled)

1 = decoder mode (default); output of RDS group data (block A, B, C, D)

from Get_RDS_Status/Get_RDS_Data; FM cmd = 130/131

2 = demodulator mode; output of raw demodulator data from

Get_RDS_Status/Get_RDS_Data; FM cmd = 130/131

restart

[ 15:0 ]

RDS decoder restart

0 = no control

1 = manual restart; start looking for new RDS signal immediately

2 = automatic restart after tuning (default); start looking for new RDS signal

after Preset, Search, Jump or Check tuning action (see FM cmd = 1)

interface

[ 15:0 ]

RDS pin signal functionality

0 = no pin interface (default)

2 = data-available status output; active low (GPIO feature ‘DAVN’)

4 = legacy 2-wire demodulator data and clock output (‘RDDA’ and ‘RDCL’)

Application example

FM_Set_RDS (1, 1, 2, 2)

Enable data-available status signal pin

I²C example (hex)

[ w 20 51 01 0001 0002 0002 ]

Enable data-available status signal pin

See 4.2 FM cmd 130 / 131 Get_RDS for information on RDS data read.

Note: RDS ‘DAVN’ signal (interface = 2) can be output at any of the available GPIO pins.

To receive raw demodulator data use of ‘demodulator mode’ is advised (mode = 2), the

2-wire output option (interface = 4) is available for legacy use only and not suggested for

new designs.

For pin signals a GPIO pin assignment is required; see 3.31 APPL cmd 3 Set_GPIO.

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3.18 FM / AM cmd 82 Set_QualityStatus

Enable and define interrupt use or status pin output for quality detector status flag.

module

32 / 33

FM / AM

cmd

Set_QualityStatus

mode, interface

index

mode

[ 15:0 ]

quality status flag after tuning ready

0 = no flag set after tuning (default)

[ 8:0 ] : 10 … 320 (* 0.1 ms) = set flag at 1 … 32 ms after tuning ready

[15] : 1 = set flag when FM AF_Update quality result is available

interface

[ 15:0 ]

quality status pin signal functionality

0 = no pin interface (default)

2 = quality status output; active low (‘QSI’)

Application example

FM_Set_QualityStatus (1, 32968, 2)

Set status pin at 20 ms or AFU result

I²C example (hex)

[ w 20 52 01 80C8 0002 ]

Set status pin at 20 ms or AFU result

For pin signals a GPIO pin assignment is required; see 3.31 APPL cmd 3 Set_GPIO.

Note: the mode parameter timer setting is rounded to 1 ms step size.

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3.19 FM / AM cmd 83 Set_DR_Blend

Available for TEA6853 only.

Control of digital radio blend functionality and digital radio scaler.

module

32 / 33

FM / AM

cmd

Set_DR_Blend

mode, in_time, out_time, gain

index

mode

[ 15:0 ]

blend pin use (DR_BL input)

0 = Standard pin use : DR Blend pin High = digital radio (default)

1 = Inverted pin use : DR Blend pin Low = digital radio

2 = No pin use; Force blend to digital radio

3 = No pin use; Force blend to analog radio

in_time

[ 15:0 ]

blend time from analog radio to digital radio

10 … 5000 [*0.1 ms] = 1 … 500 ms

50 = 5 ms (default)

out_time

[ 15:0 ]

blend time from digital radio to analog radio

10 … 5000 [*0.1 ms] = 1 … 500 ms

50 = 5 ms (default)

gain

[ 15:0 ] (signed)

digital radio channel gain

-180 … +60 [*0.1 dB] = -18 … +6 dB digital radio signal gain

0 = 0 dB (default)

Application example

FM_Set_DR_Blend (1, 2, 50, 50, -60)

force 5 ms blend to digital (-6 dB)

I²C example (hex)

[ w 20 53 01 0002 0032 0032 FFC4 ]

force 5 ms blend to digital (-6 dB)

Note: blend is functional only when digital radio is enabled (see 3.9 FM / AM cmd 30

Set_DigitalRadio) and radio is selected as an audio input source.

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3.20 FM / AM cmd 84 Set_DR_Options

For TEA6853 only.

Control of digital radio I/O functionality. Note: DR output is functional only when digital

radio is enabled (see 3.9 FM / AM cmd 30 Set_DigitalRadio).

module

32 / 33

FM / AM

cmd

Set_DR_Options

samplerate, mode, format

index

samplerate

[ 15:0 ]

baseband digital radio sample rate (DR_I2S output)

0 = automatic frequency selection based on tuning frequency (default)

6500 = 650 kHz (not for normal application use)

6750 = 675 kHz (not for normal application use)

mode

[ 15:0 ]

baseband digital radio pin mode

[ 15:8 ] =

BCK and WS pin mode

34 = standard operation, voltage output (default)

[ 7:0 ] =

Data pin(s) mode

2 = voltage output

4 = open drain (‘pull down’) (default)

format

[ 15:0 ]

baseband digital radio format select

16 = I2S 16 bit, ‘3 wire’ interface with single I/Q signal line (DR_I_DATA)

(fDR_BCK = 32 * sample rate)

4112 = I2S 16 bit, ‘4 wire’ interface with independent I and Q signal lines

(fDR_BCK = 16 * sample rate) (default)

Application example

FM_Set_DR_Options (1, 0)

FM_Set_DR_Options (1, 0, 8706, 16)

automatic DR sample rate selection

3-wire bus with voltage output data

I²C example (hex)

[ w 20 54 01 0000 ]

[ w 20 54 01 0000 2202 0010 ]

automatic DR sample rate selection

3-wire bus with voltage output data

Note: writing of parameters mode and format is optional

Note: Digital radio audio I/O is defined by AUDIO cmd 22 Set_Dig_IO (see 3.27); signal

= 32; IIS_SD_0.

Note: samplerate parameter setting changes are executed at the next tuning action.

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3.21 FM / AM cmd 85 Set_Specials

For TEA6852 and TEA6853 only.

Special radio options for evaluation and extended application use.

module

cmd

Set_Specials

ana_out

index

ana_out

[ 15:0 ]

audio output use

0 = normal operation (default)

1 = DAC_L : FM MPX wideband (DARC) signal / DAC_R : FM mono audio

2 = L : digital radio left channel / R : analog radio left channel

Application example

FM_Set_Specials (1, 1)

FM_Set_Specials (1, 2)

DARC/VICS output mode

digital radio time alignment test

I²C example (hex)

[ w 20 55 01 0001 ]

[ w 20 55 01 0002 ]

DARC/VICS output mode

digital radio time alignment test

Note: setting ana_out = 1 acts on the DAC output and is available for FM on TEA6852

and TEA6853 only. FM stereo signal remains available from the TEA6853 digital audio

I2S output (IIS_SD_1).

Note: setting ana_out = 2 acts on both the DAC and the digital audio I2S output. DAC

source selection or I2S output source selection override this digital radio test option.

Device version V102 note:

Setting ana_out = 2 requires an audio input selection of ‘radio’ and digital radio must be

disabled (or the blend signal in inactive state). Digital radio gain scaling is not included.

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3.22 AUDIO cmd 10 Set_Volume

Setting of audio volume.

module

AUDIO

cmd

Set_Volume

volume

index

volume

[ 15:0 ] (signed)

audio volume

-599 … +240 = -60 … +24 dB volume

0 = 0 dB (default)

Application example

AUDIO_Set_Volume (1, -100)

Set -10 dB volume gain

I²C example (hex)

[ w 30 0A 01 FF9C ]

Set -10 dB volume gain

Note: Depending on the source signal a volume setting over 0 dB may introduce signal

clipping.

Note: TEA685X volume settings down to volume = -40 dB are accurate within 1 dB, lower

volume shows increasing inaccuracy and step size. Setting -60 dB and lower sets mute.

3.23 AUDIO cmd 11 Set_Mute

Enable and disable of the audio mute.

module

AUDIO

cmd

Set_Mute

mode

index

mode

[ 15:0 ]

audio mute

0 = mute disabled

1 = mute active (default)

Application example

AUDIO_Set_Mute (1, 0)

Disable mute, allow audio output

I²C example (hex)

[ w 30 0B 01 0000 ]

Disable mute, allow audio output

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3.24 AUDIO cmd 12 Set_Input

Input select; selection of audio input source signal.

module

AUDIO

cmd

Set_Input

source

index

source

[ 15:0 ]

audio source select

0 = radio (default)

(analog radio or digital radio when enabled and available)

32 = I²S digital audio input IIS_SD_0 (TEA6853 only)

240 = sine wave generator

Application example

AUDIO_Set_Input (1, 240)

Select sine wave generator

I²C example (hex)

[ w 30 0C 01 00F0 ]

Select sine wave generator

3.25 AUDIO cmd 13 Set_Output_Source

Output select; selection of source signal for audio output.

module

AUDIO

cmd

Set_Output_Source

signal, source

index

signal

[ 15:0 ]

audio output

33 = I²S digital audio output IIS_SD_1 (TEA6853 only)

128 = DAC L/R output

source

[ 15:0 ]

source

4 = analog radio

32 = I²S digital audio input IIS_SD_0 (TEA6853 only)

224 = audio processor (default)

240 = sine wave generator

Application example

AUDIO_Set_Output_Source (1, 33, 04)

Select analog radio on I2S output

I²C example (hex)

[ w 30 0D 01 0080 00F0 ]

Select analog radio on I2S output

By default both the DAC output and the IIS_SD_1 output signal are taken from the audio

processor, i.e. with signal defined by AUDIO_Set_Input, _Set_Volume and _Set_Mute.

Set_Output_Source allows for an alternative output signal selection, directly connecting

to one of the available source signals without processing.

Note: Command Set_Output_Source requires a signal definition, i.e. include index = 1

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3.26 AUDIO cmd 21 Set_Ana_Out

Definition of analog output signals.

module

AUDIO

cmd

Set_Ana_Out

signal, mode

index

signal

[ 15:0 ]

analog audio output

128 = DAC L/R output

mode

[ 15:0 ]

output mode

0 = off (power down)

1 = output enabled (default)

Application example

AUDIO_Set_Ana_Out (1, 128, 0)

Disable DAC output

I²C example (hex)

[ w 30 15 01 0080 0000 ]

Disable DAC output

3.27 AUDIO cmd 22 Set_Dig_IO

Available for TEA6853 only.

Definition of digital input and output audio signals.

module

AUDIO

cmd

Set_Dig_IO

signal, mode, format, operation, samplerate

index

signal

[ 15:0 ]

digital audio input / output

32 = I²S digital audio IIS_SD_0 (input)

33 = I²S digital audio IIS_SD_1 (output)

mode

[ 15:0 ]

I/O mode

0 = off (default)

1 = input (only available for signal = 32)

2 = output (only available for signal = 33)

format

[ 15:0 ]

digital audio format select

16 = I²S 16 bits (fIIS_BCK = 32 * samplerate)

32 = I²S 32 bits (fIIS_BCK = 64 * samplerate) (default)

272 = lsb aligned 16 bit (fIIS_BCK = 64 * samplerate)

274 = lsb aligned 18 bit (fIIS_BCK = 64 * samplerate)

276 = lsb aligned 20 bit (fIIS_BCK = 64 * samplerate)

280 = lsb aligned 24 bit (fIIS_BCK = 64 * samplerate)

operation

[ 15:0 ]

operation mode

0 = slave mode; IIS_BCK and IIS_WS input defined by source (default)

256 = master mode; IIS_BCK and IIS_WS output defined by device

samplerate

audio sample rate select

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[ 15:0 ]

3200 = 32.0 kHz

4410 = 44.1 kHz (default)

4800 = 48.0 kHz

Application example

AUDIO_Set_Dig_IO (1, 33, 2, 32, 256, 4800)

Dig. output 32 bit I²S, master, 48 kHz.

I²C example (hex)

[ w 30 16 01 0021 0002 0020 0100 12C0 ]

Dig. output 32 bit I²S, master, 48 kHz.

Note: Command Set_Dig_IO requires a signal definition, i.e. include index = 1.

Note: A TEA685X digital audio signal always employs 16 active (msb) bits.

Note: In some cases settings of ‘operation’ or ‘samplerate’ are not independently

selectable, e.g. because of shared BCK and WS pins. The control setting is based on the

signal with lowest enumeration value in such a case.

Note: fIIS_BCK indicates the output frequency in master mode operation and the required

input frequency for slave mode operation of lsb aligned formatted output signals. Slave

mode operation of input signals and I²S formatted output signals also allows for other bit

clock rates of (16 … 32) * 2 * samplerate.

3.28 AUDIO cmd 23 Set_Input_Scaler

Available for TEA6853 only.

Fine tuning of sound amplitude of external sources. For each of the available external

sources a separate sound amplitude correction can be programmed for use when the

audio input is selected (see 3.24 AUDIO cmd 12 Set_Input).

module

AUDIO

cmd

Set_Input_Scaler

source, gain

index

source

[ 15:0 ]

audio source

32 = I²S digital audio input : IIS_SD_0

gain

[ 15:0 ] (signed)

external source channel gain

-120 … +60 [*0.1 dB] = -12 … +6 dB external source signal gain

0 = 0 dB (default)

Application example

AUDIO_Set_Input_Scaler (1, 32, -60)

Scale I²S input 0 by -6 dB

I²C example (hex)

[ w 30 17 01 0020 FFC4 ]

Scale I²S input 0 by -6 dB

Note: Command Set_Input_Scaler requires a source definition, i.e. include index = 1.

Note: Scaling of digital radio signal from IIS_SD_0 is defined by radio control FM / AM

cmd 83 Set_DR_Blend (see 3.19).

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3.29 AUDIO cmd 24 Set_WaveGen

Definition of the internal sine wave and offset generator signal.

The wave generator can be selected as an audio source (see 3.24 AUDIO cmd 12

Set_Input) and is intended for test purposes only.

module

AUDIO

cmd

Set_WaveGen

mode, offset, amplitude1, frequency1, amplitude2, frequency2

index

mode

[ 15:0 ]

mode

0 = wave signal off (default)

1 = wave 1 signal on Left channel

2 = wave 2 signal on Right channel

3 = wave 1 signal on Left channel and wave 2 signal on Right channel

5 = wave 1 signal on Left and Right channel

6 = wave 2 signal on Left and Right channel

7 = wave 1 + wave 2 signal on Left and Right channel

offset

[ 15:0 ]

DC offset

-32768 … + 32767 (* 1 LSB of 16 bit) = max negative … max positive.

0 = no offset (default)

amplitude1

[ 15:0 ] signed

wave 1 amplitude

300 … 0 (*0.1 dB) = -30 … 0 dB

200 = -20 dB (default)

frequency1

[ 15:0 ]

wave 1 frequency

10 … 20000 (*1 Hz) = 10 Hz … 20 kHz

400 = 400 Hz (default)

amplitude2

[ 15:0 ] signed

wave 2 amplitude

-300 … 0 (*0.1 dB) = -30 … 0 dB

200 = -20 dB (default)

frequency2

[ 15:0 ]

wave 2 frequency

10 … 20000 (*1 Hz) = 10 Hz … 20 kHz

1000 = 1 kHz (default)

Application example

AUDIO_Set_WaveGen (1, 0, 128, -200, 1000, -200, 1000))

Set offset to +128 LSB

AUDIO_Set_WaveGen (1, 5, 0, -100, 400, -200, 1000)

Set -10 dB, 400 Hz sine

I²C example (hex)

[ w 30 18 01 0000 0080 FF38 03E8 FF38 03E8 ]

[ w 30 18 01 0005 0000 FF9C 0190 FF38 03E8 ]

Set offset to +128 LSB

Set -10 dB, 400 Hz sine

Note: The reference for amplitude is digital full scale peak to peak (FSPP); i.e. 0 dB

represents a maximum undistorted sine wave signal when no offset is applied.

