Dialog Semiconductor SC14A DECT Cordless Voice Module User Manual SC14CVMDECTv1 2ls

Dialog Semiconductor BV DECT Cordless Voice Module SC14CVMDECTv1 2ls

user manual

SC14CVMDECT Cordless Voice Module

DATASHEET

General description

The SC14CVMDECT is a member of the Cordless

Module family with integrated radio transceiver and

baseband in a single package. It is designed for hosted

and embedded cordless voice and data applications in

the DECT frequency band. Its simple to use

AT Commands set allows setting up of a wireless link

between 2 or more nodes without detailed knowledge

of the DECT protocol.

Features

nCompletely ETSI-certified

nETSI 300 444 (DECT GAP) compliant

nFCC approved

nSupports EU-DECT (CAT-iq V1 wideband audio),

DECT6.0 for North America and Japan DECT (pend-

ing approval)

nUp-to 6 portable parts registered per fixed part

nUART interface to external host

nControllable via AT command set (over UART)

nSupport voice and low speed data

nRF range: 1870 - 1930 MHz

nReceiver sensitivity < -93 dBm

nTransmit power 23 dBm (200 mW)

nAntenna’s included

nPower supply voltage 1.9 - 3.45V

nSmall form factor (25mm * 29mm)

nContains both PP and FP functionality

nProgram memory available for custom software.

Application Examples

nCordless Intercom

nCordless baby monitor

nWireless Data applications up to 1.6 Kbit/s.

________________________________________________________________________________________________

System Diagram

SC14CVMDECT

Fixed Part

Voice

Host

SC14CVMDECTHost

US/EU/JP*

DECT

Portable Part 0

Voice

SC14CVMDECTHost

Portable Part 1

Voice

SC14CVMDECTHost

Portable Part 5

Voice

Voice 32kbits/s

Data 1.6kbits/s

* Only end-products

can be CAT-iq certified

SC14CVMDECT

Cordless Voice Module

August 19, 2011 v1.2.1

SC14CVMDECT Cordless Voice Module

Table of Contents

1.0 Connection Diagram . . . . . . . . . . . . . . . . . . . . . . . 3

1.1 PIN DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . 3

2.0 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.1 SCOPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.2 ORDERING INFORMATION . . . . . . . . . . . . . . . 8

2.3 REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.4 GLOSSARY AND DEFINITIONS . . . . . . . . . . . 8

3.0 Cordless Voice Module functionality . . . . . . . . . . 9

3.1 MODULE HARDWARE . . . . . . . . . . . . . . . . . . . 9

3.2 SOFTWARE CONTROL . . . . . . . . . . . . . . . . . . 9

3.3 DECT PROTOCOL STACK . . . . . . . . . . . . . . . 9

3.4 PORTABLE PART CONFIGURATION . . . . . 10

3.5 FIXED PART CONFIGURATION . . . . . . . . . . 12

3.6 LIGHT DATA APPLICATION . . . . . . . . . . . . . 14

3.7 FUNCTIONAL OVERVIEW . . . . . . . . . . . . . . . 15

4.0 Functional description. . . . . . . . . . . . . . . . . . . . . 16

4.1 UART INTERFACE . . . . . . . . . . . . . . . . . . . . . 16

4.2 EEPROM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.3 PP AUDIO CONFIGURATIONS . . . . . . . . . . . 17

4.4 CALL HANDLING . . . . . . . . . . . . . . . . . . . . . . 20

4.5 TONE/MELODY HANDLING. . . . . . . . . . . . . . 20

4.6 DATE AND REAL-TIME CLOCK . . . . . . . . . . 20

4.7 PROTOCOL STACK . . . . . . . . . . . . . . . . . . . 22

4.8 REGISTRATION . . . . . . . . . . . . . . . . . . . . . . 23

4.9 PCM INTERFACE . . . . . . . . . . . . . . . . . . . . . 24

5.0 CAT-iq . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

5.1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . 29

5.2 CAT-IQ PROFILE OVERVIEW . . . . . . . . . . . . 29

6.0 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

6.1 ABSOLUTE MAXIMUM RATINGS . . . . . . . . . 30

6.2 DIGITAL INPUT LEVELS . . . . . . . . . . . . . . . . 31

6.3 DIGITAL OUTPUT LEVELS . . . . . . . . . . . . . . 31

6.4 LOUDSPEAKER LOAD CIRCUITS. . . . . . . . . 31

6.5 GENERAL SPECIFICATIONS . . . . . . . . . . . . 33

6.6 BASEBAND SPECIFICATIONS . . . . . . . . . . . 33

6.7 RADIO PART (RF) SPECIFICATIONS . . . . . . 33

6.8 FP POWER SUPPLY . . . . . . . . . . . . . . . . . . . 34

7.0 Design guidelines. . . . . . . . . . . . . . . . . . . . . . . . . 35

7.1 APPLICATION SOFTWARE FOR PP . . . . . . 35

7.2 APPLICATION SOFTWARE FOR FP . . . . . . 35

7.3 HARDWARE DESIGN GUIDELINES . . . . . . . 36

8.0 Audio Level Adjustment . . . . . . . . . . . . . . . . . . . 37

8.1 PP AUDIO LEVEL . . . . . . . . . . . . . . . . . . . . . . 37

8.2 FP AUDIO LEVEL) . . . . . . . . . . . . . . . . . . . . . 37

9.0 Example Application Diagram. . . . . . . . . . . . . . . 38

10.0 Mechanical Dimensions . . . . . . . . . . . . . . . . . . 39

11.0 Module integration . . . . . . . . . . . . . . . . . . . . . . . 40

11.1 MODULE PLACEMENT ON THE MAIN BOARD

12.0 UTAM membership waiver . . . . . . . . . . . . . . . . 41

13.0 Soldering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

13.1 SOLDERING PROFILE. . . . . . . . . . . . . . . . . 42

13.2 COPPER PAD AND SOLDER OPENING . . . 42

13.3 STENCIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

14.0 Notices to OEM. . . . . . . . . . . . . . . . . . . . . . . . . . 44

14.1 FCC REQUIREMENTS REGARDING THE END

PRODUCT AND THE END USER . . . . . . . . . 44

14.2 PRECAUTIONS REGARDING UNINTENDED

COUPLING . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

14.3 END APPLICATION APPROVAL . . . . . . . . . 44

14.4 SAFETY REQUIREMENTS . . . . . . . . . . . . . . . . . 44

SC14CVMDECT Cordless Voice Module

1.0 Connection Diagram

1.1 PIN DESCRIPTION

Figure 1 Connection Diagram (Bottom View)

121110 9 8 7 6 5 4 3 2 1

Table 1: Pin description

Pin Module

Pin name

In/

Out

Iout

Drive

(mA)

Reset

State Description

A1 GND -- -Ground

A2 GND -- -Ground

A3 GND -- -Ground

A4 NC - - I leave unconnected

A5 VDDIO I - - Supply voltage for internal QSPI and data flash. Must be connected

to VDD (1.8V).

A6 P1[2]/INT2 IO 2 I-PU I/O port.

INT2: Interrupt Input.

A7 GND -- -Ground

A8 GND -- -Ground

A9 VBAT I - - Main supply voltage <5.5V. Can be directly connected to a Li-Ion

battery.

A10 P0[4] / SPI_EN IO 8 I-PU I/O port

SPI_EN

A11 RSTn I 1 I-PU

(200k

pull-up)

Active low Reset input with Schmitt-trigger input, open-drain output

and pull up resistor to internal VDD. Input may not exceed 2.0 V. An

internal capacitor of 100nF is mounted on this pin.

B1 GND -- -Ground

B2 GND -- -Ground

B3 CP_VOUT1 O - I Charge Pump Output 1.

Must be connected through a capacitor of 1uF to gnd

B4 P1[5]/INT5 IO 8 O-1 I/O Port

INT5: Interrupt Input.

SC14CVMDECT Cordless Voice Module

B5 GND -- -Ground

B6 P2[6]/INT6 /

WTF_IN

IO 2 I-PU I/O port

INT6: Interrupt Input.

WTF_IN: -

B7 P0[5] / SPI_CLK IO 8 I-PU I/O Port

SPI Clock

B8 GND -- -

B9 P0[1] / URX IO 8 I-PD

(10k)

I/O port

UART Serial In

B10 VBATT I - - Secondary supply voltage. Connect to VCCRF.