The DC offset is available on both Left and Right channel for all mode settings.

For mode = 7 the signals of wave 1 and wave 2 are added together, for undistorted

signal the combined amplitudes of wave 1 and wave 2 should not exceed 0 dB.

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3.30 APPL cmd 1 Set_OperationMode

Device power control.

module

APPL

cmd

Set_OperationMode

mode

index

mode

[ 15:0 ]

device operation mode

0 = normal operation

1 = radio standby mode (low-power mode without radio functionality)

(default)

Application example

APPL_Set_OperationMode (1, 1)

Put device in radio standby mode

I²C example (hex)

[ w 40 01 01 0001 ]

Put device in radio standby mode

Note: FM and AM commands are available during both operation modes allowing for

radio initialization of both FM and AM operation during radio standby mode.

Mode = ‘normal operation’ will return to the radio operation as defined before standby

(unless other selections were made during radio standby mode).

Alternatively a radio tuning action of Preset or Search (see 3.1 FM / AM cmd 1

Tune_To) will enable normal operation.

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3.31 APPL cmd 3 Set_GPIO

Define general purpose and application pin use.

module

APPL

cmd

Set_GPIO

pin, module, feature

index

[ 15:0 ]

GPIO number

0 … 2 = GPIO number

module

[ 15:0 ]

module

32 = FM

33 = AM

feature

[ 15:0 ]

feature

0 = no use (default) (FM / AM)

1 = general purpose input (FM / AM)

2 = general purpose output ‘0’ (FM / AM)

3 = general purpose output ‘1’ (FM / AM)

257 = output RDS (FM : see cmd 81 ‘DAVN’)

258 = output QSI (FM / AM : see cmd 82 ‘timer and AF_Update flag’)

259 = output QSI + RDS (active ‘low’ if ‘DAVN’ is active or ‘QSI’ is active)

260 = output RDDA (FM : see cmd 81 ‘RDDA, RDCL legacy option’)

261 = output RDCL (FM : see cmd 81 ‘RDDA, RDCL legacy option’)

262 = output AGC (FM : see cmd 11 ‘AGC step extension’)

Application example

APPL_Set_GPIO (1, 0, 32, 257)

APPL_Set_GPIO (1, 0, 33, 3)

Output ‘DAVN’ at GPIO 0 for FM

Output ‘high’ at GPIO 0 for AM

I²C example (hex)

[ w 40 03 01 0000 0020 0101 ]

[ w 40 03 01 0000 0021 0003 ]

Output ‘DAVN’ at GPIO 0 for FM

Output ‘high’ at GPIO 0 for AM

Feature settings 257 and 259 … 261 are available for TEA6852 and TEA6853 only.

Note: Command Set_GPIO requires a GPIO number definition, i.e. include index = 1.

Note: General purpose input use is limited to GPIO 0.

Note: A module setting of FM or AM is active for the appropriate radio mode only,

allowing independent feature definitions for FM and AM.

Note: Feature signals RDS, QSI and AGC are all ‘active low’.

Note: Definition and enabling of assigned features is available

from FM cmd 81 Set_RDS for ‘RDS’, ‘RDDA’ and ‘RDCL’ (see 3.17),

from FM / AM cmd 82 Set_QualityStatus for ‘QSI’ (see 3.18) and

from FM / AM cmd 11 Set_RFAG for ‘AGC’ (see 3.4).

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3.32 Idle state - APPL cmd 4 Set_ReferenceClock

This command is only available during ‘idle state’.

Several different frequencies can be used for the crystal oscillator. For proper functioning

the reference frequency must be entered before activation of the device, the command is

therefore available during ‘idle’ state only.

module

APPL

cmd

Set_ReferenceClock

frequency_msb, frequency_lsb, type

index

frequency_msb

[ 15:0 ]

MSB part of the reference clock frequency

[ 31:16 ]

frequency_lsb

[ 15:0 ]

LSB part of the reference clock frequency

[ 15:0 ]

frequency [*1 Hz]

(default = 9216000 for TEA6853, default = 4000000 for TEA6850/51/52)

type

[ 15:0 ]

clock type

0 = crystal oscillator operation (default)

Application example

APPL_Set_ReferenceClock (1, 61, 2304)

APPL_Set_ReferenceClock (1, 140, 40960)

APPL_Set_ReferenceClock (1, 183, 6912)

Set crystal reference 4 MHz

Set crystal reference 9.216 MHz

Set crystal reference 12 MHz

I²C example (hex)

[ w 40 04 01 003D 0900 0000 ]

[ w 40 04 01 008C A000 0000 ]

[ w 40 04 01 00B7 1B00 0000 ]

Set crystal reference 4 MHz

Set crystal reference 9.216 MHz

Set crystal reference 12 MHz

TEA685X supported frequencies: 4.000 MHz, 9.216 MHz, 12.000 MHz.

Note: Supported frequencies for digital radio use (TEA6853) are 9.216 and 12.000 MHz.

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3.33 Idle state - APPL cmd 5 Activate

This command is only available during ‘idle state’.

After the reference clock frequency has been defined the device must be put in active

state to allow for further initialization and control. After activation the device will be in

operational mode ‘radio standby’.

module

APPL

cmd

Activate

mode

index

mode

[ 15:0 ]

1 = goto ‘active’ state with operation mode of ‘radio standby’

Application example

APPL_Activate (1, 1)

Go from ‘idle state’ to ‘active state’.

I²C example (hex)

[ w 40 05 01 0001 ]

Go from ‘idle state’ to ‘active state’.

Note: Setting mode = 1 is the only available setting.

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4. Read commands

Read commands make certain information available for read. Reading consists of writing

a module, a command and an index value (i.e. similar to a write command) followed by a

read of the requested data.

The module defines the processing part that is addressed. Modules are integral

functional parts of the device that can be regarded sub-devices. Modules in the TEA685X

offering read data are 32 ‘FM’ for FM radio, 33 ‘AM’ for AM radio and 64 ‘APPL’ for

application and system information.

The command value defines the set of read data of interest.

The index value is present for future use to allow reading of certain specific data parts

out of the available command read data.

Device version V102 requires index = 1 to be used.

For evaluation purposes also index = 0 is supported.

The first actual read data starts from index = 1.

For evaluation purposes reading may also start from index = 0 in which case the first

data word contains a confirmation of the data following (see 5.7.1).

Read commands are only available in the device ‘active state’ operation modes (with the

exception of certain APPL read commands) and only available for enabled modules.

 idle state: valid read data from ‘APPL’ read of operation status,

device identification and I²C write checking.

 active state = radio standby: valid read data from ‘AUDIO’ and ‘APPL’ module.

 active state = FM: valid read data from ‘AM’, ‘AUDIO’ and ‘APPL’.

 active state = AM: valid read data from ‘FM’, ‘AUDIO’ and ‘APPL’.

For detailed information on the I²C protocol for read commands see 5.3 Read control.

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4.1 FM / AM cmd 128 / 129 Get_Quality

Read status of the tuner reception quality information

Get_Quality_Status will read status and possibly data with the status and any frozen

data (like e.g. available after AF_Update tuning) remaining unchanged.

Get_Quality_Status is intended for status read only (i.e. status polling) but data may be

sampled when desired.

Get_Quality_Data will read status and data with the status and any frozen data (like e.g.

available after AF_Update tuning) released after read, allowing for new data updates.

Get_Quality_Data is intended for data reading with status informing about data content

and validity.

module

32 / 33

FM / AM

cmd

128

129

Get_Quality_Status

Get_Quality_Data

FM : | status, level, usn, wam, offset, bandwidth, modulation

AM : | status, level, -, -, offset, bandwidth, modulation

index

status

[ 15:0 ]

quality detector status

[15] =

AF_update flag

0 = continuous quality data with time stamp

1 = AF_Update sampled data

[14:10] =

reserved

[9:0] =

quality time stamp

0 = tuning is in progress, no quality data available

1 … 320 (* 0.1 ms) = 0.1 … 32 ms after tuning,

quality data available, reliability depending on time stamp

1000 = > 32 ms after tuning

quality data continuously updated

level

[ 15:0 ] (signed)

level detector result

-200 … 1200 (0.1 * dBV) = -20 … 120 dBV RF input level

actual range and accuracy is limited by noise and agc

usn

[ 15:0 ]

noise detector

ultrasonic noise detector

0 … 1000 (*0.1 %) = 0 … 100% relative usn detector result

wam

[ 15:0 ]

FM multipath detector

‘wideband-AM’ multipath detector

0 … 1000 (*0.1 %) = 0 … 100% relative wam detector result

offset

[ 15:0 ] (signed)

radio frequency offset

-1200 … 1200 (*0.1 kHz) = -120 kHz … 120 kHz radio frequency error

actual range and accuracy is limited by noise and bandwidth

bandwidth

[ 15:0 ]

IF bandwidth

970 … 3110 [*0.1 kHz] = IF bandwidth 97 … 311 kHz; narrow … wide

30 … 80 [*0.1 kHz] = IF bandwidth 3 … 8 kHz; narrow … wide

modulation

[ 15:0 ]

modulation detector

0 … 1000 [*0.1 %] = 0 … 100% modulation = 0 … 75 kHz FM dev.

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1000 … 2000 [*0.1 %] = 100% … 200% over-modulation range

(modulation results are an approximate indication of actual FM dev.)

0 … 1000 [*0.1 %] = 0 … 100% AM modulation index

1000 … 2000 [*0.1 %] = 100% … 200% peak modulation range

(peak modulation results vary depending on the modulation setup)

Application example

FM_Get_Quality_Status (1, (status))

FM_Get_Quality_Data (1, (status .. modulation))

Poll status

Read status and all available data

I²C example (hex)

[ w 20 80 01 [ r 0014]

[ w 20 81 01 [ r ???? ???? … ???? ]

Poll status (2 ms after tuning)

Read status and all available data

Note: A tuning action will reset the status information and release the frozen AF_Update

sampled quality data should the AF data not have been read before.

The status quality time stamp starts updating as soon as tuning is established and new

sampled data becomes available for an AF_Update tuning action (see 3.1 FM / AM cmd

1 Tune_To : mode = 3) and new continuous data becomes available for Preset, Search,

Jump or Check tuning actions (mode = 1, 2, 4 or 5.)

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4.2 FM cmd 130 / 131 Get_RDS

Available for TEA6852 and TEA6853 only.

Poll status (and data) or read status and data of the FM RDS demodulator and decoder.

Get_RDS_Status returns status (and data). The status and stored data (when complete

data is available) will remain unchanged. Get_RDS_Status use is suggested for status

read only (i.e. status polling) but data can be sampled when desired.

Get_RDS_Data returns status and data. The status and stored data (when complete

data is available) will be released allowing data updating. Get_RDS_Data is intended for

data reading including status information.

4.2.1 RDS read modes

The radio data system feature of FM RDS and RBDS data reception can operate in two

distinctive modes as defined by the FM cmd 81 Set_RDS mode parameter.

The mode setting defines the type of data available from the Get_RDS_Status and

Get_RDS_Data commands and the timing associated with ‘data-available’ signaling.

Decoder mode is the default mode (mode = 1) where the received RDS data is

additionally decoded and output in RDS group format as defined by the RDS standard.

Error correction is executed and error detection allows for discriminating between data

results judged reliable, less reliable and not reliable by the RDS error detection scheme.

The optional demodulator mode (mode = 2) allows for output of ‘raw’ RDS bit data

taken directly after demodulation. The data is output in 32 bit chunks for easy read-out.

Additional data processing is required in the connected C for RDS synchronization,

decoding and error handling.

In both modes RDS data is output through an internal data buffer capable of storing

multiple sets of output data for relaxed requirements on read timing.

4.2.2 Read data definition for RDS decoder mode

FM cmd 81 Set_RDS; mode = 1.

module

cmd

130

131

Get_RDS_Status

Get_RDS_Data

| status, A_block, B_block, C_block, D_block, dec_error

index

status

[ 15:0 ]

FM RDS reception status

[15] =

data available flag

0 = no data available (incomplete group or no first PI)

1 = RDS group data or first PI data available

[14] =

data loss flag

0 = no data loss

1 = previous data was not read, replaced by newer data

[13] =

data available type

0 = group data; continuous operation

1 = first PI data; data with PI code following decoder sync.

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[12] =

group type

0 = type A; A-B-C-D group (with PI code in block A)

1 = type B; A-B-C’-D group (with PI code in block A and C’)

[11:10] =

reserved

[9] =

synchronization status

0 = RDS decoder not synchronized; no RDS data found

1 = RDS decoder synchronized; RDS data reception active

[8: 0] =

reserved

A_block

[ 15:0 ]

A block data

B_block

[ 15:0 ]

B block data

C_block

[ 15:0 ]

C block data

D_block

[ 15:0 ]

D block data

dec_error

[ 15:0 ]

error code (determined by decoder)

[15:14] =

A block error code

[13:12] =

B block error code

[11:10] =

C block error code

[9:8] =

D block error code

0 : no error; block data was received with matching data and syndrome

1 : small error; possible 1 bit reception error detected; data is corrected

2 : large error; theoretical correctable error detected; data is corrected

3 : uncorrectable error; no data correction possible

[7:0] =

reserved

Application example

FM_Get_RDS_Status (1, (status))

FM_Get_RDS_Data (1, (status … dec_error))

Poll status

Read status and all available data

I²C example

[ w 20 82 01 [ r 8200 ]

[ w 20 83 01 [ r ???? ???? … ???? ]

Poll status (RDS available, sync’d)

Read status and all available data

4.2.3 RDS read operation for decoder mode

The availability of RDS decoder data is signaled by the status bit 15.

If new and complete information is available this is signaled by status[15] = 1 and RDS

group status and data is stored for C read. RDS status and data can be read from

commands Get_RDS_Status and Get_RDS_Data equally but only the command

Get_RDS_Data clears the information from the internal storage buffer.

Optional an interrupt (‘DAVN’) can be generated at the occurrence of RDS data

available, see 3.17 FM cmd 81 Set_RDS to enable this option (interface = 2) and 3.31

APPL cmd 3 Set_GPIO for output pin selection of the data available interrupt signal.

The interrupt is set and released at the same conditions as the status[15] bit.

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The RDS system includes an RDS data buffer capable of storing up to 22 RDS data sets

of group data allowing for a delayed read action on the data available signaling.

RDS data can be read from the device using Get_RDS_Data repeatedly with the data

available signal remaining active until the RDS data storage buffer is empty.

In the unlikely case that available data was not read in time causing the RDS data buffer

to become full and new group data is available then the oldest data will be overwritten by

new data. This loss of buffered data is indicated by the status bit 14 = 1.

Depending on the desired setup of the C control software three ways of operation are

suggested for the reading of RDS decoder data.

1. Non synchronized operation (data polling):

Repeated Get_RDS_Data read of RDS status and data.

When status[15] = 1 then the RDS data is used, otherwise the data is ignored.

To avoid data loss a single Get_RDS_Data read should be executed at least

every 87 ms. or a burst of up to 22 Get_RDS_Data reads should be executed at

least every 1.90 sec. taking advantage of the RDS data buffer.

2. Status synchronized operation (status polling):

Repeated Get_RDS_Status read of status[15].

When status[15] = 1 (i.e. data available) is found perform a Get_RDS_Data read

of RDS status and data.

To avoid data loss Get_RDS_Status the polling should be executed at least

every 87 ms. allowing for inclusion of a single Get_RDS_Data read or at least

every 1.90 sec. allowing for inclusion of up to 22 Get_RDS_Data reads taking

advantage of the RDS data buffer.

3. Interrupt synchronized operation (interrupt pin):

Setting of ‘DAVN’ interrupt output option and GPIO pin connected to C.

When interrupt active is found (pin low) perform a Get_RDS_Data read of RDS

status and data.

To avoid data loss a single Get_RDS_Data read should be performed within

87 ms. after interrupt or a burst of up to 22 Get_RDS_Data reads should be

executed within 1.92 sec. after interrupt taking advantage of the RDS data buffer.

C0D0A1B1C1D1A2B2C2D2A3B3C3D3A4B4

‘DAVN’ (optional),

e.g. GPIO 0. Data_av. (PI) Data_av. (1)

Get_RDS

Get_RDS_Data

Data available = 0

Data loss = 0

Data type = 0

X X X X

Get_RDS_Data

Data available = 1

Data loss = 0

Data type = 1 (first-PI)

A1 X X X

Get_RDS_Data

Data available = 1

Data loss = 0

Data type = 0

A1 B1 C1 D1

Get_RDS_Data

Data available = 0

Data loss = 0

Data type = 0

A2 B2 C2 X

Data_av. (2)

Get_RDS_Status

Data available = 1

Data loss = 0

Data type = 0

Get_RDS_Data

Data available = 1

Data loss = 0

Data type = 0

A2 B2 C2 D2

Get_RDS_Data

Data available = 1

Data loss = 0

Data type = 0

A3 B3 C3 D3

(2, 3)*

C4D4

(3)

* RDS buffer stores max. 22 sets

of ‘first-PI’ and RDS group data

87.57 ms

Fig 2. Example of RDS decoder status and data by I²C bus read and optional GPIO ‘DAVN’ interrupt use.

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4.2.4 Read data definition for RDS demodulator mode

FM cmd 81 Set_RDS; mode = 2.

module

cmd

130

131

Get_RDS_Status

Get_RDS_Data

| status, raw_data_high, raw_data_low

index

status

[ 15:0 ]

FM RDS reception status

[15] = 0 : no data available

[15] = 1 : 32 bit of raw demodulator data available

[14] = 0 : no data loss

[14] = 1 : previous data was not read, replaced by newer data

[13 … 0] = reserved

raw_data_high

[ 15:0 ]

MSB part of the 32 bit raw demodulator data ([31:16])

raw_data_low

[ 15:0 ]

LSB part of the 32 bit raw demodulator data ([15:0]).

Application example

FM_Get_RDS_Status (1, (status))

FM_Get_RDS_Data (1, (status, raw_data))

Poll status

Read status and available data

I²C example

[ w 20 82 01 [ r 8000 ]

[ w 20 83 01 [ r ???? ???? ???? ]

Poll status (RDS raw data available)

Read status and available data

4.2.5 RDS read for demodulator mode operation

Except for the different data content and associated timings the read operation for

demodulator mode equals the operation for decoder mode.

The availability of 32 bit of RDS demodulator data is signaled by the status bit.

If new and complete information is available this is signaled by status[15] = 1 and 32 bit

of raw RDS data is stored for C read. RDS status and data can be read from commands

Get_RDS_Status and Get_RDS_Data equally but only the command Get_RDS_Data

clears the information from the internal storage buffer.

Optional an interrupt (‘DAVN’) can be generated at the occurrence of RDS data

available, see 3.17 FM cmd 81 Set_RDS to enable this option (interface = 2) and 3.31

APPL cmd 3 Set_GPIO for output pin selection of the data available interrupt signal.

The interrupt is set and released at the same conditions as the status[15] bit.

The RDS system includes an RDS data buffer capable of storing up to 50 RDS data sets

of 32 bit raw data allowing for a delayed read action on the data available signaling.

RDS data can be read from the device using Get_RDS_Data repeatedly with the data

available signal remaining active until the RDS data storage buffer is empty.

In the unlikely case that the controlling C has not read the available data in time causing

the RDS data buffer to become full and again 32 bits of new data are available then the

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oldest data will be overwritten by the new data. This loss of buffered data is indicated by

the status bit 14 = 1.

Depending on the desired setup of the C control software three ways of operation are

suggested for the reading of RDS demodulator data.

1. Non synchronized operation (data polling):

Repeated Get_RDS_Data read of RDS status and data.

If status[15] = 1 then the RDS data is used, otherwise the data is ignored.

To avoid data loss a single Get_RDS_Data read should be executed at least

every 26 ms. or a burst of up to 50 Get_RDS_Data reads should be executed at

least every 1.34 sec. taking advantage of the RDS data buffer.

2. Status synchronized operation (status polling):

Repeated Get_RDS_Status read of status[15].

When status[15] = 1 (i.e. data available) is found perform a Get_RDS_Data read

of RDS status and data.

To avoid data loss Get_RDS_Status the polling should be executed at least

every 26 ms. allowing for inclusion of a single Get_RDS_Data read or at least

every 1.34 sec. allowing for inclusion of up to 50 Get_RDS_Data reads taking

advantage of the RDS data buffer.

3. Interrupt synchronized operation (interrupt pin):

Setting of ‘DAVN’ interrupt output option and GPIO pin connected to C.

When interrupt active is found (pin low) perform a Get_RDS_Data read of RDS

status and data.

To avoid data loss a single Get_RDS_Data read should be performed within

26 ms. after interrupt or a burst of up to 50 Get_RDS_Data reads should be

executed within 1.34 sec. after interrupt taking advantage of the RDS data buffer.

‘DAVN’ (optional),

e.g. GPIO 0 Data_av. (1)

Get_RDS_Status

/ Get_RDS_Data

Get_RDS_Data

Data available = 0

Data loss = 0

(Data invalid)

Get_RDS_Data

Data available = 1

Data loss = 0

32 bit data (1)

Get_RDS_Data

Data available = 0

Data loss = 0

(Data invalid)

Data_av. (2)

Get_RDS_Status

Data available = 1

Data loss = 0

Get_RDS_Data

Data available = 1

Data loss = 0

32 bit data (2)

Get_RDS_Data

Data available = 1

Data loss = 0

32 bit data (3)

(2, 3)* (3)

* RDS buffer stores max. 50 sets

of 32 bit raw data

Set_RDS mode = 2 (demodulator mode)

26.94 ms

Fig 3. Example of RDS demodulator status and data by I²C bus read and optional GPIO ‘DAVN’ interrupt use.

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4.3 FM / AM cmd 132 Get_AGC

Read attenuation setting of the RF AGC. The overall antenna signal attenuation is found

by addition of the input_att and feedback_att value.

module

32 / 33

FM / AM

cmd

132

Get_AGC

| input_att, feedback_att

index

input_att

[ 15:0 ]

RF AGC input attenuation

0 … 360 (0.1* dB) = 0 … 36 dB attenuation

0 … 420 (0.1* dB) = 0 … 42 dB attenuation

feedback_att

[ 15:0 ]

RF AGC feedback attenuation

0 … 60 (0.1* dB) = 0 … 6 dB attenuation

0 … 180 (0.1* dB) = 0 … 18 dB attenuation

Application example

FM_Get_AGC (1, (input_att, feedback_att))

Read AGC attenuation settings

I²C example

[ w 20 84 01 [ r 00B4 003C ]

Read AGC attenuation settings

(18 dB + 6 dB RF attenuation)

Note: The TEA685X RF AGC employs 6 dB step size, i.e. read values of 0, 60, 120…

4.4 FM / AM cmd 133 Get_Signal_Status

Read information about the received radio signal.

module

32 / 33

FM / AM

cmd

133

Get_Signal_Status

| status

index

status

[ 15:0 ]

Radio signal information

[15] = 0 : mono signal

[15] = 1 : FM stereo signal (stereo pilot detected)

[14] = 0 : analog signal

[14] = 1 : digital signal (blend input activated by digital processor or control)

(TEA6853 only)

Application example

FM_Get_Signal_Status (1, (status))

Read availability of stereo and digital

I²C example

[ w 20 85 01 [ r 8000 ]

Read availability of stereo and digital

(stereo signal found)

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4.5 FM / AM cmd 134 Get_Processing_Status

Read information about the internal processing status (weak signal handling).

This information is intended for evaluation use only.

module

32/33

FM / AM

cmd

134

Get_Processing_Status

| softmute, highcut

index

softmute

[ 15:0 ]

Softmute control state

0 … 1000 (*0.1%) = 0 % minimum … 100 % max. softmute attenuation

highcut

[ 15:0 ]

Highcut control state

0 … 1000 (*0.1%) = 0 % minimum … 100 % max. audio freq. limitation

stereo

[ 15:0 ]

FM Stereo blend control state

0 … 1000 (*0.1%) = 0 % minimum … 100 % max. stereo att. (= mono)

Application example

FM_Get_Processing_Status (1, (softmute, …))

Read weak signal processing status

I²C example

[ w 20 86 01 [ r 0000 019A 03B6 ]

Read weak signal processing status

(softm 0%, highcut 41%, stereo 95%)

Note: 0 % equals minimum control, as defined by the weak signal ‘_Min’ setting.

100 % equals maximum control, as defined by the weak signal ‘_Max’ setting.

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4.6 FM / AM cmd 135 Get_Interface_Status

Available for TEA6853 only.

Information about radio I/O functionality; DR I²S output.

module

32 / 33

FM / AM

cmd

135

Get_Interface_Status

| samplerate

index

samplerate

[ 15:0 ]

Baseband digital radio sample rate (DR_I2S output)

0 = interface disabled (digital radio disabled)

6500 = 650 kHz

6750 = 675 kHz

Application example

FM_Get_Interface_Status (1, (samplerate))

automatic DR sample rate selection

I²C example (hex)

[ w 20 87 01 [ r 01A5 ]

automatic DR sample rate selection

(675 kHz)

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4.7 APPL cmd 128 Get_Operation_Status

This read command is also available during ‘boot state’ and during ‘idle state’.

Read information about the operation state.

module

APPL

cmd

128

Get_Operation_Status

| status

index

status

[ 15:0 ]

Device operation status

0 = boot state; no command support

1 = idle state

2 = active state; radio standby

3 = active state; FM

4 = active state; AM

Application example

APPL_Get_Operation_Status (1, (status))

Read operation status

I²C example

[ w 40 80 01 [ r 0003 ]

Read operation status

(active state FM)

Note: The value 0 indicates boot state (reset state after power-on, power dip or reference

frequency disruption). Actually all get commands will return 0 values during boot state

and no command support is available.

See chapter 6 Device start-up on start-up device control and initialization.

4.8 APPL cmd 129 Get_GPIO_Status

Read information about the input state of designated input pins (see 3.31 APPL cmd 3

Set_GPIO).

module

APPL

cmd

129

Get_GPIO_Status

| status

index

status

[ 15:0 ]

input state (when assigned for input use)

[2] = input state of GPIO_2 (no input use suggested for TEA685X)

[1] = input state of GPIO_1 (no input use suggested for TEA685X)

[0] = input state of GPIO_0 (0 = low, 1 = high)

Application example

APPL_Get_GPIO_Status (1, (status))

Read input state of GPIO input pins

I²C example

[ w 40 81 01 [ r 0001 ]

Read input state of GPIO input pins

(input GPIO_0 high)

Note: Because of the TEA685X designated input use of GPIO_1 and GPIO_2 during

power-up only GPIO_0 is suggested for application as a general purpose input.

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4.9 APPL cmd 130 Get_Identification

This read command is also available during ‘idle state’.

Read information about the device type and variant.

module

APPL

cmd

130

Get_Identification

| device, hw_version, sw_version

index

device

[ 15:0 ]

device type and variant

[ 15:8 ]

type identifier

7 = TEA685X ‘Tiger-2’ series

[ 7:0 ]

variant identifier

7 = TEA6850 ‘Tiger-2’

5 = TEA6851 ‘Tiger-2 Premium’

4 = TEA6852 ‘Tiger-2 Premium RDS’

6 = TEA6853 ‘Tiger-2 Digital’

hw_version

[ 15:0 ]

hardware version

[ 15:8 ]

major number

[ 7:0 ]

minor number

sw_version

[ 15:0 ]

firmware version

[ 15:8 ]

major number

2 = ‘2’

[ 7:0 ]

minor number

0 = ‘.00’

Application example

APPL_Get_Identification (1, (device..))

Read device identification

I²C example

[ w 40 82 01 [ r 0704 0100 0200 ]

(TEA6853, hw 1.0, sw 2.00)

Note: The type number version designation ‘/V102’ is derived from the major hw_version

and the major sw_version number.

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4.10 APPL cmd 131 Get_LastWrite

This read command is also available during ‘idle state’.

Read data content of the last write transmission.

module

APPL

cmd

131

Get_LastWrite

| size/module, cmd/ index, parameter1, parameter2, parameter3, …

index

size/module

[ 15:0 ]

transmission size (number of parameters) and module number

[ 15:8 ] = 0 … 6 : number of parameters of the last write transmission

[ 7:0 ] = 0 … 255 : module value of the last write transmission

cmd/index

[ 15:0 ]

command byte number and index byte value

[ 15:8 ] = 0 … 255 : cmd value of the last write transmission

[ 7:0 ] = 0 ... 255 : index value of the last write transmission

parameter1

[ 15:0 ]

first parameter

0 … 65535 = value of the first parameter (when available)

parameter2

[ 15:0 ]

second parameter

0 … 65535 = value of the second parameter (when available)

parameter3

[ 15:0 ]

third parameter

0 … 65535 = value of the third parameter (when available)

parameter4

[ 15:0 ]

fourth parameter

0 … 65535 = value of the fourth parameter (when available)

parameter5

[ 15:0 ]

fifth parameter

0 … 65535 = value of the fifth parameter (when available)

Application example

APPL_Get_LastWrite (1, (size...parameter))

Read back last write transmission

I²C example

[ w 40 83 01 [ r 0121 1E01 0001 0000…0000 ]

Read back last write transmission

(AM_Set_DigitalRadio = ‘on’)

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5. I²C bus protocol

5.1 I²C protocol

TEA685X control parameters are 16 bit wide. The I²C bus native unit is the byte, multi-

byte values like 16 bit parameters are transmitted MSB byte first.

With external application of a pull down resistor at GPIO_2 (10 kto ground) the I²C

device address for TEA685X is C8h for write and C9h for read operations.

Alternatively application of a pull-up resistor (10 kto Vdd) at pin GPIO_2 allows for use

of device address CAh for write and CBh for read instead.

Note: GPIO_1 must be pulled low (10 k



to ground) during power-on to ensure proper

operation.

Note: GPIO_2 must be pulled low or high (10 k



) during power-on and activation for a

defined I2C address. Pin open is not a defined state.

5.2 Write control

Standard write transmissions to the TEA685X consist of an I²C start condition and an 8

bit hardware device address for write as depicted by the I²C standard.

Next an 8 bit module identifier is transmitted that can be regarded as a kind of internal

device address for function blocks like FM radio, AM radio, audio and system.

Control is then indicated by an 8 bit command identifier and an 8 bit parameter index

allows for sub-addressing within the command parameter space, followed by one or

more 16 bit parameters for actual control.