B11 GND -- -Ground

B12 NC - - - RF pad, no pad on PCB

C1 GND -- -Ground

C2 PAOUTn IO 500 O-0 (5k

fixed

pull-

down)

CLASSD loudspeaker positive output

C3 GND -- -Ground

C4 P2[7]/INT7 IO 8 I-PU I/O port

INT7: Interrupt

C5 P1[4]/INT4 IO 1/2 I-PD I/O port

INT4: Interrupt

C6 P1[1]/INT1 IO 2 I-PU I/O Port

INT1: Interrupt

LE: -

INT6: secondary Interrupt

C7 GND -- -Ground

C8 P0[0] / UTX O 8 I-PU I/O Port

UART Serial Out

C9 GND -- -Ground

C10 JTAG IO 8 I-PU JTAG-SDI+; one wire Debug interface with open-drain.

Pullup with R=1k to Vdd.

C11 VCCRF I - - RFSUPPLY input < 3.45V. Connect to VBAT if VBAT less than

3.45V. Else this pin must be supplied from and external 3.3V LDO.

Refer to Table 16 for supply requirements.

D1 GND -- -Ground

D2 PAOUTp IO 500 O-0 (5k

fixed

pull-

down)

CLASSD loudspeaker positive outputs

D3 PON I I (270k

fixed

pull-

down)

Power on, Switches on the device if Voltage > 1.5V.

May be directly connected to VBAT, also with Li-Ion batteries

Table 1: Pin description (Continued)

Pin Module

Pin name

In/

Out

Iout

Drive

(mA)

Reset

State Description

SC14CVMDECT Cordless Voice Module

D4 CHARGE I - I-PD

(270k

fixed

pull-

down)

Charger connected indication. Switches on the device if voltage >

1.5v. Must be connected to charger via resistor R>(Vcharger_max-

3V)/10 mA (round to next largest value in range).

If no charger used, Leave unconnected if not used.

Charger is currently not supported.

D5 GND -- -Ground

D6 GND -- -Ground

D7 GND -- -Ground

D8 GND -- -Ground

D9 P2[4]/SCL1/

PCM_DO

IO 8 I-PU I/O port

SCL1; I2C clock

PCM_DO: PCM Data output

D10 VDD O - - Digital Core supply voltage (1.8V TYP).

Output from internal regulator.

D11 P2[5]/PCM_FSC IO 8 I-PU I/O Port

PCM_FSC: PCM Frame Sync

E1 VDDPA I - - CLASSD Audio Amplifier supply voltage up to 3.45V.

E2 GND -- -Ground

E3 CHARGE_CTRL O - O-0 Charge control pin.

Leave unconnected if not used.

Charger is currently not supported.

E4 SOCn I - I Battery State Of Charge negative input. Star point connected to the

SOC resistor.

Charger is currently not supported: connect to GND

E5 GND -- -Ground

E6 GND -- -Ground

E7 GND -- -Ground

E8 GND -- -Ground

E9 GND -- -Ground

E10 P0[7] / SPI_DI IO 8 I-PU I/O Port

SPI Data Input

E11 GND -- -Ground

F1 SOCp I - I Battery State of charge positive input.

Charger is currently not supported: connect to GND

F2 P1[0]/INT0/ADC1 IO 2 I-PU I/O Port

INT0: Interrupt 0

ADC1; ADC input 1

F3 ADC2/NTC I - I ADC2

NTC protection input for Li-Ion charger circuit.

Charger is currently not supported: connect to GND

F4 NC - - - leave unconnected

F5 ULP_PORT I - I Ultra Low Power Port Pin

Ultra low power is not supported by the software, connect to gnd.

F6 ULP_VBAT I - I Ultra Low Power Supply Pin

Ultra low power is not supported by the software, connect to gnd.

Table 1: Pin description (Continued)

Pin Module

Pin name

In/

Out

Iout

Drive

(mA)

Reset

State Description

SC14CVMDECT Cordless Voice Module

F7 ULP_MAIN_CTR

- I-0 Ultra Low Power Main Control

Ultra low power is not supported by the software, connect to gnd.

F8 NC - - - RF pad, must be left unconnected

F9 P2[3]/SDA1 /

PCM_DI

IO 8 I-PU I/O Port

SDA1: I2C Data

PCM_DI: PCM Data input

F10 P1[3]/INT3 IO 1/2 I-PD I/O Port

INT3: Interrupt

F11 P0[6] / SPI_DO IO 8 I-PU I/O Port

SPI Data Out

G1 GND -- -Ground

G2 LSRn O - O Negative loudspeaker output

G3 GND -- -Ground

G4 P3[3]/ADC0 IO 8 I I/O Port

ADC0; ADC input 0

G5 GND -- -Ground

G6 NC - - - leave unconnected

G7 GND -- -Ground

G8 NC - - - leave unconnected

G9 GND -- -Ground

G10 GND -- -Ground

G11 GND -- -Ground

H1 VREFM - Negative microphone reference (star point), connect to gnd.

H2 LSRp O - O Positive loudspeaker output

H3 P3[7]/RINGp IO 4 I I/O Port

RINGp: Ringer detection input

H4 NC - - -

H5 GND - - I Ground

H6 GND - - I Ground

H7 P2[2]/PCM_CLK I/O 8 I-PD I/O Port

PCM_CLK: PCM clock input/output

H8 NC - - - RF pad, must be left unconnected

H9 GND -- -Ground

H10 GND -- -Ground

H11 GND -- -Ground

J1 GND -- -Ground

J2 MICh I - I Headset microphone input with fixed input protection

J3 GND -- -Ground

J4 P3[5]/RINGING /

RINGOUT

IO 4 I I/O Port

RINGING: Ring detection Input

RINGOUT: -

J5 GND -- -Ground

J6 NC - - - RF pad, must be left unconnected

Table 1: Pin description (Continued)

Pin Module

Pin name

In/

Out

Iout

Drive

(mA)

Reset

State Description

SC14CVMDECT Cordless Voice Module

• “NC” means: leave unconnected.

•GND means internally connected to Ground plane of

module (51 pins in total)

• GND means connect to Ground (not supported,

functional pin)

Reset States:

• I = Input

• O= Output

• I-PD = Input, pulled down

• I-PU = Input, pulled up

• O-0 = Output, low

• O-1 = Output, high

J7 GND -- -Ground

J8 P2[1] / PWM1 /

LED4

IO 8 I I/O Port

PWM1: Pulse Width Modulation output

LED4: 2.5/5mA LED current sink

J9 GND -- -Ground

J10 GND -- -Ground

J11 GND -- -Ground

K1 VREFp O - I Positive microphone supply voltage

K2 MICp I - I Positive microphone input

K3 P3[2]/CIDINp IO 8 I I/O Port

CIDINp: Caller id opamps positive input

K4 P3[6]/RINGn IO 3 I I/O Port

RINGn: RING opamp negative input

K5 P3[4]/PARADET IO 8 I I/O Port

PARADET: Parallel set detection

K6 NC - - - leave unconnected

K7 NC - - - leave unconnected

K8 P2[0]/ PWM0 /

LED3

IO 8 I I/O Port

PWM0: -

LED3: 2.5/5mA LED current sink

K9 GND -- -Ground

K10 NC - - - No ground under the pad (RF sensitive)

K11 NC - - - No ground under the pad (RF sensitive)

L1 GND -- -Ground

L2 MICn I - I Negative handset microphone input

L3 GND -- -Ground

L4 GND -- -Ground

L5 NC - - - RF pad, must be left unconnected

L6 GND -- -Ground

L7 GND -- -Ground

L8 NC - - - leave unconnected

L9 GND -- -Ground

L10 NC - - - No ground under the pad (RF sensitive)

L11 GND -- -Ground

M2 NC - - - RF pad, no pad on PCB

Table 1: Pin description (Continued)

Pin Module

Pin name

In/

Out

Iout

Drive

(mA)

Reset

State Description

SC14CVMDECT Cordless Voice Module

2.0 Introduction

2.1 SCOPE

The SC14CVMDECT is a programmable DECT

module for voice and low data rate services. The

internal software-stack receives commands and data

from the application, for instance to setup a link to

other modules. The user interface can be implemented

on the module itself or on anexternal host processor.

The internal FLASH provides user space where

custom applications can be located. The module

converts analog signals to a digital stream,

compresses/decompresses them according to the

DECT standards and transmits/receives them over the

air interface. The DECT protocol-stack in each module

supports both PP and FP functionality.