The end of transmission is indicated by an I²C standard stop condition. Because the I²C

bus format includes this implicit stop condition no ‘size’ indication is needed as may be

required by certain other bus formats.

Note: Device version V102 only supports the use of index = 1 and all parameters

described in this user manual need to be transmitted.

In Fig 4 examples of these transmissions are shown.

ADDR w

ADDR w module Set cmd index = 1

ADDR w

Write all cmd parameters

110010x 0

parameter 1

module Set cmd index = i parameter i

parameter n

Write indexed parameter(s)

note : not supported by /V102

module Set cmd index = i parameter i parameter i+1

2 n-1

ADDR w module Set cmd index = 1 parameter 1 parameter 2 Write only first parameters

[ 7:0 ] [ 7:0 ] [ 7:0 ] [ 15:8 ] [ 7:0 ] [ 15:8 ] [ 7:0 ]

‘ADDR w’ is the I²C device address for write (C8h or CAh) depending on the address select pin application.

Fig 4. Examples of I²C write control; set command

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TEA685X uses only a fraction of the possible number of modules, commands and

parameters. The choice for a 24 bit wide parameter address space is for future

extendibility.

Writing to disabled modules is supported and will store the data for later use. Enabling of

modules (where applicable) is supported by specific module commands which may imply

automatic disabling of other module(s) as e.g. is the case when switching between FM

and AM radio module operation.

5.3 Read control

Standard reading from the TEA685X consists of a write transmission for definition of the

requested data followed by the actual read transmission for obtaining the data.

Note: this is normal practice because the I²C specification does not support read

addressing within a read transmission.

Read data is 16 bit wide (or multiples of 16 bit) transmitted with the MSB byte first.

For reading of received data or status information special ‘get’ commands are defined.

For future extendibility and reading of data parts within larger data blocks an index

setting is included similar to the write definition.

Index = 1 is the standard case with read data starting from the first data word.

Note: Device version V102 only supports the use of index = 1, it is allowed however to

read less than the number of data words described in this user manual.

For evaluation purposes index = 0 is supported also (see 5.7.1).

ADDR w module Get cmd index = 1 Read all cmd data

110010x 0

Read indexed data

note : not supported by /V102

ADDR r data 1 data n

ADDR w module Get cmd index = i ADDR r data i

ADDR w module Get cmd index = i ADDR r data i data i+1

110010x 1

ADDR w module Get cmd index = 1 ADDR r data 1 data 2 Read only first data

[ 7:0 ] [ 7:0 ] [ 7:0 ] [ 15:8 ] [ 7:0 ] [ 15:8 ] [ 7:0 ]

‘ADDR r’ is the I²C device address for read (C9h or CBh) depending on the address select pin application.

Fig 5. Examples of I²C read control; get command

Certain timing requirements exist for TEA685X read control; see chapter 5.6 for details.

TEA685X ‘Get’ commands as published in this user manual are without parameter use.

For future extensions the protocol however allows for ‘Get’ commands with parameters.

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0 1

ADDR w module Get cmd index = i parameter 1 parameter m ADDR r data i data n

Fig 6. Example of a possible get command with parameter(s)

5.4 I²C repeated start

The I²C specification allows the joining of multiple I²C transmissions by use of I²C

‘repeated start’. This way of operation ensures the set of I²C transmissions will not be

interrupted by another transmission from a second microcontroller on the bus (multi-

master setup).

TEA685X supports the use of I²C ‘repeated start’ without restriction. This means

TEA685X handles I²C transmissions separated by an I²C stop and start condition in

exactly the same way as I²C transmissions ‘joined’ by an I²C repeated start condition.

ADDR w module cmd index A2 r data 1 data n

ADDR w module cmd index ADDR w module cmd index

Fig 7. Examples of I²C transmissions with repeated start

5.5 Polling device presence

Checking for presence of the device on the I²C bus without any data transfer is possible

by only writing of the device write address. The I²C standard acknowledge will signal

device presence.

ADDR w Device presence check

Fig 8. Example of testing device presence.

5.6 I²C read timing requirements

The TEA685X supports I²C clock speeds up to 400 kHz in accordance with the I²C ‘fast

mode’ specification. TEA685X write operations require no special attention, read

operations however require a minimum of 50 us time to guarantee read data setup.

The 50 us timing requirement is measured from the write transmission finish to the first

read data; i.e. from the I²C ‘stop’ or ‘repeated start’ condition ( = SDA edge) to the end of

the device address ‘acknowledge’ ( = falling edge of the 9th SCL clock pulse)

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For 400 kHz bus operation the special control option of index = 0 offers a simple solution

to meet this read timing requirement:

A setting of index = 0 will add an additional read word in front of the standard read data.

This read word allows for special transmission evaluation options (see chapter 5.7

Special control ) but can be ignored for normal operation. For 400 kHz operation the

special index 0 read word ensures a proper setup timing for the required read data of

index = 1 and higher. The special index 0 word itself however must be ignored.

ADDR w module Get cmd index = 0 400 kHz I2C bus

Ensured data setup for

read data 1 and higher

ADDR r data 0 to be ignored data 1 data n

ADDR w module Get cmd index = 0 ADDR r data 0 to be ignored data 1 data n

Fig 9. Example of I²C read control with guaranteed 400 kHz operation; get command index = 0

Use of index = 0 is probably the most convenient way to ensure proper read data settling

for I2C fast mode bus operation.

Three alternative operation means are depicted below that may be of use, e.g. when

reliable index = 0 read data is desired at high speed:

Alternative 1 : Maximum I²C bus speed limit.

A bus speed setting of 184 kHz or lower will guarantee the required data setup time.

Microcontrollers generally do not employ the ‘fast mode’ worst-case timing for the full

device address transmission meaning a microcontroller ‘200 kHz’ bus speed setting will

ensure safe read operation in many cases.

Alternative 2 : 400 kHz I²C bus speed with microcontroller delay.

Use of separate transmissions and a timed delay of 27 us or higher between the write

transmission ‘stop’ condition and the read transmission ‘start’ will guarantee the required

read data setup time.

Alternative 3 : 400 kHz I²C bus speed with dual ‘repeated-start’.

In case use of ‘repeated-start’ is desired as well as 400 kHz bus operation a ‘dummy’

write address transmission can be inserted between the functional write and read

transmission.

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ADDR w module cmd index ADDR r data 1

ADDR w mod cmd index ADDR r data 1 data n

data n

ADDR w mod cmd index ADDR w ADDR r data 1 data n

>= 27 us

>= 50 us

<< 200 kHz

400 kHz Stop – Start with delay

400 kHz Repeated-start with dummy

Fig 10. Examples of alternative I²C read control with guaranteed read data setup

5.7 Special control

To support evaluation and debugging of the device control special control options are

available.

5.7.1 Set command confirmation; special evaluation read control

For standard operation data reading is limited to status and information read data

requested by a preceding ‘get’ command.

To this purpose TEA685X puts the requested data in its output registers after reception

and evaluation of a valid ‘get’ command. TEA685X however also places a data word in

its output registers after reception of a ‘set’ command, either offering confirmation of the

command reception by returning the module and cmd value or delivering an error code in

case of an invalid control. This data field is not intended for generic use but can be read

during control software development for debugging purposes.

Condition : Read data word :

Valid command module / cmd

No command received 00 00h

Invalid command value FF FFh

Invalid module value FF FEh

Invalid index value FF FDh (note: currently only index = 0 or 1 is permitted)

Invalid parameter value FF FCh (note: not available in general)

Invalid state FF FAh

Example of confirmation read

after set-command

ADDR w module Set cmd index = i parameter i parameter n ADDR r module Set cmd

110010x 0 110010x 1

Fig 11. Example of write command with evaluation data read

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5.7.2 Get command confirmation; special evaluation read control

For standard operation read command data reading is limited to application status and

information data.

However similar to write commands also read commands can optionally deliver

confirmation of the read command reception or an error in case of invalid control.

To this purpose use of index = 0 with a ‘get’ command has a special meaning where as

the first data word the module and cmd value are returned or an error code in case of

invalid control.

Condition : Read data word :

Get command data available module / cmd

No command received 00 00h

Get command data not available yet FF F8h*

Invalid command value FF FFh

Invalid module value FF FEh

Invalid index value FF FDh (currently only 0 and 1 are allowed)

Invalid state FF FAh (command exists but not supported now)

* All TEA685X read commands show ‘instant’ data delivery, therefore error value FF F8h

shall never be found as long as the read timing requirement of 50 us is met (see 5.6).

In case of not meeting the read timing requirement also error value 00 00h may be found

occasionally.

ADDR w module Get cmd index = 0 valid get cmd

ADDR r module Get cmd data 1 data n

ADDR w module Get cmd index = 0 ADDR r FFh FFh undefined undefined unknown get cmd

Fig 12. Examples of I²C read control with confirmation; get command index = 0

Note: The 00 00h and FF FFh … FF F8h error codes are also returned as the first data

word in case of index = 1 use but may be confused with standard expected return data.

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6. Device start-up

6.1 Introduction

The TEA685X is powered by a single supply voltage. No supply power-up requirements

are known to exist.

After power-on the device is found in a pre-defined reset state (boot state). A sequence

of control transmissions will bring the device into idle state followed by active state to

realize the desired user operation mode, function and performance.

Write required initialization

Start

Power on reset

Set application reference clock

Operation status = 1

Operation status = 0

radio standby

FM standby

AM standby

Activate

Initialize and control any module FM, AM, Audio, Application

Operation status = 2

Idle state

Operation status = 3 / 4

Read from enabled modules Audio, Application

Audio

Appl.

Active state

Boot state

Appl.

Enable (Tune To) FM / AM radio

Initialize and control any module FM, AM, Audio, Application

Read from enabled modules FM / AM, Audio, Application

Fig 13. Block diagram of device start-up control sequence

Boot state and idle state have no function other than offering the minimum set of controls

required for proper active state operation.

State transitions take a small amount of time and care should be taken to ensure a

certain state is entered before any of the belonging control transmissions is started. After

transmission of a ‘Start’ or ‘Activate’ state transition command it is advised to check the

operation status by I2C read until the new state is found.

TEA685X state transition times will fall within the following limits:

Power-on  Boot state : power supply voltage settling + 5 ms.

(or clock active + 5 ms in case of external clock application)

Boot state  Idle state : 50 ms.

Idle state  Active state : 100 ms.

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6.2 Start-up I2C control transmission sequence

 Supply power on

 Wait until device is found present on the I2C bus (‘boot state’) :

 Repeat APPL_Get_Operation_Status read until I2C acknowledge from device;

status = 0 (‘boot state’) is found.

[ w 40 80 01 [ r 0000 ]

Alternatively Wait radio supply power settling time + 5 ms.

 Send required initializations :

 See 6.2.1 Required initialization I2C transmission – I2C example

and 6.2.2 Required initialization I2C transmission – C code include file

 Start :



[ w 14 0001 ]

 Wait until device is found in ‘idle state’ :

 Repeat APPL_Get_Operation_Status read until status = 1 (‘idle state’) is found.

[ w 40 80 01 [ r 0001 ]

Alternatively Wait 50 ms.

 Set reference frequency

 APPL_Set_ReferenceClock freq. = 9216000/4000000, type = 0.

[ w 40 04 01 003D 0900 0000 ]

: 4 MHz crystal reference.

Not required for default crystal use.

 Activate :

 APPL_Activate mode = 1.

[ w 40 05 01 0001 ]

 Wait until device is found in ‘active state radio standby’ :

 Repeat APPL_Get_Operation_Status read until status = 2 (‘radio standby

state’) is found.

[ w 40 80 01 [ r 0002 ]

Alternatively Wait 100 ms.

 Full API control is available from here for all modules.

Audio and Application are on, FM and AM radio are in low-power standby.

 Example FM_, AM_, AUDIO_ and APLL_ desired user settings : module

initialization.

 Example AUDIO_Set_Mute mode = 0 : disable mute.

[ w 30 0B 01 0000 ]

 Example FM_Tune_To mode = 1, frequency = 8930 : FM radio 89.3 MHz.

[ w 20 01 01 0001 22E2 ]

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6.2.1 Required initialization I2C transmission – I2C example

The following I2C transmissions (version p2.15) are a required part of the V102 boot state

device initialization.

Use of these I2C transmissions is required for proper and full function and performance

as described in this user manual. Version p2.15 replaces previous versions and is a

critical update for AM shortwave use.

Note: The transmission example below shows a data content of 12 words for every ‘1B’

data transmission. The data stream can be split in any desired length on (2-byte) word

boundaries with every data transmission starting with hex value 1B.



[ w 1 C 00 00 ]

[ w 1 C 00 74 ]



[ w 1B F000 382B D080 F000 3832 D080 43B2 3835 D080 F000 7000 C2F7 ]

[ w 1B F000 3866 D080 80FC 3909 D080 F000 390E D080 F000 3911 D080 ]

[ w 1B F000 3971 D080 F000 3928 D080 C4A2 020F 6004 9001 392A D080 ]

[ w 1B F000 38EB D080 F000 3931 D280 F000 3935 D080 4020 3941 D080 ]

[ w 1B 9E30 18F9 D280 F000 3943 D080 F000 3946 D080 F000 3949 D080 ]

[ w 1B 3200 394B D080 9F9E 394D D080 A801 395F D080 F000 3973 D080 ]

[ w 1B F000 3975 D080 F000 3977 D080 F000 398A D080 F000 398D D080 ]

[ w 1B F000 3990 D080 F000 3993 D080 F000 7000 F000 F000 3998 D080 ]

[ w 1B F000 396A D280 F000 39A6 D080 0043 39A9 D980 F000 39AC D080 ]

[ w 1B F000 39C6 D080 F000 39C9 D080 F000 39DA D080 F000 39E8 D080 ]

[ w 1B F000 0E3F 6000 5010 28D8 D280 9101 0136 6000 F000 7000 A017 ]

[ w 1B F000 7000 A0D7 F000 7000 A0E7 F000 7000 A128 F000 7000 A14D ]

[ w 1B F000 7000 A17E F000 2031 D080 F000 04C1 6008 F000 0101 D280 ]

[ w 1B F000 0030 D080 007F 6002 E200 F000 0E22 600A F000 00FF 6003 ]

[ w 1B F000 0142 D280 9003 4002 F000 9043 0170 D180 F000 0169 D080 ]

[ w 1B 0E69 600A A1AE 2023 0001 6001 F000 7000 F000 C4CB 7000 F000 ]

[ w 1B CA09 3023 F000 C2CB 7000 F000 F000 3023 D008 8200 0D50 6008 ]

[ w 1B F000 0D51 6009 3000 2180 6001 F000 4032 F000 3011 45F3 F000 ]

[ w 1B 3092 2D30 6004 3113 2D40 6005 3194 7FFF 6006 3215 0D61 600A ]

[ w 1B 3296 0D6B 600B 3310 0D50 6001 3390 0D5C 6002 3021 0D63 6003 ]

[ w 1B 3031 0D75 600C 30A2 8D00 6001 30B3 0173 6002 3041 0025 6003 ]

[ w 1B 30C2 4044 F000 3143 4035 F000 31C4 6400 6006 3245 1F40 6007 ]

[ w 1B 32C6 7000 F000 3347 1EBC 600D 33C0 0122 6001 3440 FDEE 6002 ]

[ w 1B 3051 7B8F 6003 30D2 C429 6004 3151 1EC2 600E 3253 FF0D 6002 ]

[ w 1B 32D4 7D2E 6003 3061 C19A 6004 30E2 7000 F000 3161 7000 F000 ]