2.2 ORDERING INFORMATION

SC14CVMDECT AF01

2.3 REFERENCES

1. SC14CVMDECT AT Commands

2. SC14CVMDECT AT Commands

Communication Library

3. SC14CVMDECT_PC_MMI_User_Guide

4. Athena User Manual

2.4 GLOSSARY AND DEFINITIONS

API Application Programming Interface

AT Command Interface

The software interface between the

MCU and SC14CVMDECT

CAT iq Cordless Advanced Technology, Internet

and Quality

Codec Coder and DeCoder converts analog

signals to digital signals and vice versa.

Conference Same as intercom, but generally

including an external party.

CRC Cyclic Redundancy Check

CVM Cordless Voice Module

DECT Digital Enhanced Cordless Telephone

DSP Digital Signal Processor

EC Echo Canceller

EMC Equipment Manufacturer’s Code (please

refer to ETSI EN 300 175-6)

ESD Electro Static Discharge

EQ Equalizer

FP Fixed Part

GFSK Gaussian Frequency Shift Keying

HW Hardware

Inband tones Tones played by the application itself

and not from external e.g. line.

Intercom Internal call between 2 or more parties.

IPEI International Portable Equipment Identity

(please refer to ETSI EN 300 175-6)

IWU InterWorking Unit (please refer to ETSI

EN 300 175-1)

LCD Liquid Crystal Display

LDR Low Data Rate

MCU Micro Controller Unit

MMI Man Machine Interface (keypad, LCD,

buzzer, microphone, earpiece, speaker,

headset)

NTP Nominal Transmit Power

PAEC Perceptual Acoustic Echo Canceller

PC Personal Computer, IBM compatible

PCB Printed Circuit Board without

components

PP Portable Part

PSTN Public Switched Telephone Network

POTS Plain Old Telephone System

RF Radio Frequency

RFPI Radio Fixed Part Identity (please refer to

ETSI EN 300 175-6)

RLR Receive Loudness Rating

RSSI Radio Signal Strength Indication (please

refer to ETSI EN 300 175-1)

Sidetone Feedback of microphone signal to

earpiece.

SLR Sending Loudness Rating

SPI Serial Periphelal Interface Bus

SW Software

UART Universal Asynchronous Receiver and

Transmitter.

VAD Voice Activity Detection

Walky Talky Two PPs connected without an FP

SC14CVMDECT Cordless Voice Module

3.0 Cordless Voice Module

functionality

This section describes the key functions and features

supported by the SC14CVMDECT as shown in Figure

3.1 MODULE HARDWARE

The SC14CVMDECT internal hardware consist of:

• An Internal Microprocessor (MCU) running from

FLASH handling the AT command interpreter, the

protocol stack and further internal control.

• A 4kByte EEPROM used by the protocol stack and

for user EEPROM variables.

• A DSP for the Audio signal processing like ADPCM

voice compression towards the Codecs.

• A codec to convert the analog signals to digital

signals and vise versa.

• Input/Output ports which can be toggled high/low if

output or a high/low digital level can be read.

• A 10.368 MHz XTAL clock. This crystal is

automatically tuned by the module software for the

best Radio Performance.

• Voltage regulators to convert the external supply

voltage to a stable supply voltages for the core and

I/O’s.

• A DECT Radio transceiver with two built-in antenna

circuits. The antenna’s are on the module, so no RF

knowledge is required.

• A UART for communication to a host.

3.2 SOFTWARE CONTROL

The SC14CVMDECT can be controlled via an AT

Command Set over the UART interface or from the

internal user application. The external controller

handles the user interface (MMI) and sends/receives

AT commands and responses to the internal protocol

stack. A detailed functional and data flow description,

including an example of the start-up sequence, can be

found in document reference [1].

3.3 DECT PROTOCOL STACK

The SC14CVMDECT internal protocol stack is based

on the ETSI DECT specifications and is compliant with

ETSI 300 444 (GAP).

The product supports up to 6 DECT GAP compliant PP

units to one FP station.

Figure 2 SC14CVMDECT functional overview

UART interface

to host

AT commands

AT command

interpreter

Radio

Protocol

Stack DSP

Ports

DECT

EEPROM XTAL

FLASH

Codec

User

MIC

LSR

Headset Control

UART

SPI

SC14CVMDECT Cordless Voice Module

3.4 PORTABLE PART CONFIGURATION

A Portable Part configuration with SC14CVMDECT

requires additional external parts as shown in Figure 3. .

Table 2 provides the overview of the supported

interfaces for a Portal Part.

A portable part supports following main functional

features:

•Conferencing (currently not supported*)

•Intercom

•Battery management (currently not supported*)

•Custom Ringtones (currently not supported*)

•Earpiece, handsfree and headset.

•Automatic headset detection (currently not

supported*)

•Baby monitor (currently no VAD support*)

Figure 3 PP Configurations

SC14CVMDECT

(optional)

Loudspeaker

MIC2

Earpiece

MCU (handset speaker)

Headset

UART

Ports PCM

(optional)

Table 2: PP Hardware support overview

Item Supported Remark

Battery connection No Non rechargeable or rechargeable 2 cells NiMH, NiCd or Li-Ion

For Li-Ion an 3.3V LDO is required to supply the system.

Battery charger No Use external charger.

Keypad No on external MCU

Display No on external MCU

IO Ports Yes 4 free digital IO port pins

PCM interface Yes 1x16 bits, 8,16 kHz, strobes 1,8, 16, 32 bits

PCM voice coding

formats

Yes uLaw (64kbits/s), Alaw (64kbits/s), G.726 ADPCM (32kbits/s), G.722

ADPCM (64kbits/s), Linear (128kbits/s)

UART Yes 9600-115.2kbaud, used for AT-command

Headset detection Yes

Headset earpiece Yes Connected to LSRp,LSRn

Headset Microphone Yes Connected to MICp

Handsfree Microphone Yes Connected to MICh

Handsfree speaker Yes Connected to PAOUTP/n (No SW support)

Radio Yes Integrated with two antenna’s

SC14CVMDECT Cordless Voice Module

•PCM interface (one channel)

•Walky Talky mode (currently not supported*)

•Low Speed Data (1.6kbit)

•LU10 data channel (54kbit/sec) (Currently not

supported*)

* Expected in Q2 2012

SC14CVMDECT Cordless Voice Module

3.5 FIXED PART CONFIGURATION

A Fixed Part configuration with SC14CVMDECT

requires additional external parts as shown in Figure 4. .

Table 3 provides the overview of required and

available interfaces for a basic or a feature rich

cordless FP with the SC14CVMDECT. .

A fixed part supports following main functional

features:

•Conferencing (currently not supported*)

•Intercom

•Custom Ringtones (currently not supported*)

•Earpiece, handsfree and headset.

•Automatic headset detection (currently not

supported*)

Figure 4 FP Configuration

SC14CVMDECT

(supported in future versions)

(optional)

Loudspeaker

MIC2

Earpiece

MCU (handset speaker)

Supply

Ports

Headset

Regulator

PCM

Analog frontend

can be used for

PSTN line interface

UART

(optional)

Table 3: FP Hardware support overview

Item Supported Remark

Supply Regulator No Use external 3.3V LDO.

Keypad No on external MCU

Display No on external MCU

IO Ports Yes 4 free port pins

PCM interface Yes 4x16 bits, 8,16 kHz, strobes 1,8, 16, 32 bits

PCM voice coding

formats

Yes uLaw (64kbits/s), Alaw (64kbits/s), G.726 ADPCM (32kbits/s), G.722

ADPCM (64kbits/s), Linear (128kbits/s)

UART Yes 9600-115.2kbaud, used for AT-command

Headset detection Yes

Headset earpiece Yes Connected to LSRp,LSRn

Headset Microphone Yes Connected to MICp

Handsfree Microphone Yes Connected to MICh

Handsfree speaker Yes Connected to PAOUTP/n (No SW support)

PSTN Line interface Yes CID, Ring detection, Line-in, Linout, Line reversal, paralle set detection

(SW On request)

Radio Yes Integrated with two antenna’s

SC14CVMDECT Cordless Voice Module

•Baby Monitor (currently not supported*)

•PCM interface (4 channels)

•Low Speed Data (1.6kbit)

•LU10 data channel (54kbit/sec) (Currently not

supported*)

•Base Station For Sensor applications (Currently not

supported*)

* Expected in Q2 2012

SC14CVMDECT Cordless Voice Module

3.6 LIGHT DATA APPLICATION

The SC14CVMDECT supports Low Data Rate (LDR)

transmission up to 1.6 kbits/s. Packets with a length of

upto 30 bytes payload can be transmitted and

received.

One SC14CVMDECT is configured as FP and the

others are configured as PPs (Figure 5). The host

sends/receives AT commands (over UART) to/from PP

or FP as shown in Table 4.

Up to six PPs can be registered to one FP.

See document reference [1] for more information on

the AT commands to support LDR.

Table 4: Low Data Services

Direction Supported Comment

Host to PP to FP Yes

Host to FP to PP Yes

PP to PP Yes Indirect via FP

Figure 5 Light Data application

1.6 kbits/s

SC14CVMDECT

SC14CVMDECT Cordless Voice Module

3.7 FUNCTIONAL OVERVIEW

Table 5: Functional overview

Functionality Sup-

ported Remark

Standard FP audio control feature: Call handling

PP to FP, FP to PP Yes

Intercom No PP to FP, FP to PP

Conference call No

Call forwarding No Transfer call between PPs not possible.

Page call Yes FP pages all PPs (PP locator)

Protocol

Manual registration Yes

Number of registered PPs per FP Yes 1 to 6

Low rate data transfer Yes 1.6 Kbit/s on the air-interface (30 bytes payload)

Audio and tone

Microphone mute Yes PP only. Mute of MIC in all audio connections are possible

Tone generation Yes Melody generator with 7 polyphonic tones

Audio Volume control Yes 6 steps are adjustable by EEPROM

Tone Volume control Yes 6 steps are adjustable by EEPROM

Headset support Yes

Handsfree/Speakerphone Yes PP only

General

Real time clock Yes Accuracy depending directly on crystal

Real time clock synchronization Yes All PP clocks are kept in synchronization with the FP

SW EEPROM Storage Yes Internal on Module

Battery Charge Management No

PSTN line interface support No PSTN software on Request

I/O port support Yes 4 pins I/O

Port Interrupt support No

SC14CVMDECT Cordless Voice Module

4.0 Functional description

4.1 UART INTERFACE

The UART isnormally used for AT commands, but can

also be used for software upgrades and debugging.

The UART is a full duplex UART with frame type: 1

start bit, 8 data bits (LSB first), 1 stop bit, no parity and

a baud rate of 115.200 kBaud

The UART hardware interface uses 3 wires

(see Figure 6) .

Caution: All signals are 1.8 V. An external V.24 line

driver must be provided if the UART port of the module

is connected to a standard V.24 device. Connecting

the module without a driver may damage the module.

4.2 EEPROM

4.2.1 EEPROM layout

The SC14CVMDECT PP and FP include a 4 Kbyte

EEPROM which is divided into two areas (see Table

6).

A detailed overview of the EEPROM parameter is

found in document reference [2].

Some parts of the EEPROM parameters are read into

the SC14CVMDECT during the start up and other parts

are used by the SC14CVMDECT software during

execution.

The EEPROM parameters are divided into 2 types:

• Factory type

• normal type.

The factory type is specific for the SC14CVMDECT

and should only be set by production. The factory types

are either parameters for adjustments used by the

baseband or the radio interface, or is used to setup the

SC14CVMDECT into special modes. The factory types

will only be modified by changing the factory

programmed default value. See document reference

[2]. Only users with “debug” authorization can modify

these EEPROM parameters

The other “normal” EEPROM parameters can be reset

to default values by running a soft default setting

(default batch file).

4.2.2 EEPROM access by MCU

The host is able to read or modify the EEPROM

parameters or limited free EEPROM areas via AT

commands AT+WEExx.

Access to the EEPROM parameters depends on the

authorization level set by the AT+WULA parameter:

0 = Anonymous User with Lowest Authority (not able to

read from and write to EEPROM)

1 = Power User. Able to read from all EEPROM

locations and write to locations 0x0F00..0x0FBF (user

space). Password: 748357.

2 = Debug User Highest Authority.Able to read from

and write to EEPROM (audio and stack related

parameters. Contact SiTel Semiconductor for the

password.

Figure 6 UART hardware configuration

Table 6: EEPROM map

EEPROM space Size Usage

SC14CVMDECT 3.6 Kbyte Used for RF, audio,

battery, tone setup,

data base, etc.

User 0.4 Kbyte. Can be used for

MMI applications

such as User

information.

SC14CVMDECT Cordless Voice Module

4.3 PP AUDIO CONFIGURATIONS

The SC14CVMDECT audio is supporting standard

DECT audio qualities. The audio gain and volume

parameters are placed in the EEPROM. The DECT

gains can be adjusted to meet the TBR38 and TBR10

audio level requirements by using the SC14CVMDECT

application reference design. For other line and

acoustic designs it is needed to adjust and tune the

audio setup.

4.3.1 Audio connection

The SC14CVMDECT PP audio connections are show

in Figure 7. Refer to “Example Application Diagram” on

page 38 for detailed component values.

Earpiece or small loudspeaker connection

The earpiece loudspeaker can be connected either

differentially or single-ended. Dynamic loudspeakers

with an impedance of 30  can be connected as well

as ceramic loudspeakers equivalent to 600  and

30 F can be connected. Refer to Table 11 for a

detailed specification or the earpiece loudspeakers.

The earpiece is connected to the LSRp and LSRn pins.

Microphone connection

The microphone can be connected either single-ended

via MICp or differentially to MICp and MICn

Headset connection

The headset microphone must be connected to the

MICh pin. The headset earpiece is connected to the

LSRp.

Microphone supply connection

For active microphones a voltage source with high

supply voltage rejection ratio is provided on supply pins

VREFp/VREFm. Filtering of internal and external

reference voltages is provided with internal capacitor.

No external capacitor shall be connected to the

VREFp. To avoid audible switching noise it is important

that the ground supply signals are directly “star point”

connected to the VREFm and not via a common

ground plane. From this VREFm star point, one

connection is made to the common ground plane.

Loudspeaker connection (supported in future

releases)

For the handsfree operation an 4 ohm loudspeaker

must be connected to the PAOUTp and PAOUTn pins

as shown in Figure 8. The VDDPA is the supply pin.

Refer to Table 12 for a detailed specification of the

external components around the loudspeaker. These

components are necessary to guarantee lifetime of the

module.

Figure 7 Audio connections

LSRn

LSRp

MICh

MICn

VREFm

MICp

VREFp

Figure 8 Loudspeaker connection

PAOUTp

PAOUTn

VDDPA

VSS/GND

C_VDDPA

Cs_PAOUT

Rs_PAOUT

Cs_PAOUT

Rs_PAOUT

SC14CVMDECT Cordless Voice Module

4.3.2 Audio Modes

The PP audio handling consists of four audio states. In

these states the audio subsystem is configured for a

certain audio mode:

1. Idle state (not relevant for microphone

configuration)

2. Earpiece Mode (Handset Speaker)

3. Handsfree or Speakerphone Mode

4. Headset mode

Selection between the modes is done by API calls; see

document reference [1].

The Alert state is for tone playing and is entered

automatically when tones are played using the API

calls. The Alert state can originate from idle earpiece,

handsfree or headset state

Figure 9 PP Audio mode

SC14CVMDECT Cordless Voice Module

4.3.3 PP Audio Codec adjustment

The audio codec settings for the loudspeaker and

Microphone must be preconfigured in the EEPROM for

each mode. The EEPROM parameter fields for

Audio.Earp.xxx, the Audio.Heads.xxx and

Audio.SpkPh.xxx have a default value but may be

modified to tune the settings.

4.3.4 General Audio adjustment

For each audio mode, the receive (RLR) and transmit

(SLR) audio paths must be adjusted. RLR and SLR are

adjusted in the registers in the EEPROM for each

audio state; see document reference [2].

4.3.5 Power management

To minimize the current consumption the PP will

shutdown all codec amplifiers in Idle state. This means

that all reference voltages in the front-end will be

disabled. This feature can be disabled in the EEPROM

if the reference voltages for some reasons are needed

in Idle state.