[ w 1B 3263 7000 F000 32E4 7000 D008 F000 0370 D280 F000 7000 A002 ]

[ w 1B F000 7000 A059 F000 0215 D080 F000 0D51 600F F000 0517 600E ]

[ w 1B 23F6 7000 F000 F000 2163 41F5 918F 21F8 4074 C3EF 21E0 F000 ]

[ w 1B C3A4 33F7 F000 D85B 7000 F000 8218 7000 F000 9FAF 1800 F000 ]

[ w 1B 9F0F 31F8 9002 F000 7000 9028 F000 7000 D008 F000 2278 F000 ]

[ w 1B 16D3 6009 A07F 35F0 1EBC 600D F000 0D61 6008 F000 03A5 D280 ]

[ w 1B F000 1EC2 600D F000 0D6B 6008 F000 03A5 D280 F000 2100 F000 ]

[ w 1B 836D 22F1 F000 F000 2377 F000 9041 3670 F000 9E79 7000 9001 ]

[ w 1B F000 32F1 D008 91C7 3375 F000 F000 3470 E600 F000 34F0 E600 ]

[ w 1B F000 2474 F000 F000 24F3 F000 8C24 26F2 4016 8A1B 3474 4FF5 ]

[ w 1B 82B7 34F3 F000 F000 2071 9005 8304 7000 F000 8E67 7000 F000 ]

[ w 1B F000 7000 9002 F000 36F6 F000 F000 34F0 8006 82AF 7000 F000 ]

[ w 1B 821B 7000 D009 8E5F 7000 F000 F000 7000 D009 F000 36F5 F000 ]

[ w 1B F000 3470 F000 4011 2772 A151 908A 20F3 A150 8ED7 3772 F000 ]

[ w 1B F000 37F1 E600 F000 7000 D008 F000 227A F000 16C3 6009 A058 ]

[ w 1B F000 1820 F000 F000 3570 F000 F000 327A D008 8200 0D51 6008 ]

[ w 1B 4003 7000 F000 3380 7000 F000 2106 7000 F000 3700 7000 F000 ]

[ w 1B 3780 4015 F000 3683 7000 F000 3305 0D61 6009 3286 0D6B 600A ]

[ w 1B 3210 7000 F000 3290 7000 F000 3310 7000 F000 3390 7000 F000 ]

[ w 1B 3410 7000 F000 3490 7000 F000 3110 7000 F000 3190 7000 F000 ]

[ w 1B 3220 7000 F000 32A0 7000 F000 3320 7000 F000 33A0 7000 F000 ]

[ w 1B 3420 7000 F000 34A0 7000 F000 3120 7000 F000 31A0 7000 F000 ]

[ w 1B 8200 0D30 600A 0D40 600B C010 F000 1020 F000 0D51 600C C010 ]

[ w 1B F000 1030 F000 F000 35C0 D008 F000 0D75 600F F000 0563 600E ]

[ w 1B 24F7 051D 600D 2576 7000 F000 91C7 20E8 4015 918F 21E9 D409 ]

[ w 1B C3EF 2000 4012 9FBE 2011 5803 A080 3577 9001 F000 7000 D008 ]

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[ w 1B F000 21F5 F000 A0CA 2254 F000 CC09 0517 600C 832C 7000 F000 ]

[ w 1B 8A61 7000 F000 AE48 2245 A119 A228 2078 F000 F000 35F0 F000 ]

[ w 1B F000 1800 F000 F000 3078 F000 16E3 6009 A027 8901 23F4 F000 ]

[ w 1B F000 20F2 F000 8261 2173 F000 A050 3670 F000 A058 2372 E140 ]

[ w 1B A801 22F3 F000 9049 2275 E040 8061 7000 F000 8A51 33F1 F000 ]

[ w 1B A058 7000 F000 AF48 7000 F000 F000 3470 D008 8200 0D75 6008 ]

[ w 1B 9009 0D00 6009 F000 3500 F000 F000 3380 C028 F000 1010 F000 ]

[ w 1B F000 3481 D008 8249 0D75 6008 F000 7000 8FFD 0400 6000 A0FF ]

[ w 1B 8EC0 4000 6005 6000 6005 E600 C81B 7000 F000 D8DB 0D51 6008 ]

[ w 1B 835B 7000 F000 9EBA 3003 F000 F000 3084 D409 F000 7000 8FAF ]

[ w 1B F000 0D75 6008 F000 0D51 6009 F000 2403 F000 F000 2794 D008 ]

[ w 1B A003 7000 F000 0011 0800 F000 0011 0800 C00E A009 0011 0800 ]

[ w 1B A009 7000 F000 A408 7000 D008 A003 7000 F000 0011 0800 F000 ]

[ w 1B 0011 0800 C026 A009 0011 0800 A009 7000 F000 A408 7000 D008 ]

[ w 1B F000 1D01 6008 F000 0A2C 6000 F000 011A 6001 3100 7000 F000 ]

[ w 1B 3181 7000 D008 A801 7FFF 6006 CC0A 7000 F000 8EA1 3106 F000 ]

[ w 1B F000 3206 D409 AEE8 04DF D080 1000 6003 A0DC 3023 0773 D280 ]

[ w 1B F000 07C6 D080 0800 6003 A002 0E6F 6009 F000 0200 6003 8000 ]

[ w 1B F000 0773 D080 40E0 001F 6001 13D5 6007 A006 13FB 6006 F000 ]

[ w 1B 9040 0D28 D280 1405 6006 F000 F000 0D28 D280 140F 6006 F000 ]

[ w 1B F000 0D28 D080 D7CA 00FF 6004 81D7 0CF7 6009 D056 7000 F000 ]

[ w 1B 8276 3017 F000 D0F6 4083 F000 C1A4 2019 F000 82F6 7000 F000 ]

[ w 1B C180 2017 A0C6 C3E7 7000 F000 C5C7 7000 F000 F000 3017 D008 ]

[ w 1B F000 7000 A079 F000 7000 8043 1EC8 6008 A0C0 F000 2000 A0BF ]

[ w 1B 9000 7000 F000 F000 7000 D409 F000 7000 8FC5 1EC8 6008 A0BB ]

[ w 1B F000 3000 D008 0028 6000 A0B9 9E38 0EF4 6009 9E38 7000 9FFF ]

[ w 1B F000 7000 D008 4040 0C8A D580 F000 0C8B D280 F000 0FB1 D280 ]

[ w 1B 9C39 7000 F000 9C31 7000 9004 F000 7000 9003 4010 7000 AFF3 ]

[ w 1B 41F1 4040 F000 F000 10B1 D080 4000 7000 AFF0 41F1 4040 F000 ]

[ w 1B F000 10B2 D080 4071 10B2 D280 F000 1081 D080 F000 0BC9 6008 ]

[ w 1B F000 1D8D D280 F000 16D5 D080 F000 0BC9 6008 F000 1D8F D280 ]

[ w 1B F000 16DA D080 3E91 1F5F D280 F000 238A D080 0D82 6008 A09F ]

[ w 1B F000 3000 D008 0F88 600B 9407 9046 0D82 600A 2EB2 1B93 D280 ]

[ w 1B F000 2025 F000 DAC9 7000 F000 8C69 7000 F000 DD49 3201 F000 ]

[ w 1B 8D89 7000 8001 8C69 7000 F000 F000 1B7F D080 F000 0B60 600E ]

[ w 1B F000 0004 6003 40A7 3FFC 6004 3263 8008 6005 32E4 199A 6006 ]

[ w 1B 3365 0D83 600F 31E6 7000 F000 3077 7000 D008 80E5 7FFF 6000 ]

[ w 1B CC0A 7000 F000 8EA9 3370 F000 AF20 3470 D409 AEE8 7000 F000 ]

[ w 1B A805 0080 6007 A8F6 3375 F000 C386 7000 F000 8F7F 33F6 F000 ]

[ w 1B A885 1DE4 D180 F000 3475 D008 0D83 6009 A080 2012 1F32 D280 ]

[ w 1B F000 3582 D008 9082 0D83 6009 40A7 4077 E640 F000 7000 F000 ]

[ w 1B F000 3017 D008 0BB4 6008 A079 F000 3182 D008 00CF 6000 A005 ]

[ w 1B 4011 0C14 D080 00CF 6000 A003 F000 2022 D080 0151 6000 A001 ]

[ w 1B F000 201E D080 F000 0E69 6008 F000 01D0 6001 F000 3080 F000 ]

[ w 1B F000 3001 D008 836D 0C35 6008 4060 3988 6001 41E2 2196 6003 ]

[ w 1B 3300 4144 F000 3381 7000 F000 3402 7000 F000 3483 0C29 6009 ]

[ w 1B 3504 3996 6000 3585 399B 6003 3090 7000 F000 3393 7000 D008 ]

[ w 1B F000 7000 AF1A F000 7000 8F5F F000 7000 AF58 F000 0C51 D280 ]

[ w 1B F000 21A0 D080 F000 052E D280 F000 7000 A00E F000 21B7 D080 ]

[ w 1B F000 1F32 D280 F000 1E84 D280 F000 21E0 D080 F000 1EA4 D280 ]

[ w 1B F000 07F7 D280 F000 2215 D080 F000 07FB D280 F000 228F D080 ]

[ w 1B 4040 22E1 D280 4080 22E2 D280 F000 229C D080 F000 07FB D280 ]

[ w 1B F000 22B6 D080 F000 20F0 D280 9002 27DF D280 9E69 7000 F000 ]

[ w 1B F000 0700 D180 F000 2320 D080 9082 0C29 6009 4017 4067 E640 ]

[ w 1B F000 7000 F000 F000 3217 D008 F000 07F7 D280 F000 27EA D280 ]

[ w 1B F000 11B5 D080 170B 600C A041 0040 4005 F000 0041 243F D080 ]

[ w 1B F000 7000 AE8F F000 0C8D 6008 F000 260A D080 83FF 0D85 6008 ]

[ w 1B F000 01F4 6000 F000 03B1 6001 1000 03B2 6002 1001 040E 6000 ]

[ w 1B 1002 040F 6001 1000 045C 6002 1001 045D 6000 1002 1380 6001 ]

[ w 1B 1000 0D90 6009 1001 02EE 6000 1007 4306 6001 1010 0469 6002 ]

[ w 1B 1011 4487 6000 1012 05E3 6001 1010 4608 6002 1011 06AE 6000 ]

[ w 1B 1012 0D8E 6008 1010 9E3C 6000 1017 0D84 6009 1000 7000 F000 ]

[ w 1B 1007 7000 F000 1017 7000 D008 0CDF 600B A024 3030 23D6 D280 ]

[ w 1B F000 26E8 D080 0D85 6008 A021 F000 0002 A020 9082 7000 F000 ]

[ w 1B 828A 7000 9003 908A 7000 9001 F000 7000 8FFB 82BF 7000 F000 ]

[ w 1B F000 0199 D280 F000 0D84 6008 F000 26C1 F000 F000 0002 A017 ]

[ w 1B 9082 7000 F000 828A 7000 9003 908A 7000 9001 F000 7000 8FFB ]

[ w 1B 8280 7000 F000 F000 7000 D008 F000 0D90 600D F000 3FFF 6002 ]

[ w 1B F000 0051 A00E C253 7000 F000 8EC4 7000 9001 F000 7000 97FC ]

[ w 1B D48F 0199 D280 4005 0D8E 600D 4017 3FFF 6002 9F7D 0051 A007 ]

[ w 1B C253 7000 F000 82C4 271C D180 F000 7000 97FC 9146 2720 D080 ]

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TEA6850, TEA6851, TEA6852 and TEA6853, /V102

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[ w 1B F000 2915 D280 F000 39EC D280 F000 2888 D080 F000 7000 D008 ]

[ w 1B F000 16C3 6008 F000 009A 6000 F000 02E3 6000 1000 04F4 6000 ]

[ w 1B 1000 06FF 6000 1000 0907 6000 1000 0B10 6000 1000 0D1F 6000 ]

[ w 1B 1000 0F65 6000 1000 0F65 6000 1000 0D1F 6000 1000 0B10 6000 ]

[ w 1B 1000 0907 6000 1000 06FF 6000 1000 04F4 6000 1000 02E3 6000 ]

[ w 1B 1000 009A 6000 F000 1000 F000 F000 1000 F000 F000 16D3 6008 ]

[ w 1B F000 FF93 6000 F000 FE37 6000 1000 FDD9 6000 1000 FE9F 6000 ]

[ w 1B 1000 0385 6000 1000 0D6B 6000 1000 1684 6000 1000 1E49 6000 ]

[ w 1B 1000 1E49 6000 1000 1684 6000 1000 0D6B 6000 1000 0385 6000 ]

[ w 1B 1000 FE9F 6000 1000 FDD9 6000 1000 FE37 6000 1000 FF93 6000 ]

[ w 1B F000 1000 F000 F000 1000 F000 F000 16E3 6008 F000 0064 6000 ]

[ w 1B F000 FFA8 6000 1000 FFA6 6000 1000 FFDF 6000 1000 0001 6000 ]

[ w 1B 1000 0128 6000 1000 012F 6000 1000 FD23 6000 1000 FDA1 6000 ]

[ w 1B 1000 0389 6000 1000 0254 6000 1000 FE7D 6000 1000 008C 6000 ]

[ w 1B 1000 FBE1 6000 1000 F942 6000 1000 0C47 6000 1000 0EA2 6000 ]

[ w 1B 1000 EC43 6000 1000 EACE 6000 1000 1746 6000 1000 1746 6000 ]

[ w 1B 1000 EACE 6000 1000 EC43 6000 1000 0EA2 6000 1000 0C47 6000 ]

[ w 1B 1000 F942 6000 1000 FBE1 6000 1000 008C 6000 1000 FE7D 6000 ]

[ w 1B 1000 0254 6000 1000 0389 6000 1000 FDA1 6000 1000 FD23 6000 ]

[ w 1B 1000 012F 6000 1000 0128 6000 1000 0001 6000 1000 FFDF 6000 ]

[ w 1B 1000 FFA6 6000 1000 FFA8 6000 1000 0064 6000 F000 1000 F000 ]

[ w 1B F000 1000 F000 F000 170B 6008 F000 0003 6000 F000 54C0 6000 ]

[ w 1B 1000 0005 6000 1000 0005 6000 1000 000F 6000 1000 000F 6000 ]

[ w 1B 1000 09C0 6000 1000 0A20 6000 1000 1D40 6000 1000 1E60 6000 ]

[ w 1B F0 00 10 00 F0 00 F000 1000 F000 F000 7000 D008 ]



[ w 1 C 00 00 ]

[ w 1 C 00 75 ]



[ w 1B 4013 402F 4168 41C1 4214 44DE 47C5 47FC 4E56 4E58 4D83 4E49 ]

[ w 1B 4E53 4F92 4FEA 5080 5660 56D4 56D9 59B4 5A3A 5B7E 5DDC 6067 ]

[ w 1B 6088 60A8 619F 61B6 61DF 6214 6259 629B 62A1 6369 643B 6609 ]

[ w 1B 66 E7 67 0B 67 1A 6887 6899 68A7 68B2 ]



[ w 1 C 00 00 ]

NXP Semiconductors

TEA685X User Manual

TEA6850, TEA6851, TEA6852 and TEA6853, /V102

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6.2.2 Required initialization I2C transmission – C code include file

The following data sets (p2.15) are a required part of boot state device initialization.

The C code in this chapter can be included in C program code of a host C and

describes the same data as the I2C script example of chapter 6.2.1.

The C code may be copied from this document but the C code include file can also be

found as part of the PC GUI control program installation (.../documentation/PATCH.c).

* C o p y r i g h t C a t e n a / N X P s e m i c o n d u c t o r s

* C r e a t i o n d a t e : 2 0 1 4 0 4 1 5 1 4 : 2 7 : 3 8

* V e r s i o n : 2 . 0 0 - p 2 . 1 5

* U s a g e :

* Compile and link this C-file and declare in the source-file for required initialization transmissions the following:

* e x t e r n c o n s t s i z e _ t L u t S i z e ;

* e x t e r n c o n s t u n s i g n e d c h a r * p L u t B y t e s ;

* e x t e r n c o n s t s i z e _ t P a t c h S i z e ;

* e x t e r n c o n s t u n s i g n e d c h a r * p P a t c h B y t e s ;

* The source for required initialization transmissions should create the following set of I2C transmissions:

* [ w 1 C 0 0 0 0 ] s c r i p t e x a m p l e : S C 8 1 C 0 0 0 0 P

* [ w 1 C 0 0 7 4 ] s c r i p t e x a m p l e : S C 8 1 C 0 0 7 4 P

* [ w 1B <pPatchBytes> ] script example: S C8 1B F0 00 .... P

* PatchSize of pPatchBytes can be divided (on a 2 byte boundary) in separate transmissions all starting with command identifier 0x1B.

* [ w 1 C 0 0 0 0 ] s c r i p t e x a m p l e : S C 8 1 C 0 0 0 0 P

* [ w 1 C 0 0 7 5 ] s c r i p t e x a m p l e : S C 8 1 C 0 0 7 5 P

* [ w 1B <pLutBytes> ] script example: S C8 1B 40 13 .... P

* LutSize of pLutBytes can be divided (on a 2 byte boundary) in separate transmissions all starting with command identifier 0x1B.

* [ w 1 C 0 0 0 0 ] s c r i p t e x a m p l e : S C 8 1 C 0 0 0 0 P

# i n c l u d e < s t d l i b . h >

e x t e r n c o n s t s i z e _ t P a t c h S i z e ;

e x t e r n c o n s t u n s i g n e d c h a r * p P a t c h B y t e s ;

static const unsigned char PatchByteValues[] =

{

0xF0, 0x00, 0x38, 0x2B, 0xD0, 0x80, 0xF0, 0x00, 0x38, 0x32, 0xD0, 0x80, 0x43, 0xB2, 0x38, 0x35, 0xD0, 0x80, 0xF0, 0x00, 0x70, 0x00, 0xC2, 0xF7,

0xF0, 0x00, 0x38, 0x66, 0xD0, 0x80, 0x80, 0xFC, 0x39, 0x09, 0xD0, 0x80, 0xF0, 0x00, 0x39, 0x0E, 0xD0, 0x80, 0xF0, 0x00, 0x39, 0x11, 0xD0, 0x80,

0xF0, 0x00, 0x39, 0x71, 0xD0, 0x80, 0xF0, 0x00, 0x39, 0x28, 0xD0, 0x80, 0xC4, 0xA2, 0x02, 0x0F, 0x60, 0x04, 0x90, 0x01, 0x39, 0x2A, 0xD0, 0x80,

0xF0, 0x00, 0x38, 0xEB, 0xD0, 0x80, 0xF0, 0x00, 0x39, 0x31, 0xD2, 0x80, 0xF0, 0x00, 0x39, 0x35, 0xD0, 0x80, 0x40, 0x20, 0x39, 0x41, 0xD0, 0x80,

0x9E, 0x30, 0x18, 0xF9, 0xD2, 0x80, 0xF0, 0x00, 0x39, 0x43, 0xD0, 0x80, 0xF0, 0x00, 0x39, 0x46, 0xD0, 0x80, 0xF0, 0x00, 0x39, 0x49, 0xD0, 0x80,

0x32, 0x00, 0x39, 0x4B, 0xD0, 0x80, 0x9F, 0x9E, 0x39, 0x4D, 0xD0, 0x80, 0xA8, 0x01, 0x39, 0x5F, 0xD0, 0x80, 0xF0, 0x00, 0x39, 0x73, 0xD0, 0x80,

0xF0, 0x00, 0x39, 0x75, 0xD0, 0x80, 0xF0, 0x00, 0x39, 0x77, 0xD0, 0x80, 0xF0, 0x00, 0x39, 0x8A, 0xD0, 0x80, 0xF0, 0x00, 0x39, 0x8D, 0xD0, 0x80,

0xF0, 0x00, 0x39, 0x90, 0xD0, 0x80, 0xF0, 0x00, 0x39, 0x93, 0xD0, 0x80, 0xF0, 0x00, 0x70, 0x00, 0xF0, 0x00, 0xF0, 0x00, 0x39, 0x98, 0xD0, 0x80,

0xF0, 0x00, 0x39, 0x6A, 0xD2, 0x80, 0xF0, 0x00, 0x39, 0xA6, 0xD0, 0x80, 0x00, 0x43, 0x39, 0xA9, 0xD9, 0x80, 0xF0, 0x00, 0x39, 0xAC, 0xD0, 0x80,

0xF0, 0x00, 0x39, 0xC6, 0xD0, 0x80, 0xF0, 0x00, 0x39, 0xC9, 0xD0, 0x80, 0xF0, 0x00, 0x39, 0xDA, 0xD0, 0x80, 0xF0, 0x00, 0x39, 0xE8, 0xD0, 0x80,

0xF0, 0x00, 0x0E, 0x3F, 0x60, 0x00, 0x50, 0x10, 0x28, 0xD8, 0xD2, 0x80, 0x91, 0x01, 0x01, 0x36, 0x60, 0x00, 0xF0, 0x00, 0x70, 0x00, 0xA0, 0x17,

0xF0, 0x00, 0x70, 0x00, 0xA0, 0xD7, 0xF0, 0x00, 0x70, 0x00, 0xA0, 0xE7, 0xF0, 0x00, 0x70, 0x00, 0xA1, 0x28, 0xF0, 0x00, 0x70, 0x00, 0xA1, 0x4D,

0xF0, 0x00, 0x70, 0x00, 0xA1, 0x7E, 0xF0, 0x00, 0x20, 0x31, 0xD0, 0x80, 0xF0, 0x00, 0x04, 0xC1, 0x60, 0x08, 0xF0, 0x00, 0x01, 0x01, 0xD2, 0x80,

0xF0, 0x00, 0x00, 0x30, 0xD0, 0x80, 0x00, 0x7F, 0x60, 0x02, 0xE2, 0x00, 0xF0, 0x00, 0x0E, 0x22, 0x60, 0x0A, 0xF0, 0x00, 0x00, 0xFF, 0x60, 0x03,

0xF0, 0x00, 0x01, 0x42, 0xD2, 0x80, 0x90, 0x03, 0x40, 0x02, 0xF0, 0x00, 0x90, 0x43, 0x01, 0x70, 0xD1, 0x80, 0xF0, 0x00, 0x01, 0x69, 0xD0, 0x80,

0x0E, 0x69, 0x60, 0x0A, 0xA1, 0xAE, 0x20, 0x23, 0x00, 0x01, 0x60, 0x01, 0xF0, 0x00, 0x70, 0x00, 0xF0, 0x00, 0xC4, 0xCB, 0x70, 0x00, 0xF0, 0x00,

0xCA, 0x09, 0x30, 0x23, 0xF0, 0x00, 0xC2, 0xCB, 0x70, 0x00, 0xF0, 0x00, 0xF0, 0x00, 0x30, 0x23, 0xD0, 0x08, 0x82, 0x00, 0x0D, 0x50, 0x60, 0x08,

0xF0, 0x00, 0x0D, 0x51, 0x60, 0x09, 0x30, 0x00, 0x21, 0x80, 0x60, 0x01, 0xF0, 0x00, 0x40, 0x32, 0xF0, 0x00, 0x30, 0x11, 0x45, 0xF3, 0xF0, 0x00,

0x30, 0x92, 0x2D, 0x30, 0x60, 0x04, 0x31, 0x13, 0x2D, 0x40, 0x60, 0x05, 0x31, 0x94, 0x7F, 0xFF, 0x60, 0x06, 0x32, 0x15, 0x0D, 0x61, 0x60, 0x0A,

0x32, 0x96, 0x0D, 0x6B, 0x60, 0x0B, 0x33, 0x10, 0x0D, 0x50, 0x60, 0x01, 0x33, 0x90, 0x0D, 0x5C, 0x60, 0x02, 0x30, 0x21, 0x0D, 0x63, 0x60, 0x03,

0x30, 0x31, 0x0D, 0x75, 0x60, 0x0C, 0x30, 0xA2, 0x8D, 0x00, 0x60, 0x01, 0x30, 0xB3, 0x01, 0x73, 0x60, 0x02, 0x30, 0x41, 0x00, 0x25, 0x60, 0x03,

0x30, 0xC2, 0x40, 0x44, 0xF0, 0x00, 0x31, 0x43, 0x40, 0x35, 0xF0, 0x00, 0x31, 0xC4, 0x64, 0x00, 0x60, 0x06, 0x32, 0x45, 0x1F, 0x40, 0x60, 0x07,

0x32, 0xC6, 0x70, 0x00, 0xF0, 0x00, 0x33, 0x47, 0x1E, 0xBC, 0x60, 0x0D, 0x33, 0xC0, 0x01, 0x22, 0x60, 0x01, 0x34, 0x40, 0xFD, 0xEE, 0x60, 0x02,

0x30, 0x51, 0x7B, 0x8F, 0x60, 0x03, 0x30, 0xD2, 0xC4, 0x29, 0x60, 0x04, 0x31, 0x51, 0x1E, 0xC2, 0x60, 0x0E, 0x32, 0x53, 0xFF, 0x0D, 0x60, 0x02,

0x32, 0xD4, 0x7D, 0x2E, 0x60, 0x03, 0x30, 0x61, 0xC1, 0x9A, 0x60, 0x04, 0x30, 0xE2, 0x70, 0x00, 0xF0, 0x00, 0x31, 0x61, 0x70, 0x00, 0xF0, 0x00,

0x32, 0x63, 0x70, 0x00, 0xF0, 0x00, 0x32, 0xE4, 0x70, 0x00, 0xD0, 0x08, 0xF0, 0x00, 0x03, 0x70, 0xD2, 0x80, 0xF0, 0x00, 0x70, 0x00, 0xA0, 0x02,

0xF0, 0x00, 0x70, 0x00, 0xA0, 0x59, 0xF0, 0x00, 0x02, 0x15, 0xD0, 0x80, 0xF0, 0x00, 0x0D, 0x51, 0x60, 0x0F, 0xF0, 0x00, 0x05, 0x17, 0x60, 0x0E,

0x23, 0xF6, 0x70, 0x00, 0xF0, 0x00, 0xF0, 0x00, 0x21, 0x63, 0x41, 0xF5, 0x91, 0x8F, 0x21, 0xF8, 0x40, 0x74, 0xC3, 0xEF, 0x21, 0xE0, 0xF0, 0x00,

0xC3, 0xA4, 0x33, 0xF7, 0xF0, 0x00, 0xD8, 0x5B, 0x70, 0x00, 0xF0, 0x00, 0x82, 0x18, 0x70, 0x00, 0xF0, 0x00, 0x9F, 0xAF, 0x18, 0x00, 0xF0, 0x00,

0x9F, 0x0F, 0x31, 0xF8, 0x90, 0x02, 0xF0, 0x00, 0x70, 0x00, 0x90, 0x28, 0xF0, 0x00, 0x70, 0x00, 0xD0, 0x08, 0xF0, 0x00, 0x22, 0x78, 0xF0, 0x00,

0x16, 0xD3, 0x60, 0x09, 0xA0, 0x7F, 0x35, 0xF0, 0x1E, 0xBC, 0x60, 0x0D, 0xF0, 0x00, 0x0D, 0x61, 0x60, 0x08, 0xF0, 0x00, 0x03, 0xA5, 0xD2, 0x80,

0xF0, 0x00, 0x1E, 0xC2, 0x60, 0x0D, 0xF0, 0x00, 0x0D, 0x6B, 0x60, 0x08, 0xF0, 0x00, 0x03, 0xA5, 0xD2, 0x80, 0xF0, 0x00, 0x21, 0x00, 0xF0, 0x00,

0x83, 0x6D, 0x22, 0xF1, 0xF0, 0x00, 0xF0, 0x00, 0x23, 0x77, 0xF0, 0x00, 0x90, 0x41, 0x36, 0x70, 0xF0, 0x00, 0x9E, 0x79, 0x70, 0x00, 0x90, 0x01,

0xF0, 0x00, 0x32, 0xF1, 0xD0, 0x08, 0x91, 0xC7, 0x33, 0x75, 0xF0, 0x00, 0xF0, 0x00, 0x34, 0x70, 0xE6, 0x00, 0xF0, 0x00, 0x34, 0xF0, 0xE6, 0x00,

0xF0, 0x00, 0x24, 0x74, 0xF0, 0x00, 0xF0, 0x00, 0x24, 0xF3, 0xF0, 0x00, 0x8C, 0x24, 0x26, 0xF2, 0x40, 0x16, 0x8A, 0x1B, 0x34, 0x74, 0x4F, 0xF5,

0x82, 0xB7, 0x34, 0xF3, 0xF0, 0x00, 0xF0, 0x00, 0x20, 0x71, 0x90, 0x05, 0x83, 0x04, 0x70, 0x00, 0xF0, 0x00, 0x8E, 0x67, 0x70, 0x00, 0xF0, 0x00,

0xF0, 0x00, 0x70, 0x00, 0x90, 0x02, 0xF0, 0x00, 0x36, 0xF6, 0xF0, 0x00, 0xF0, 0x00, 0x34, 0xF0, 0x80, 0x06, 0x82, 0xAF, 0x70, 0x00, 0xF0, 0x00,

0x82, 0x1B, 0x70, 0x00, 0xD0, 0x09, 0x8E, 0x5F, 0x70, 0x00, 0xF0, 0x00, 0xF0, 0x00, 0x70, 0x00, 0xD0, 0x09, 0xF0, 0x00, 0x36, 0xF5, 0xF0, 0x00,

0xF0, 0x00, 0x34, 0x70, 0xF0, 0x00, 0x40, 0x11, 0x27, 0x72, 0xA1, 0x51, 0x90, 0x8A, 0x20, 0xF3, 0xA1, 0x50, 0x8E, 0xD7, 0x37, 0x72, 0xF0, 0x00,

0xF0, 0x00, 0x37, 0xF1, 0xE6, 0x00, 0xF0, 0x00, 0x70, 0x00, 0xD0, 0x08, 0xF0, 0x00, 0x22, 0x7A, 0xF0, 0x00, 0x16, 0xC3, 0x60, 0x09, 0xA0, 0x58,

0xF0, 0x00, 0x18, 0x20, 0xF0, 0x00, 0xF0, 0x00, 0x35, 0x70, 0xF0, 0x00, 0xF0, 0x00, 0x32, 0x7A, 0xD0, 0x08, 0x82, 0x00, 0x0D, 0x51, 0x60, 0x08,

0x40, 0x03, 0x70, 0x00, 0xF0, 0x00, 0x33, 0x80, 0x70, 0x00, 0xF0, 0x00, 0x21, 0x06, 0x70, 0x00, 0xF0, 0x00, 0x37, 0x00, 0x70, 0x00, 0xF0, 0x00,