4.3.6 Earpiece Mode

In Earpiece mode (Handset Speaker) an artificial

sidetone is generated. The level of the sidetone can be

adjusted and setup in the EEPROM through parameter

fields Audio.Earp.Vol.Elementx,SideToneGain and

Audio.Heads.Elementx.SideToneGain. In Earpiece

mode it is possible to adjust the volume in the Earpiece

via the API calls. In Earpiece mode the PP audio is

routed as shown in Figure 11.

4.3.7 Alert mode

The Alert mode is for generating tone and melodies in

the Speakerphone loudspeaker. In Alert mode it is

possible to adjust the volume in the speaker via the

API calls.

4.3.8 PP Volume

The PP supports 6 volume steps, which are EEPROM

configurable through parameter fields

Audio.Earp.Vol.xxx, the Audio.Heads.Vol.xxx and

Audio.SpkPh.Vol.xxx. The volume steps must be set

initially in the EEPROM during production.

Inband tones will be affected by the volume

adjustments, since the volume control is placed after

tones are added to the signal..Figure 11 shows the

Audio flow. Here is the list of main functions:

EQ Equalizer

nc100Hz 100Hz canceller

Sidetone Sidetone

EC Echo Canceller

Vol. Ctrl Volume Control

Tonegen Tone generator

Figure 10 Handset Volume Configuration

SC14CVMDECT Cordless Voice Module

4.3.9 PP Audio equalization

To enable adjustments of the frequency response the

PP contains four programmable filters: 2 in RX

direction and 2 in TX direction (see Figure 11).

By default these filters are loaded with bypass

coefficients, but the API contains commands to load

new coefficient for all filters.

Equalizer filters are part of the audio routes for all

audio modes and are placed as shown in Figure 11.

For a detailed description of the filter functionality

please refer to API documentation; see document

reference [1].

4.4 CALL HANDLING

4.4.1 FP to PP Call

When the FP initializes a call to a PP, a radio

connection is set up to all the PP applications to make

it possible for the PP Application Software to indicate

that there is an incoming call.

It is possible to configure the ringing indication using

broadcast to make all 6 PPs ringing. When receiving

the call, the PP signals the call to the MMI Software.

4.4.2 PP to FP Call

When the MMI Software signals the PP to establish a

call, the PP opens the radio connection to the FP.

4.4.3 Intercom and Conference

Not supported.

4.4.4 Call Transfer

Call transfers are not supported.

4.4.5 Page Call

The Page call is a FP functionality used to locate the

registered PPs. FP paging does not establish a normal

audio connection and is terminated when answered by

the PP. In FP Speakerphone mode a voice call can be

established when the paging is answered.

4.4.6 Connection scenarios

The following voice connections are supported.

• PP to FP

• FP to PP.

4.5 TONE/MELODY HANDLING

The tone component handles the generation of various

tones in the device. Both tones/melodies in a FP and

PP configuration are supported. Main features of the

tone component are:

The main features of the tone component are:

• Ringer tones and melodies (7 tone polyphonic)

• Alert tones (key sound, error tones, confirmation

tones, etc.)

• Inband tones (dial tone, net-congestion tone, busy

tone, etc.)

• Single tone generation

4.6 DATE AND REAL-TIME CLOCK

The FP base has a real-time clock feature, which

(when activated) broadcasts the date and clock to the

PPs. Activation of the date and real-time clock is done

by setting the date and clock via the PP.

The clock is with hours, minutes and date. The clock

supports the leap year. Daylight saving is not

supported and must be handled by the MMI

application.

The PP clock is synchronized with the FP every time a

broadcast is received. If the PP goes out-of-lock, the

PP itself calculates the clock until the PP is again

within the range of the FP. The updated clock can then

Figure 11 PP Audio Routing

EQ nc100Hz

Vol.

ctrl

tonegen

Rx_in

Tx_out

Sidetone

SC14CVMDECT Cordless Voice Module

be read locally from the MMI Software.

To adjust the clock in the base station, a service

connection can be setup which can be set by

commands from the PP.

The clock can also be read and set directly from an

external microprocessor or through the MMI software

on the FP base.

The real-time clock accuracy depends directly on the

SC14CVMDECT crystal.

When the SC14CVMDECT is configured as a PP, the

clock has the same accuracy as the FP clock. But,

when the PP synchronises with a FP, the PP crystal is

synchronized with the FP crystal and the PP clock will

change accordingly.

The accuracy is expected to be within 1 minute for up

to 6 weeks without being locked to a FP.

Figure 12 Clock synchronization

SC14CVMDECT Cordless Voice Module

4.7 PROTOCOL STACK

The protocol stack handles the RF interface. For the

SC14CVMDECT the DECT TDMA is used. The

protocol features encryption.

4.7.1 DECT TBR22

The SC14CVMDECT protocol supports the DECT GAP

standard. DECT TBR22 GAP type approval however is

optional.

To pass a GAP type approval, a disable of the PP

authentication and encryption during conversation is

needed for some TBR22 test cases (DLC test cases).

This can be done via EEPROM address 0x00F0.

4.7.2 Out-of-Range handling

When the PP goes in-range or out-of-range a signal is

sent from the PP to the MMI Software indicating

whether the PP is in-lock or is out-of-lock with the FP.

4.7.3 Pre-amble Antenna diversity

To optimize the audio quality caused by rapid changing

radio paths (fading), the SC14CVMDECT supports

pre-amble antenna diversity. The pre-amble diversity

algorithm uses RSSI measurements to judge the radio

signal strength on both antennas and, as a result of it,

the choice of the best performing antenna is

determined. The antenna will be used for the receive

slot and the next transmit slot.

The pre-amble antenna diversity is supported by

default. The pre-amble diversity can be disabled by

EEPROM to let the SC14CVMDECT support a single

antenna. See document reference [2].

In general an FP uses diversity and a PP does not.

4.7.4 Low Speed Data

During a voice call or using a service call, data can be

transferred at a rate of about 1.6 Kbit/s using IWU to

IWU messaging.

Figure 13 Low Speed Data Scenario

SC14CVMDECT Cordless Voice Module

The following data connections are supported:

• PP to PP (point to point)

• FP to PP, PP to FP

• PP to all PPs (broadcast)

• FP to all PPs (broadcast)

All communication is routed via the FP. The FP has

number #6. See Figure 14.

4.7.5 Broadcasting messages

The broadcast message is 19 bytes at a time and can

real-time clock from the FP to the PP when the real-

time clock is activated.

When broadcasting data no active connections are

established.

The data is transmitted from the FP and received by

any registered PP. The communication is only one

way. Therefore, the broadcast data is not secured

because there is no retransmission.

If the PP does not receive it right the first time, the

broadcast data is lost.

4.7.6 IWU to IWU messaging

The protocol in the SC14CVMDECT module is made

according to the DECT/GAP standard as defined in

EN 300 175 and EN 300 444.

The DECT standard defines an EMC code (see

EN 300 175-5, chapter 7.7.23.). This code is unique for

a DECT product and must be programmed by the

DECT manufacturer to the correct manufacturer code.

The EMC code must be the same for SC14CVMDECT

based product families when using the IWU to IWU

messaging.

If the SiTel default EMC EEPROM value is changed

the IWU to IWU messaging may not operate correctly.

IWU data is transferred in a FA format frame; see

chapter 6.1 in EN 300 175-4. This frame has an

information field of maximum 63 bytes of which

maximum 52 bytes can be used for IWU data. With the

SC14CVMDECT it is only possible to send 5 frames in

a row without pause. The following frame must be an

acknowledge-frame to secure that the internal buffers

within the SC14CVMDECT are emptied.

The FA frame is segmented in 5 bytes fragments and

transferred over the air-interface in the A-field. The 2-

bytes CRC is used to determine if the data is received

correct. If the data is not received correct this is

signalled back to the transmitter by the Q2 bit, and the

data is retransmitted.

The FA frame has a 2 bytes checksum, used to

determine if the complete packet is received correct. If

A checksum error is signalled back to the transmitter

and the complete packet is retransmitted. The packet

will re-transmit until it is received correctly, or the link is

closed.

More transmitted packets will be received in the same

order as they were transmitted. The application must

handle flow control, if needed.

4.8 REGISTRATION

The PP and the FP must be paired using a procedure

called Registration. Without Registration, the PP will be

out-of-lock and will not be able to establish a link to a

FP and therefore not be able to make a call. The

registration uses the unique product identities and

secures the PP and FP to allow no cross-

communication. To avoid cross-communication it is

very important that all the PPs and the FP use an

unique numbering scheme.

The PP can be deregistered from a FP either via the

FP or PP MMI Software using the command interface.

It is also possible to deregister a PP from another

registered PP.

It is possible to pair a PP and FP during the production.

4.8.1 Handling product identities

To secure that the FP and PPs do not make cross-

communications a unique ID must be entered into the

EEPROM of an FP or PP. For the DECT version the ID

for the FP is named RFPI and for the PP the ID is

named IPEI. These numbers are factory settings.

After a successful registration, the IPEI is stored in the

FP and the RFPI is stored in the PP. In this way the two

parts are known to each other and are allowed to make

connections. The registration data are automatically

stored in EEPROM of the FP and PP while making the

registration.

It is possible to register the same PP to 2 FPs, but it

can only be used in one FP at the same time.

Figure 14 Data connection PP0 to PP1 or all

SC14CVMDECT Cordless Voice Module

4.8.2 Deregistration

There are two ways of deregistering a PP from an FP:

• Remote FP and PP deregistration

The correct way to deregister a PP from an FP is to

deregister it remotely in the FP. If this is done over a

service connection from the PP to the FP, the FP

actually performs the deregistration and then it is

automatically signalled to the PP which in turn will

drop out- of-lock. Using this method it is also

possible to deregister other PPs registered to the FP

from one PP.

Removing all registration at once from the FP (e.g. in

case the original PPs are lost).

4.9 PCM INTERFACE

The audio is routed between the MCU and the CVM via

the PCM bus. The MCU is responsible for selection

and enabling of the audio path between the PCM bus

and the CVM when calls to the external line are

established. This is done with AT commands.

The CVM is responsible for connecting the right PCM

channel to the right handset for external calls when the

audio path between the CVM and the handset is

opened.

The physical PCM interface formats are illustrated in

the figures in this section.

The CVM supports the following PCM data formats

Linear PCM, 8 kHz sample rate.Used for narrowband

calls (G.726).

Linear PCM, 16 kHz sample rate.Used for wideband

calls (G.722).

G.711 – A-law, 8 kHz sample rate.Used for

narrowband calls (G.726).

G.711 – u-law, 8 kHz sample rate.Used for narrowband

calls (G.726).

• Compressed wideband using A-law, 16 kHz sample

rate.

The 16 bit PCM data is encoded as two 8 bit audio

samples if 8 kHz frame sync is used. Used for

wideband calls (G.722).

• Compressed wideband using u-law, 16 kHz sample

rate.

The 16 bit PCM data is encoded as two 8 bit audio

samples if 8 kHz frame sync is used. Used for

wideband calls (G.722).

Synchronization modes

In slave mode the PCM interface can be configured for

the following synchronization modes:

• Asynchronous system clock: In this mode the clock

of the module is not synchronized to the PCM clock.

This means that audio samples will be either

discarded in case the master PCM clock is faster

than the clock of the module or samples will be

repeated in case the master PCM clock is slower.

• Synchronous system clock: In this mode the clock of

the module will be adjusted to follow the PCM clock

provided by the master. In this case all audio

samples will be kept if the provided PCM clock has

an accuracy of +/- 5ppm which is a DECT radio

requirement.

Figure 15 Handling Product Identities

SC14CVMDECT Cordless Voice Module

The MCU must make sure that the PCM data format

matches the CODEC selected for the call. Modifying

the CODEC requires the PCM data format to be

changed too. The following figures illustrate the PCM

bus with different PCM data formats (PCM CODEC’s).

Figure 16 PCM Interface Formats

SC14CVMDECT Cordless Voice Module

Figure 17 PCM bus with linear PCM, 8kHz sample rate

PCM CLK

8 KHz FSC

PCM in

PCM out

Channel 0

Channel 1

Channel 0

Channel 1

AP_DATA_FORMAT_LINEAR_8kHz with 8 kHz frame sync:

1st fram e 2nd fram e1st

fram e

1st fram e 1st

fram e

2nd fram e

2nd fram e 2nd fram e

PCM CLK

16 KHz FSC

PCM in

PCM out

Channel 0

Channel 1

Channel 1 Channel 0 Channel 1

1st fram e 1st fram e

AP_DATA_FORMAT_LINEAR_8kHz with 16 kHz frame sync:

1st fram e 1st fram e

Channel 0 Channel 1

1st fram e 1st fram e

Figure 18 PCM bus with linear PCM, 16kHz sample rate

PCM CLK

16 KHz FSC

PCM in

PCM out

Channel 0

Channel 1

Channel 0

Channel 1

1st frame 2nd frame1st frame

1st frame 1st frame

2nd frame

2nd frame 2nd frame

AP_DATA_FORMAT_LINEAR_16kHz with 16 kHz frame sync:

SC14CVMDECT Cordless Voice Module

Figure 19 PCM bus with G.711 – A-law/u-law, 8 kHz sample rate

PCM CLK

8 KHz FSC

PCM in

PCM out

Channel 0

Channel 1

Channel 0

Channel 1

AP_DATA_FORMAT_G711A / AP_DATA_FORMAT_G711U with 8 kHz frame sync:

1st frame

2nd frame

1st frame

2nd frame

PCM CLK

16 KHz FSC

PCM in

PCM out

Channel 0

Channel 1

Channel 1 Channel 0 Channel 1

AP_DATA_FORMAT_G711A / AP_DATA_FORMAT_G711U with 16 kHz frame sync:

1st frame

1st frame 1st frame 1st frame

Channel 0 Channel 1

1st frame 1st frame

Figure 20 PCM bus with compressed wideband using A-law/ u-law, G722 used on air interface.

PCM CLK

16 KHz FSC

PCM in

PCM out

Channel 0

Channel 1

Channel 0

Channel 1

AP_DATA_FORMAT_CWB_ALAW / AP_DATA_FORMAT_CWB_ULAW with 16 kHz frame sync (G.722 used on air):

1st frame

2nd frame

PCM CLK

8 KHz FSC

PCM in

PCM out

Channel 0

Channel 1

Channel 0

Channel 1

Channel 0

Channel 1

Channel 0

Channel 1

AP_DATA_FORMAT_CWB_ALAW / AP_DATA_FORMAT_CWB_ULAW with 8 kHz frame sync (G.722 used on air):

1st frame

2nd frame

1st frame

2nd frame

3rd frame4th frame 3rd frame4th frame

4th frame 3rd frame4th frame3rd frame

SC14CVMDECT Cordless Voice Module

Figure 21 PCM bus with compressed wideband using A-law/ ?-law, G726 used on air interface.

PCM CLK

16 KHz FSC

PCM in

PCM out

Channel 0

Channel 1

Channel 0

Channel 1

AP_DATA_FORMAT_CWB_ALAW / AP_DATA_FORMAT_CWB_ULAW with 16 kHz frame sync (G.726 on air):

1st frame

PCM CLK

8 KHz FSC

PCM in

PCM out

Channel 0

Channel 1

Channel 0

Channel 1

Channel 0

Channel 1

Channel 0

Channel 1

AP_DATA_FORMAT_CWB_ALAW / AP_DATA_FORMAT_CWB_ULAW with 8 kHz frame sync (G.726 on air):

1st frame

2nd frame

1st frame

2nd frame

1st frame

SC14CVMDECT Cordless Voice Module

5.0 CAT-iq

5.1 INTRODUCTION

CAT-iq stands for Cordless Advanced Technology,

Internet and Quality. It is the new global technology

initiative from the DECT Forum, designed for IP-voice

services in the next generation networks. CAT-iq is

based on the regulatory framework of the mature and

reliable

DECT technology. It is fully backward compatible to

DECT GAP and, as the new cordless phone standard,

focuses on high quality Audio VoIP (wideband) as

well as low bit-rate data applications as the next

generation Cordless Phone standard.

5.2 CAT-IQ PROFILE OVERVIEW

The CAT-iq profiles are split between voice and data

services, with CAT-iq 1.0 and CAT-iq 2.0 providing

features to support key voice enhancements, and CAT-

iq 3.0 and CAT-iq 4.0 providing features to support

data. Each profile has a corresponding ETSI

specification, the organization where the technical

experts have realized the requirements as defined for

each profile by the DECT Forum.

5.2.1 CAT-iq 1.0

• Narrowband (G.726) and wideband (G.722) audio

and switching between these two codecs is

supported.