0x37, 0x80, 0x40, 0x15, 0xF0, 0x00, 0x36, 0x83, 0x70, 0x00, 0xF0, 0x00, 0x33, 0x05, 0x0D, 0x61, 0x60, 0x09, 0x32, 0x86, 0x0D, 0x6B, 0x60, 0x0A,

0x32, 0x10, 0x70, 0x00, 0xF0, 0x00, 0x32, 0x90, 0x70, 0x00, 0xF0, 0x00, 0x33, 0x10, 0x70, 0x00, 0xF0, 0x00, 0x33, 0x90, 0x70, 0x00, 0xF0, 0x00,

0x34, 0x10, 0x70, 0x00, 0xF0, 0x00, 0x34, 0x90, 0x70, 0x00, 0xF0, 0x00, 0x31, 0x10, 0x70, 0x00, 0xF0, 0x00, 0x31, 0x90, 0x70, 0x00, 0xF0, 0x00,

0x32, 0x20, 0x70, 0x00, 0xF0, 0x00, 0x32, 0xA0, 0x70, 0x00, 0xF0, 0x00, 0x33, 0x20, 0x70, 0x00, 0xF0, 0x00, 0x33, 0xA0, 0x70, 0x00, 0xF0, 0x00,

0x34, 0x20, 0x70, 0x00, 0xF0, 0x00, 0x34, 0xA0, 0x70, 0x00, 0xF0, 0x00, 0x31, 0x20, 0x70, 0x00, 0xF0, 0x00, 0x31, 0xA0, 0x70, 0x00, 0xF0, 0x00,

0x82, 0x00, 0x0D, 0x30, 0x60, 0x0A, 0x0D, 0x40, 0x60, 0x0B, 0xC0, 0x10, 0xF0, 0x00, 0x10, 0x20, 0xF0, 0x00, 0x0D, 0x51, 0x60, 0x0C, 0xC0, 0x10,

0xF0, 0x00, 0x10, 0x30, 0xF0, 0x00, 0xF0, 0x00, 0x35, 0xC0, 0xD0, 0x08, 0xF0, 0x00, 0x0D, 0x75, 0x60, 0x0F, 0xF0, 0x00, 0x05, 0x63, 0x60, 0x0E,

0x24, 0xF7, 0x05, 0x1D, 0x60, 0x0D, 0x25, 0x76, 0x70, 0x00, 0xF0, 0x00, 0x91, 0xC7, 0x20, 0xE8, 0x40, 0x15, 0x91, 0x8F, 0x21, 0xE9, 0xD4, 0x09,

0xC3, 0xEF, 0x20, 0x00, 0x40, 0x12, 0x9F, 0xBE, 0x20, 0x11, 0x58, 0x03, 0xA0, 0x80, 0x35, 0x77, 0x90, 0x01, 0xF0, 0x00, 0x70, 0x00, 0xD0, 0x08,

0xF0, 0x00, 0x21, 0xF5, 0xF0, 0x00, 0xA0, 0xCA, 0x22, 0x54, 0xF0, 0x00, 0xCC, 0x09, 0x05, 0x17, 0x60, 0x0C, 0x83, 0x2C, 0x70, 0x00, 0xF0, 0x00,

0x8A, 0x61, 0x70, 0x00, 0xF0, 0x00, 0xAE, 0x48, 0x22, 0x45, 0xA1, 0x19, 0xA2, 0x28, 0x20, 0x78, 0xF0, 0x00, 0xF0, 0x00, 0x35, 0xF0, 0xF0, 0x00,

0xF0, 0x00, 0x18, 0x00, 0xF0, 0x00, 0xF0, 0x00, 0x30, 0x78, 0xF0, 0x00, 0x16, 0xE3, 0x60, 0x09, 0xA0, 0x27, 0x89, 0x01, 0x23, 0xF4, 0xF0, 0x00,

0xF0, 0x00, 0x20, 0xF2, 0xF0, 0x00, 0x82, 0x61, 0x21, 0x73, 0xF0, 0x00, 0xA0, 0x50, 0x36, 0x70, 0xF0, 0x00, 0xA0, 0x58, 0x23, 0x72, 0xE1, 0x40,

0xA8, 0x01, 0x22, 0xF3, 0xF0, 0x00, 0x90, 0x49, 0x22, 0x75, 0xE0, 0x40, 0x80, 0x61, 0x70, 0x00, 0xF0, 0x00, 0x8A, 0x51, 0x33, 0xF1, 0xF0, 0x00,

0xA0, 0x58, 0x70, 0x00, 0xF0, 0x00, 0xAF, 0x48, 0x70, 0x00, 0xF0, 0x00, 0xF0, 0x00, 0x34, 0x70, 0xD0, 0x08, 0x82, 0x00, 0x0D, 0x75, 0x60, 0x08,

0x90, 0x09, 0x0D, 0x00, 0x60, 0x09, 0xF0, 0x00, 0x35, 0x00, 0xF0, 0x00, 0xF0, 0x00, 0x33, 0x80, 0xC0, 0x28, 0xF0, 0x00, 0x10, 0x10, 0xF0, 0x00,

0xF0, 0x00, 0x34, 0x81, 0xD0, 0x08, 0x82, 0x49, 0x0D, 0x75, 0x60, 0x08, 0xF0, 0x00, 0x70, 0x00, 0x8F, 0xFD, 0x04, 0x00, 0x60, 0x00, 0xA0, 0xFF,

0x8E, 0xC0, 0x40, 0x00, 0x60, 0x05, 0x60, 0x00, 0x60, 0x05, 0xE6, 0x00, 0xC8, 0x1B, 0x70, 0x00, 0xF0, 0x00, 0xD8, 0xDB, 0x0D, 0x51, 0x60, 0x08,

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NXP Semiconductors

TEA685X User Manual

TEA6850, TEA6851, TEA6852 and TEA6853, /V102

doc

All information provided in this document is subject to legal disclaimers.

User Manual

Rev. 1.2 — 15 April 2014

71 of 81

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0x10, 0x00, 0xEC, 0x43, 0x60, 0x00, 0x10, 0x00, 0xEA, 0xCE, 0x60, 0x00, 0x10, 0x00, 0x17, 0x46, 0x60, 0x00, 0x10, 0x00, 0x17, 0x46, 0x60, 0x00,

0x10, 0x00, 0xEA, 0xCE, 0x60, 0x00, 0x10, 0x00, 0xEC, 0x43, 0x60, 0x00, 0x10, 0x00, 0x0E, 0xA2, 0x60, 0x00, 0x10, 0x00, 0x0C, 0x47, 0x60, 0x00,

0x10, 0x00, 0xF9, 0x42, 0x60, 0x00, 0x10, 0x00, 0xFB, 0xE1, 0x60, 0x00, 0x10, 0x00, 0x00, 0x8C, 0x60, 0x00, 0x10, 0x00, 0xFE, 0x7D, 0x60, 0x00,

0x10, 0x00, 0x02, 0x54, 0x60, 0x00, 0x10, 0x00, 0x03, 0x89, 0x60, 0x00, 0x10, 0x00, 0xFD, 0xA1, 0x60, 0x00, 0x10, 0x00, 0xFD, 0x23, 0x60, 0x00,

0x10, 0x00, 0x01, 0x2F, 0x60, 0x00, 0x10, 0x00, 0x01, 0x28, 0x60, 0x00, 0x10, 0x00, 0x00, 0x01, 0x60, 0x00, 0x10, 0x00, 0xFF, 0xDF, 0x60, 0x00,

0x10, 0x00, 0xFF, 0xA6, 0x60, 0x00, 0x10, 0x00, 0xFF, 0xA8, 0x60, 0x00, 0x10, 0x00, 0x00, 0x64, 0x60, 0x00, 0xF0, 0x00, 0x10, 0x00, 0xF0, 0x00,

0xF0, 0x00, 0x10, 0x00, 0xF0, 0x00, 0xF0, 0x00, 0x17, 0x0B, 0x60, 0x08, 0xF0, 0x00, 0x00, 0x03, 0x60, 0x00, 0xF0, 0x00, 0x54, 0xC0, 0x60, 0x00,

0x10, 0x00, 0x00, 0x05, 0x60, 0x00, 0x10, 0x00, 0x00, 0x05, 0x60, 0x00, 0x10, 0x00, 0x00, 0x0F, 0x60, 0x00, 0x10, 0x00, 0x00, 0x0F, 0x60, 0x00,

0x10, 0x00, 0x09, 0xC0, 0x60, 0x00, 0x10, 0x00, 0x0A, 0x20, 0x60, 0x00, 0x10, 0x00, 0x1D, 0x40, 0x60, 0x00, 0x10, 0x00, 0x1E, 0x60, 0x60, 0x00,

0xF0, 0x00, 0x10, 0x00, 0xF0, 0x00, 0xF0, 0x00, 0x10, 0x00, 0xF0, 0x00, 0xF0, 0x00, 0x70, 0x00, 0xD0, 0x08

};

c o n s t s i z e _ t P a t c h S i z e = s i z e o f ( P a t c h B y t e V a l u e s ) ;

const unsigned char * pPatchBytes = &PatchByteValues[0];

e x t e r n c o n s t s i z e _ t L u t S i z e ;

e x t e r n c o n s t u n s i g n e d c h a r * p L u t B y t e s ;

s t a t i c u n s i g n e d c h a r L u t B y t e V a l u e s [ ] =

{

0 x 4 0 , 0 x 1 3 , 0 x 4 0 , 0 x 2 F , 0 x 4 1 , 0 x 6 8 , 0 x 4 1 , 0 x C 1 ,

0 x 4 2 , 0 x 1 4 , 0 x 4 4 , 0 x D E , 0 x 4 7 , 0 x C 5 , 0 x 4 7 , 0 x F C ,

0 x 4 E , 0 x 5 6 , 0 x 4 E , 0 x 5 8 , 0 x 4 D , 0 x 8 3 , 0 x 4 E , 0 x 4 9 ,

0 x 4 E , 0 x 5 3 , 0 x 4 F , 0 x 9 2 , 0 x 4 F , 0 x E A , 0 x5 0 , 0 x 8 0 ,

0 x 5 6 , 0 x 6 0 , 0 x 5 6 , 0 x D 4 , 0 x 5 6 , 0 x D 9 , 0 x 5 9 , 0 x B 4 ,

0 x 5 A , 0 x 3 A , 0 x 5 B , 0 x 7 E , 0 x 5 D , 0 x D C , 0 x 6 0 , 0 x 6 7 ,

0 x 6 0 , 0 x 8 8 , 0 x 6 0 , 0 x A 8 , 0 x 6 1 , 0 x 9 F , 0 x 6 1 , 0 x B 6 ,

0 x 6 1 , 0 x D F , 0 x 6 2 , 0 x 1 4 , 0 x 6 2 , 0 x 5 9 , 0 x 6 2 , 0 x 9 B ,

0 x 6 2 , 0 x A 1 , 0 x 6 3 , 0 x 6 9 , 0 x 6 4 , 0 x 3 B , 0 x 6 6 , 0 x 0 9 ,

0 x 6 6 , 0 x E 7 , 0 x 6 7 , 0 x 0 B , 0 x 6 7 , 0 x 1 A , 0 x 6 8 , 0 x 8 7 ,

0 x 6 8 , 0 x 9 9 , 0 x 6 8 , 0 x A 7 , 0 x 6 8 , 0 x B 2

};

const size_t LutSize = sizeof(LutByteValues);

c o n s t u n s i g n e d c h a r * p L u t B y t e s = & L u t B y t e V a l u e s [ 0 ];

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6.2.3 Required initialization I2C transmission – version p2.15

Initialization version p2.15 is a required part of the V102 device startup.

Initialization version p2.15 offers the following updates over earlier releases:

Fix

 AM Shortwave use: resolved failing reception after switching from FM 94.1 MHz

to AM Shortwave band

Performance

 FM multipath suppression and AFU, Jump tuning: resolved audio amplitude

disturbance after Jump / AFU tuning from high to low signal condition

Initialization version p2.15 includes all the advantages offered from earlier versions:

Fix

 p2.14: Radio tuning robustness, resolving issue of wrong quality read and muted

audio after > 65000 tunings with less than 32 ms between tuning actions

 p2.14: Erroneous level result in high signal conditions (in certain cases

depending on RF AGC threshold, level step correction and level offset settings)

 p2.14: Resolved potential issue of boot state robustness

 p2.13: Tuning action sequence FM Check – FM Preset and FM Check – FM

Search; resolved issue of frozen weak signal handling

 p2.13: Tuning action sequence FM Check – FM Jump – … – FM Check; proper

weak signal handling start at closing of FM Check (by Jump, AFU or End action)

 p2.12: Resolved critical issue of muted FM radio after temperature change

 p2.12: Resolved critical issue on variant read

 p2.12: Resolved issue concerning AM noise blanker false triggering on specific

condition of 30 kHz adjacent signal with HD radio digital modulation

 p2.12: Improved digital radio large signal handling

Performance

 p2.13: Optimized digital radio large signal handling timing and adapted threshold

 p2.10: Reduction of potential whistle in the AM SW band at the crystal frequency

 p2.10: Improved digital radio high level signal response and fast settling at tuning

 p2.09: Avoidance of potential whistle at 77.40 MHz

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6.3 Operation state description

6.3.1 Boot state

After power-on the device is found in ‘boot state’, controlled by the integrated power-on-

reset detection.

Parallel to the supply power detection a clock signal detector is present which ensures

boot state is entered only when a clock signal is present in order to safeguard the

external clock application case.

In case of a harmful disruption of the power supply voltage (power dip) or reference clock

signal the present operation state will be reset and boot state will be available after

power supply voltage and reference signal are re-established.

In boot state the device functionality is reduced to the bare minimum defined by

hardware only.

Required additions to the built-in firmware can be loaded up from the host C to the

internal RAM of the device.

‘Boot state’ is identified by

 The I²C bus is active; I²C transmissions are acknowledged by the device.

(Note: the I²C device address has been determined during power-on).

 The device is in full power-down.

 GPIO and digital output pins are ‘open’.

 No API commands are available; only hardware support.

API commands are ignored and do not harm the boot state operation.

 Reading APPL_Get_Operation_Status returns ‘boot state’ (0).

Note: This API read operation is defined by the fact that any API read will return ‘0’ here.

This property can be used by the radio system C to detect an unforeseen power dip

occurrence or unforeseen disruption of the (external) clock reference signal.

 The device can receive certain dedicated hardware commands and data;

Device version V102 requires an initialization at this point for function and

performance.

 Command ‘Start’ will bring the device into ‘idle state’.

Note: The ‘Start’ command is made up of I2C data byte values “14h 00h 01h”.

In API definition style this equals a transmission of module = 20, cmd = 0, index = 1 and

no parameters.

6.3.2 Idle state

Changing ‘boot state’ to ‘idle state’ takes a time of less than 50 ms.

Presence of ‘idle state’ can be verified by APPL_Get_Operation_Status returning ‘idle

state’ (status = 1).

In ‘idle state’ very limited control functionality is available, only specific API commands

required for system definition are available here.

‘Idle state’ is identified by

 The I²C bus is active; I²C transmissions are acknowledged by the device.

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 The device is in power-down.

 GPIO and digital output pins are ‘open’.

 Reading APPL_Get_Operation_Status will return ‘idle state’ (1).

 The device can receive certain API commands for application definition purposes

(APPL_Set_ReferenceClock).

 The device can return certain API status information (APPL_Get_Identification,

APPL_Get_Last_Write).