• CLIP, CNIP, CLIR: Calling Line Identification

Presentation, Calling Name Identification, Calling

Line Identity Restriction for internal and external

calls.

5.2.2 CAT-iq 2.0 (Supported in future releases)

• Synchronization of call lists and telephone books,

missed calls list, incoming accepted calls list,

internal names list (unique identifier of each

handset), base telephone book

• Synchronization of system settings: PPs are enabled

to change partly the configuration of the system

consisting of FP and PPs, these system settings are

handled using the list access method. Using this

method, the FP and the PPs support:

• Synchronization of time and date for FP and PPs,

that FP is enabled to transmit time and date to the

PPs.

• Reset to factory settings, means that PP is ena-

bled to reset the FP configuration to it’s factory

setting.

• Obtaining FP versions, means that a PP can

obtain the software release of the FP.

• Multiple lines handling: The behavior of DECT

systems connected to more than one network lines.

These lines may be of different types (VoIP and

PSTN for example). This feature details how calls

are placed in a multiple lines context. This feature

also impacts the behaviour of other services in order

to ensure attachment of PPs to a line, line settings

and several lists properly.

• Parallel calls: initiating a second call in parallel to the

first call, toggling between calls, putting a call on

hold, resuming calls from on hold, call transfer, 3-

party conference with established external and/or

internal calls

• DTMF and tones

• Headset support

• Easy PIN code registration

• Easy pairing

• handset location

SC14CVMDECT Cordless Voice Module

6.0 Specifications

6.1 ABSOLUTE MAXIMUM RATINGS

Note 1: Absolute maximum ratings are those values that may be applied for maximum 50 hours.

Beyond these values, damage to the device may occur.

Table 7: Absolute Maximum Ratings (Note 1)

Description Condition Min Max Unit

Maximum supply voltages:

VBAT 5.5 V

VBATT, VCCRF, VDDPA 3.6 V

VDDIO 2 V

Maximum voltage on pins:

PON 5.5 V

Port pins 2 V

LED4, LED3 3.6 V

ESD voltage

all pins human body model 2000 V

machine model 100 V

Table 8: Operating Conditions

Description Condition Min TYP Max Unit

Supply voltage:

VBAT 2.1 5.5 V

VBATT, VCCRF, VDDPA 2.1 3.45 V

VDD The module provides an

output voltage in this range

1.8 V

VDDIO 1.65 1.65 1.98 V

Voltage on pins:

PON pin 2.1 5.5 V

P2[0]/LED4, P2[1]/LED3 3.45 V

All other pins 2 V

Maximum Currents through pins

CHARGE pin Series resistor

R>(Vcharger-3)/10mA

10 mA

CLASSD pins 500 mA

VREFp 1mA

SC14CVMDECT Cordless Voice Module

6.2 DIGITAL INPUT LEVELS

6.3 DIGITAL OUTPUT LEVELS

6.4 LOUDSPEAKER LOAD CIRCUITS

Table 9: DIGITAL INPUT LEVELS

Description Condition Min Max Units

Logic 0 input level

all digital pads, except PON, CHARGE VDD=1.8V 0.3 x VDD V

PON 0.9 V

CHARGE 0.9 V

RSTn 0.2 x VDD V

Logic 1 input level

all digital pads, except PON, CHARGE VDD = 1.8 V 0.7 x VDD V

PON 1.5 V

CHARGE 1.5 V

RSTn 0.8xVDD V

Table 10: Digital Output Levels

Descriptions Conditions Min Max Units

Logic 0 output level

(For drive capability see pin description)

Iout = 2,4,8 mA

VDD = 1.8 V

0.2 x VDD V

Logic 1 output level Iout = 2,4,8 mA

VDD = 1.8 V

0.8 x VDD V

Table 11: LSRp/LSRn load circuits

PARAMETER DESCRIPTION CONDITIONS MIN TYP MAX UNITS

Cp1_Rl1_inf Load capacitance see Figure 22, RL1 = 30 pF

Cp1_Rl1_1k Load capacitance see Figure 22, RL1 k100 pF

Rl1 Load resistance 28 

Cp2 Parallel load

capacitance

see Figure 23 30 pF

Cs2 Serial load capacitance 30 F

Rl2 Load resistance 600 

Figure 22 Load circuit A Dynamic loudspeaker

RL1 Cp1

LSRp

LSRn

Figure 23 Load circuit B Piezo loudspeaker

Cs2

LSRp

LSRn

RL2

Cp2

SC14CVMDECT Cordless Voice Module

Table 12: PAOUTp, PAOUTn external components

PARAMETER DESCRIPTION CONDITIONS MIN TYP MAX UNITS

C_VDDPA Decoupling capacitor on

VDDPA

Required when Class-D is used

and guaranteed life time.

(see Figure 24)

1F

Cs_PAOUT Snubber capacitor (to

reduce ringing at

PAOUTp/n)

Required when Class-D is used

to prevent EMI and guaranteed

life time. (see Figure 24)

1nF

Rs_PAOUT Snubber resistor (to

reduce ringing at

PAOUTp/n)

Required when Class-D is used

to prevent EMI and guaranteed

life time. (see Figure 24)

1

Figure 24 Class-D external components

PAOUTp

PAOUTn

VDDPA

VSS/GND

May 10, 2010

C_VDDPA

Cs_PAOUT

Rs_PAOUT

Cs_PAOUT

Rs_PAOUT

SC14CVMDECT Cordless Voice Module

6.5 GENERAL SPECIFICATIONS

Note 2: The resulting range is very dependent of the mechanical design. SiTel is not responsible for this design and as such SiTel is not responsible

for the resulting range performance of the final product.

6.6 BASEBAND SPECIFICATIONS

6.7 RADIO PART (RF) SPECIFICATIONS

Table 13: SC14CVMDECT module

Item Condition Value Unit

Dimension l x w x h 25.0 x 29.0 x 2.9 mm

Weight 4.5 g

Temperature Range -20 to +60 °C

Frequency range According to DECT standard 1870 to 1930 MHz

Antenna Range According to DECT standard; (Note 2)

- typical outdoor 350 m

- typical indoor 75 m

Standard Compliancy ETS 300 444 (DECT GAP), former TBR2214

FCC part 15

Power supply 2 or 3 cell NiCd/NiMH

Note for 1 Li-Ion battery an external LDO is required.

2.10 to 3.45V V

Maximum PCB warpage For entire reflow range 0.1 mm

Table 14: Baseband specifications

Item Specification Min Typ Max Unit

Serial Interface baud rate UART; Interface for external

microprocessor or PC

115.2 kBits

Flash Download baud rate Via UART 115.2 kBits

Flash data space Module Flash 4kByte

EEPROM data space Module EEPROM 0.4 kByte

Analog front-end/Audio PP/FP Application: Interface for

Microphone, Earpiece, Headset

Power consumption

(charge)

FP Application (3.3V):

- stand by mode 55 60 mA

- talk mode 65 70 mA

PP Application (3.3V):

- stand by mode 4,5 6mA

- talk mode 30 40 mA

Table 15: Radio part (RF)

Item Conditions Min Typ Max Unit

Receive sensitivity @ BER = 0.001 -93 -92 -89 dBm

Receive IIP3 -20 dBm

SC14CVMDECT Cordless Voice Module

6.8 FP POWER SUPPLY

Transmit Power (NTP) DECT: 200 mW 20 23 25.5 dBm

DECT6.0: 115 mW (max peak) 18.5 21 24 dBm

TDMA (time division

multiple access)

6xRx + 6xTx time slots per carrier

Data rate 1.152 Mbits/s

Modulation depth DECT GFSK bandwidth = 20 dB < 1,728 MHz

Antenna diversity Two built-in antenna’s

Standard Compliancy ETS 301 406 (former TBR6)

Table 15: Radio part (RF)

Item Conditions Min Typ Max Unit

Table 16: Requirements for linear supply regulator

Parameter Description Condition Min Typ Max Unit

VCCRF Voltage at VCCRF Unloaded VB

Loaded VB-V1-V2-V3

2.1 3V 3.45 V

V1Settling time I = 50 mA 20 mV

V2Receive period I = 130 mA 100 mV

V2Transmit period I = 400 mA 200 mV

V3Drop during transmit 25 mV

Additional ripple (DC/DC) none none none mV

Figure 25 FP power supply

SC14CVMDECT Cordless Voice Module

7.0 Design guidelines

This section describes the software and hardware

considerations taken into account when designing the

target application.

The SC14CVMDECT can be used standalone or next

to an MCU that controls the module. In case the

module is used standalone the application will be

stored in its on-board Flash. In total 324kBytes of Flash

are available for this.

Applications can be written with the Athena software

development environment (see [4]).

7.1 APPLICATION SOFTWARE FOR PP

In a PP application the following software tasks must

be handled by the MCU or within the module itself:

• UART communication (external microprocessor

only)

• PP MMI

• Display interface (optional)

• Keyboard interface (optional)

• Battery Charge interface (optional)

• Audio handling

• Tone / Melodies handling

For control commands see document reference [1].

UART communication

The UART communication is the main control interface

of the SC14CVMDECT.

PP MMI

The MMI state machine must handle the call setup and

call termination on the PP.

Display Interface

The MCU / PP handles the display interface including

the display driver.

Keyboard Interface

The MCU/ PP handles the keyboard interface including

the keyboard driver.

Battery Charge handling

SC14CVMDECT V3 supports no battery management.

This must be done by and external charge circuit on

combination with the external MCU. The Application

Software must handle the MMI part such as battery

status for the user and the PP battery current

consumption states.

Audio handling

The Application Software state machine must control

when to open and close the audio. The headset plug-in

detection must handled by the host, and a status is

send to the PP MMI from the PP. The PP MMI must

handle the volume control.

Headset detection boundaries can be adjusted in

EEPROM. When headset indication is received from

the PP Headset detection logic (future release), the

Application Software can decide if audio should be

switched to the headset and sends a request to the

SC14CVMDECT.

The PP audio handling basically consists of 4 audio

states (see Figure 9):

1. Idle (Alert) State

2. Earpiece State

3. Handsfree State (Speakerphone)

4. Headset State

Shifting between states is done through the API.

Please refer to the PP application layout for pin

connections.

Tone handling

The Application Software state machine must control

when to play tones and the volume setting. Custom

melodies can be defined in the EEPROM.

7.2 APPLICATION SOFTWARE FOR FP

In an FP application the following software tasks must

be handled by the MCU or within the module itself:

• UART communication (external microprocessor

only)

•FP MMI

• Display interface (optional)

• Keyboard interface (optional)

• Audio handling

• Tone / Melodies handling

For control commands see document reference [1].

UART Communication

The UART communication forms the basic of the FP

operation because via this interface the

SC14CVMDECT is controlled.

PP MMI

The MMI state machine must handle the call setup and

call termination on the FP.

Display Interface

The MCU/ FP handles the display interface including

the display driver.

Keyboard Interface

The MCU/ FP handles the keyboard interface including

the keyboard driver.

Audio Handling

The Application Software state machine must control

when to open and close the audio. The headset plug-in

detection is handled by the FP, and a status is send to

the FP MMI from the FP. The FP MMI must handle the

SC14CVMDECT Cordless Voice Module

volume control.

Headset detection boundaries can be adjusted in

EEPROM. When headset indication is received from

the FP headset detection logic (future release), the

Application Software can decide if audio should be

switched to headset and sends a request to the FP.

Tone Handling

The Application Software state machine must control

when to play tones and the volume setting. Custom

melodies can be defined in EEPROM.

7.3 HARDWARE DESIGN GUIDELINES

Within this section general design guidelines for

SC14CVMDECT FP and PP applications are given.

7.3.1 Circuit design Guidelines

For a reference schematic refer to the SC14CVMDECT

reference kit. With the reference kit package a non-

cost optimized reference design is presented.

For a FP hardware design the following hardware parts

will be needed besides the SC14CVMDECT:

• Supply voltage

• Battery charge

• LED and buttons

• Speakerphone

For a PP hardware design the following hardware parts

will be needed besides the SC14CVMDECT:

• Power

• Battery Charger

• Audio:

• Microphone

• Earpiece

• Speaker

• Headset

7.3.2 PCB Design Guidelines

• Because of the presence of the digital radio

frequency burst with 100 Hz time division periods

(TDD noise), supply ripple and RF radiation, special

attention is needed for the power supply and ground

PCB layout.

• Power supply considerations

Both high and low frequency bypassing of the supply

line connections should be provided and placed as

close as possible to the SC14CVMDECT. In order to

get the best overall performance for both FP and PP

applications, a number of considerations for the PCB

has to be taken into account.

• The width of the power amplifier supply line is rec-

ommended to be between 0.8 and 1.2 mm due to

high current peaks during RF bursts.

• Make angle breaks on long supply lines to avoid

resonance frequencies in respect to DECT fre-

quencies. Maximum 8 cm before an angle break

is recommended.

• Supply lines should be placed as far as possible

away from sensitive audio circuits. If it is neces-

sary to cross supply lines and audio lines, it

should be done with right angles between supply

and audio lines/circuits (microphone, ear-speaker,

speakerphone, etc.)

• Ground plane considerations

In order to achieve the best audio performance

and to avoid the influence of power supply noise,

RF radiation, TDD noise and other noise sources,

it is important that the audio circuits on both FP

and PP applications boards are connected to the

GND_ANA pins (analog ground) on the

SC14CVMDECT with separate nets in the layout.

It is advised to provide the following audio circuits

with separate ground nets connected to the

GND_ANA pins:

• Microphone(s)

• Headset microphone and speaker

• Speakerphone (signal grounds)

Depending on the layout it may also be necessary to

bypass a number of the audio signals listed above to

avoid humming, noise from RF radiation and TDD

noise with. It is also important to choose a microphone

of appropriate quality with a high RF immunity (with

built-in capacitor).

• ESD performance

Besides TDD noise, the ESD performance is

important for the end-application. In order to achieve

a high ESD performance supply lines should be

placed with a large distance from charging terminals,

display, headset connector and other electrical

terminals with direct contact to the ESD source.

On a two-layer PCB application it is important to

keep a simulated one layer ground. With a stable

ground ESD and TDD noise performance will always

improve.

SC14CVMDECT Cordless Voice Module

8.0 Audio Level Adjustment

8.1 PP AUDIO LEVEL

For adjusting the audio levels in the PP (SLR/TOLR)

and (RLR/OLR) the related eeprom parameters can

be adjusted during production.

8.2 FP AUDIO LEVEL)

For adjusting the audio level in the FP (SLR/TOLR)

and (RLR/ROLR) he related eeprom parameters can

be adjusted during production.

SC14CVMDECT Cordless Voice Module

9.0 Example Application Diagram

Figure 26 Referencediagram

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10.0 Mechanical Dimensions

Figure 27 Package Outline Drawing

SC14CVMDECT Cordless Voice Module

11.0 Module integration

11.1 MODULE PLACEMENT ON THE MAIN BOARD

In order to ensure FCC compliance, proper coverage

and to avoid detuning of the antennas, it required to

place the module free on the main board in relation to

other surrounding materials.

Keep a distance of at least 10 mm from the antenna

elements to conducting objects and at least 5 mm to

non-conducting objects.

Keep in mind that electrical shielding objects, even

partly surrounding the antennas, will normally cause a

significant degradation of the coverage.

Place the module at the corner of the main-board as

shown in Figure 28.

If the module has to be placed away from the edge of

the main-board, then avoid conducting areas in front of

the antennas and make a cut-out in the main board

underneath the antennas as shown in the figure.

Keep solid ground on layer 2 out to the edges of the

main board as shown.

Figure 28 Module placement on the main board (top view)

SC14CVMDECT Cordless Voice Module

12.0 UTAM membership waiver

Payment of the Up Front Membership Fee and Per

Radiating Device Fees is not required from a

manufacturer or distributor that uses an FCC-certified

module for which such fees have been paid. Such an

“FCC certified module” is defined as a device that

contains the complete UPCS-compliant radio modem

functionality from a supplier that has a valid UTAM

Affidavit. The hardware and firmware implementation

of the FCC certified module must not be modified by

the manufacturer or distributor in a way that would

invalidate its original FCC certification unless the

manufacturer of the device that will contain the module

secures its own FCC approval. Any applicant for FCC

approval seeking to use an FCC certified module must

give the FCC ID number of the certified module that it

will employ and attest that it is using a module for

which UTAM fees have been paid.

Dialog Semiconductor SC14A DECT Cordless Voice Module User Manual SC14CVMDECTv1 2ls

Dialog Semiconductor BV DECT Cordless Voice Module SC14CVMDECTv1 2ls

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