 Command APPL_Activate will bring the device into ‘active state’ = radio standby.

6.3.3 Active state

Changing ‘idle state’ to ‘active state’ takes a time of less than 100 ms.

Presence of ‘active state’ can be verified by APPL_Get_Operation_Status returning the

radio standby ‘active state’ (2).

On first activation pin states do not change and the device enters the reduced power

state of ‘radio standby’.

The full set of API commands is available now allowing initialization of the different

modules including the disabled modules of ‘FM’ and ‘AM’. The operation mode can be

completed now by enabling either FM or AM radio operation and releasing the audio

mute.

‘Active state’ is identified by

 The I²C bus is active; I²C transmissions are acknowledged by the device.

 The device is in operation (initial operation mode is ‘radio standby’)

 At initial ‘radio standby’ operation the DR and GPIO pins are ‘open’.

 In FM / AM operation the DR and GPIO pins are in their selected FM / AM state

(and default state ‘open’ when not initialized).

 In ‘radio standby’ operation, after FM or AM, the DR pins remain in their previous

radio state (with invalid data) and GPIO radio features are disconnected (i.e.

GPIO pins are ‘open’).

 Reading APPL_Get_Operation_Status will return one of the ‘active’ states; radio

standby (2), FM (3) or AM (4).

 The device can handle API commands for all modules for additional initialization

and control including disabled modules like FM and/or AM.

 API get commands result in valid read data for enabled modules only.

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7. Overview of available commands

Table 1. Command overview - write

Module

Cmd

3.1

FM/AM

Tune_To

mode

frequency [kHz]

3.2

Set_Tune_Options

afu_bw_mode

afu_bandw [kHz]

mute_time [ms]

sample_time [ms]

3.3

FM/AM

Set_Bandwidth

mode

bandwidth [kHz]

sensitivity [%]

lo_sensitivity [%]

3.4

FM/AM

Set_RFAGC

start [dBuV]

extension

3.5

Set_Antenna

attenuation [dB]

3.6

Set_MphSuppression

mode

3.7

FM/AM

Set_NoiseBlanker

mode

sensitivity [%]

3.8

Set_NoiseBlanker_Audio

mode

sensitivity [%]

3.9

FM/AM

Set_DigitalRadio

mode

3.10

Set_Deemphasis

timeconstant [us]

3.11

FM/AM

Set_LevelStep

step1 [dB]

step2 [dB]

step3 [dB]

step4 [dB]

step5 [dB]

step6 [dB]

step7 [dB]

3.12

FM/AM

Set_LevelOffset

offset [dB]

3.13

FM/AM

Set_SoftMute_Time

slow_attack [ms]

slow_decay [ms]

fast_attack [ms]

fast_decay [ms]

FM/AM

Set_SoftMute_Level

mode

start [dBuV]

slope [dB]

Set_SoftMute_Noise

mode

start [%]

slope [%]

Set_SoftMute_Mph

mode

start [%]

slope [%]

FM/AM

Set_SoftMute_Max

mode

limit [dB]

3.14

FM/AM

Set_HighCut_Time

slow_attack [ms]

slow_decay [ms]

fast_attack [ms]

fast_decay [ms]

FM/AM

Set_HighCut_Level

mode

start [dBuV]

slope [dB]

Set_HighCut_Noise

mode

start [%]

slope [%]

Set_HighCut_Mph

mode

start [%]

slope [%]

FM/AM

Set_HighCut_Max

mode

limit [Hz]

FM/AM

Set_HighCut_Min

mode

limit [Hz]

FM/AM

Set_LowCut_Min

mode

limit [Hz]

FM/AM

Set_HighCut_Options

mode

3.15

Set_Stereo_Time

slow_attack [ms]

slow_decay [ms]

fast_attack [ms]

fast_decay [ms]

Set_Stereo_Level

mode

start [dBuV]

slope [dB]

Set_Stereo_Noise

mode

start [%]

slope [%]

Set_Stereo_Mph

mode

start [%]

slope [%]

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Module

Cmd

Set_Stereo_Max

mode

Set_Stereo_Min

mode

limit [dB]

3.16

FM/AM

Set_Scaler

gain [dB]

3.17

Set_RDS

mode

restart

interface

3.18

FM/AM

Set_QualityStatus

mode

interface

3.19

FM/AM

Set_DR_Blend

mode

in_time [ms]

out_time [ms]

gain [dB]

3.20

FM/AM

Set_DR_Options

samplerate

mode

format

3.21

FM/AM

Set_Specials

ana_out

3.22

AUDIO

Set_Volume

volume [dB]

3.23

AUDIO

Set_Mute

mode

3.24

AUDIO

Set_Input

source

3.25

AUDIO

Set_Output_Source

signal

source

3.26

AUDIO

Set_Ana_Out

signal

mode

3.27

AUDIO

Set_Dig_IO

signal

mode

format

operation

samplerate

3.28

AUDIO

Set_Input_Scaler

source

gain [dB]

3.29

AUDIO

Set_WaveGen

mode

offset

amplitude1

frequency1

amplitude2

frequency2

3.30

APPL

Set_OperationMode

mode

3.31

APPL

Set_GPIO

module

feature

3.32

APPL

Set_ReferenceClock

frequency_msb

frequency_lsb

type

3.33

APPL

Activate

mode

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Table 2. Command overview - read

Module

Cmd

4.1

FM/AM

128

Get_Quality_Status

status

level

usn

wam

offset

bandwidth

modulation

FM/AM

129

Get_Quality_Data

status

level

usn

wam

offset

bandwidth

modulation

4.2

130

Get_RDS_Status

status

a_block

b_block

c_block

d_block

dec_error

131

Get_RDS_Data

status

a_block

b_block

c_block

d_block

dec_error

4.3

FM/AM

132

Get_AGC

input_att

feedback_att

4.4

FM/AM

133

Get_Signal_Status

status

(stereo, digital)

4.5

FM/AM

134

Get_Processing_Status

softmute

highcut

4.6

FM/AM

135

Get_Interface_Status

samplerate

4.7

APPL

128

Get_Operation_Status

status

4.8

APPL

129

Get_GPIO_Status

status

(pin state)

4.9

APPL

130

Get_Identification

device

(type, variant)

hw_version

(main, sub)

sw_version

4.10

APPL

131

Get_LastWrite

size / module

cmd / index

parameter

Error!

Unknow

docume

property

name.

Error! Unknown document property name.

Error! Unknown document property

name.

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8. Legal information

8.1 Definitions

Draft — The document is a draft version only. The content is still under

internal review and subject to formal approval, which may result in

modifications or additions. NXP Semiconductors does not give any

representations or warranties as to the accuracy or completeness of

information included herein and shall have no liability for the consequences

of use of such information.

8.2 Disclaimers

Limited warranty and liability — Information in this document is believed to

be accurate and reliable. However, NXP Semiconductors does not give any

representations or warranties, expressed or implied, as to the accuracy or

completeness of such information and shall have no liability for the

consequences of use of such information.

In no event shall NXP Semiconductors be liable for any indirect, incidental,

punitive, special or consequential damages (including - without limitation -

lost profits, lost savings, business interruption, costs related to the removal

or replacement of any products or rework charges) whether or not such

damages are based on tort (including negligence), warranty, breach of

contract or any other legal theory.

Notwithstanding any damages that customer might incur for any reason

whatsoever, NXP Semiconductors’ aggregate and cumulative liability

towards customer for the products described herein shall be limited in

accordance with the Terms and conditions of commercial sale of NXP

Semiconductors.

Right to make changes — NXP Semiconductors reserves the right to make

changes to information published in this document, including without

limitation specifications and product descriptions, at any time and without

notice. This document supersedes and replaces all information supplied prior

to the publication hereof.

Suitability for use — NXP Semiconductors products are not designed,

authorized or warranted to be suitable for use in life support, life-critical or

safety-critical systems or equipment, nor in applications where failure or

malfunction of an NXP Semiconductors product can reasonably be expected

to result in personal injury, death or severe property or environmental

damage. NXP Semiconductors accepts no liability for inclusion and/or use of

NXP Semiconductors products in such equipment or applications and

therefore such inclusion and/or use is at the customer’s own risk.

Applications — Applications that are described herein for any of these

products are for illustrative purposes only. NXP Semiconductors makes no

representation or warranty that such applications will be suitable for the

specified use without further testing or modification.

Customers are responsible for the design and operation of their applications

and products using NXP Semiconductors products, and NXP

Semiconductors accepts no liability for any assistance with applications or

customer product design. It is customer’s sole responsibility to determine

whether the NXP Semiconductors product is suitable and fit for the

customer’s applications and products planned, as well as for the planned

application and use of customer’s third party customer(s). Customers should

provide appropriate design and operating safeguards to minimize the risks

associated with their applications and products.

NXP Semiconductors does not accept any liability related to any default,

damage, costs or problem which is based on any weakness or default in the

customer’s applications or products, or the application or use by customer’s

third party customer(s). Customer is responsible for doing all necessary

testing for the customer’s applications and products using NXP

Semiconductors products in order to avoid a default of the applications and

the products or of the application or use by customer’s third party

customer(s). NXP does not accept any liability in this respect.

Export control — This document as well as the item(s) described herein

may be subject to export control regulations. Export might require a prior

authorization from competent authorities.

8.3 Trademarks

Notice: All referenced brands, product names, service names and

trademarks are property of their respective owners.

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9. List of figures

Fig 1. I²C control –TEA685X ....................................... 4

Fig 4. Examples of I²C write control; set command ... 59

Fig 5. Examples of I²C read control; get command ... 60

Fig 6. Example of a possible get command with

parameter(s) ................................................... 61

Fig 7. Examples of I²C transmissions with repeated

start ................................................................. 61

Fig 8. Example of testing device presence. .............. 61

Fig 9. Example of I²C read control with guaranteed

400 kHz operation; get command index = 0 .... 62

Fig 10. Examples of alternative I²C read control with

guaranteed read data setup ............................ 63

Fig 11. Example of write command with evaluation data

read ................................................................. 63

Fig 12. Examples of I²C read control with confirmation;

get command index = 0 ................................... 64

Fig 13. Block diagram of device start-up control

sequence ........................................................ 65

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10. List of tables

Table 1. Command overview - write.............................. 75

Table 2. Command overview - read .............................. 77

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described herein, have been included in the section 'Legal information'.

For more information, please visit: http://www.nxp.com

For sales office addresses, please send an email to: salesaddresses@nxp.com

Date of release: 15 April 2014

Document identifier: doc

11. Contents

1. Introduction ......................................................... 3

2. Control interface .................................................. 3

2.1 Overview ............................................................ 3

2.2 History ................................................................ 5

3. Write commands ................................................. 6

3.1 FM / AM cmd 1 Tune_To.................................. 7

3.1.1 radio tuning actions with setting of band and

frequency ........................................................... 7

3.2 FM cmd 2 Set_Tune_Options ........................ 10

3.3 FM / AM cmd 10 Set_Bandwidth .................... 11

3.4 FM / AM cmd 11 Set_RFAGC ........................ 12

3.5 AM cmd 12 Set_Antenna ............................... 13

3.6 FM cmd 20 Set_MphSuppression .................. 14

3.7 FM / AM cmd 23 Set_NoiseBlanker ............... 15

3.8 AM cmd 24 Set_NoiseBlanker_Audio ............. 15

3.9 FM / AM cmd 30 Set_DigitalRadio ................. 16

3.10 FM cmd 31 Set_Deemphasis ......................... 16

3.11 FM / AM cmd 38 Set_LevelStep ..................... 17

3.12 FM / AM cmd 39 Set_LevelOffset .................. 18

3.13 FM / AM cmd 40 … 45 Set_Softmute ............. 19

3.14 FM / AM cmd 50 … 59 Set_Highcut ............... 22

3.15 FM cmd 60 … 66 Set_Stereo ......................... 27

3.16 FM / AM cmd 80 Set_Scaler .......................... 30

3.17 FM cmd 81 Set_RDS ..................................... 31

3.18 FM / AM cmd 82 Set_QualityStatus ............... 32

3.19 FM / AM cmd 83 Set_DR_Blend .................... 33

3.20 FM / AM cmd 84 Set_DR_Options ................. 34

3.21 FM / AM cmd 85 Set_Specials ....................... 35

3.22 AUDIO cmd 10 Set_Volume ........................... 36

3.23 AUDIO cmd 11 Set_Mute ............................... 36

3.24 AUDIO cmd 12 Set_Input ............................... 37

3.25 AUDIO cmd 13 Set_Output_Source ............... 37

3.26 AUDIO cmd 21 Set_Ana_Out ......................... 38

3.27 AUDIO cmd 22 Set_Dig_IO............................ 38

3.28 AUDIO cmd 23 Set_Input_Scaler ................... 39

3.29 AUDIO cmd 24 Set_WaveGen ....................... 40

3.30 APPL cmd 1 Set_OperationMode .................. 41

3.31 APPL cmd 3 Set_GPIO .................................. 42

3.32 Idle state - APPL cmd 4 Set_ReferenceClock 43

3.33 Idle state - APPL cmd 5 Activate .................... 44

4. Read commands ................................................ 45

4.1 FM / AM cmd 128 / 129 Get_Quality .............. 46

4.2 FM cmd 130 / 131 Get_RDS .......................... 48

4.2.1 RDS read modes .............................................. 48

4.2.2 Read data definition for RDS decoder mode .... 48

4.2.3 RDS read operation for decoder mode ............ 49

4.2.4 Read data definition for RDS demodulator mode

......................................................................... 51

4.2.5 RDS read for demodulator mode operation ...... 51

4.3 FM / AM cmd 132 Get_AGC ........................... 53

4.4 FM / AM cmd 133 Get_Signal_Status ............ 53

4.5 FM / AM cmd 134 Get_Processing_Status ..... 54

4.6 FM / AM cmd 135 Get_Interface_Status ........ 55

4.7 APPL cmd 128 Get_Operation_Status ........... 56

4.8 APPL cmd 129 Get_GPIO_Status .................. 56

4.9 APPL cmd 130 Get_Identification ................... 57

4.10 APPL cmd 131 Get_LastWrite ........................ 58

5. I²C bus protocol ................................................. 59

5.1 I²C protocol ....................................................... 59

5.2 Write control ..................................................... 59

5.3 Read control ..................................................... 60

5.4 I²C repeated start ............................................. 61

5.5 Polling device presence.................................... 61

5.6 I²C read timing requirements ............................ 61

5.7 Special control .................................................. 63

5.7.1 Set command confirmation; special evaluation

read control ...................................................... 63

5.7.2 Get command confirmation; special evaluation

read control ...................................................... 64

6. Device start-up ................................................... 65

6.1 Introduction ....................................................... 65

6.2 Start-up I2C control transmission sequence ..... 66

6.2.1 Required initialization I2C transmission – I2C

example ............................................................ 67

6.2.2 Required initialization I2C transmission – C code

include file ........................................................ 70

6.2.3 Required initialization I2C transmission – version

p2.15 ................................................................ 72

6.3 Operation state description ............................... 73

6.3.1 Boot state ......................................................... 73

6.3.2 Idle state ........................................................... 73

6.3.3 Active state ....................................................... 74

7. Overview of available commands .................... 75

8. Legal information .............................................. 78

8.1 Definitions ......................................................... 78

8.2 Disclaimers ....................................................... 78

8.3 Trademarks ...................................................... 78

9. List of figures ..................................................... 79

10. List of tables ...................................................... 80

11. Contents ............................................................. 81

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