Wistron NeWeb SWA9 Wireless Audio Module User Manual

Wistron NeWeb Corporation Wireless Audio Module

User Manual

AVNERA PROPRIETARY & CONFIDENTIAL | PROVIDED UNDER NDA

General Description

Every consumer wants to be free from wires,

but it has been challenging to find a low-cost,

high-quality, easy-to-use wireless audio

solution for the wireless subwoofer market.

Avnera’s proprietary wireless system takes a

new approach to wireless audio. The wireless

protocol was designed from the ground up and

delivers uncompressed mono audio, with fixed

latency over the air, without interference

problems.

Avnera’s wireless modules offer a low-touch,

easy-to-integrate wireless audio solution and

enable fast time to market by already solving

the problem associated with FCC certification,

antenna tuning and board optimization.

Modules based on Avnera’s AV6600 silicon

provide breakthrough wireless audio

functionality with fixed low-latency point-to-

point transport of uncompressed mono PCM

audio data at 16-bit, 48 kHz resolution using

either analog or digital (I2S) interfaces.

Applications

 Wireless Subwoofers

 Mono audio channel transmission

Ordering Options

AVMD6600-SWA91TXD: Transmit module

with digital audio input and integrated printed

PCB antennas

AVMD6600-SWA91RXD: Receive module

with digital audio output and integrated printed

PCB antennas

AVMD6600-SWA91RXA: Receive module with

analog audio output and integrated printed

PCB antennas

Features

 Audio Interfaces

 I2S Digital Input Interface with 95dB

end-to-end digital audio path

 Integrated DAC supporting Analog

output with 90dB SNR and 20-20KHz

bandwidth (RXA model only)

 Support for 15m range

 Frequency range: 2.4 GHz ISM band,

continuous dynamic frequency selection

 Forward error correction coding, error

detection, and audio-specific error

concealment

 Dual onboard printed PCB antennas for

multipath and fading mitigation

 Auto-search/synch and dynamic channel

selection

 Low, fixed latency of 13ms, suitable for

video lip-synch

 Connector: 2mm header which allows for

either horizontal or vertical module mounting

 Sample rate converter: Support for 16, 20,

24, and 32 bit PCM words at 8,16, 22.05, 24,

32, 44.1, and 48 kHz

 General purpose over-the-air (OTA) serial

interface:

 2 kbps, bi-directional, full duplex

 Support for meta-data and remote

control commands

PRELIMINARY

AudioMagic™ Module Datasheet

Point-to-point AVMD6600-SWA91 module family for

Mono Wireless Audio Systems, based on Avnera’s AV6600 IC

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1 Table of Contents

General Description ______________________________________________________________ 1

Applications ____________________________________________________________________ 1

Ordering Options ________________________________________________________________ 1

Features _______________________________________________________________________ 1

1 Table of Contents ____________________________________________________________ 2

2 Lists of Figures and Tables ____________________________________________________ 3

3 AVMD6600-SWA91-TXD/RXD/RXA Functional Block Diagrams _____________________ 4

4 AVMD6600-SWA91 Pin Information ____________________________________________ 7

5 AVMD6600-SWA91 Mechanical Dimensions______________________________________ 9

6 Electrical Specifications ______________________________________________________ 10

6.1 Absolute Maximum Ratings ______________________________________________________________ 10

6.2 Recommended Operating Range __________________________________________________________ 10

6.3 Electrical Characteristics ________________________________________________________________ 11

7 Application information ______________________________________________________ 12

7.1 Mechanical requirements ________________________________________________________________ 12

7.2 Application circuit ______________________________________________________________________ 13

7.3 External I2S Requirement _______________________________________________________________ 13

8 FCC and Industry Canada certification information _______________________________ 14

8.1 Label Information ______________________________________________________________________ 14

8.2 Equipment labeling requirements _________________________________________________________ 14

8.3 User manual labeling requirements ________________________________________________________ 15

9 Ordering Information _______________________________________________________ 16

10 Contact Information and Legal Disclaimer _____________________________________ 17

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2 Lists of Figures and Tables

Table 1: AVMD6600-SWA91 Module Block Diagram Description ___________________________________________ 6

Table 2: AVMD6600-SWA91 Pin Information ___________________________________________________________ 7

Table 3; AVMD6600-SWA91 Electrical Characteristics __________________________________________________ 11

Table 4: AVMD6600-SWA91 Module Ordering Information _______________________________________________ 16

Figure 1: AVMD6600-SWA91TXD Module Block Diagram................................................................................................ 4

Figure 2: AVMD6600-SWA91RXD Module Block Diagram ............................................................................................... 4

Figure 3: AVMD6600-SWA91RXA Module Block Diagram ................................................................................................ 5

Figure 4: AVMD6600-SWA91 mechanical dimensions ....................................................................................................... 9

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3 AVMD6600-SWA91-TXD/RXD/RXA Functional Block Diagrams

The AVMD6600-SWA91 module is available in three variations, Digital Input Transmitter, Digital Output

Receiver and Analog Output Receiver.

Note: The device does not have full I2S master capability and cannot generate MCLK as an output.

AV6600

Antenna

Diversity

Switch Balun

DSC

RFP

RFN

Crystal

TWI

EEPROM

SPI

(Slave) I2S

GPIO

GPIO VBATT

V3.3

LED

I2S Audio Input

2.4-2.5GHz

Printed PCB

Antennas

Antenna

matching

networks

RESET_N RESET_N

Figure 1: AVMD6600-SWA91TXD Module Block Diagram

AV6600

Antenna

Diversity

Switch Balun

DSC

RFP

RFN

Crystal

TWI

EEPROM

SPI

(Slave) I2S

GPIO

GPIO VBATT

V3.3

LED

I2S Audio Output

2.4-2.5GHz

Printed PCB

Antennas

Antenna

matching

networks

RESET_N RESET_N

Figure 2: AVMD6600-SWA91RXD Module Block Diagram

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Figure 3: AVMD6600-SWA91RXA Module Block Diagram

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Table 1: AVMD6600-SWA91 Module Block Diagram Description

Interface Description

SPI The AVMD6600s SPI interface is used to allow an external host to control the AV6600 IC

and to facilitate testing of the module.

GPIO/ LED The GPIO and LED lines allow buttons and LEDs to be connected to the AVMD6600-

SWA91 to allow the user to control the Audio Magic system and communicate the

system’s state to the user.

Analog Audio These pins form the AVMD6600-SWA91RXA module’s analog audio output. The analog

ground on the module and should be isolated from the host system’s ground to prevent

the creation of noise-inducing ground loops.

RESET_N This pin connects directly to the “RESET_N” pin on the AV6600 IC and is used to signal

the module to power on and off.

V3.3 This pin provides power to all elements of the AVMD6600-SWA91. Internal regulators

condition the input power according to the requirements of the various sub-circuit blocks.

I2S

These input pins connect to the AV6600’s digital audio interface and provide a digital

audio input channel. The AVMD6600-SWA91 TXD is always an I2S slave while the

AVMD6600-SWA91 RXD can be either a Slave or a Master I2S port but the module

cannot generate MCLK as an output..

Depending upon module configuration the audio data direction will change.

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4 AVMD6600-SWA91 Pin Information

Table 2: AVMD6600-SWA91 Pin Information

Number Pin Name

TXD/RXD Module Pin Name

RXA Module Type Pin Description

1 Not Connected Not Connected Analog

Ground Audio section ground; must be

connected to LINE_IN_COM at the

audio source to minimize noise.

2 Not Connected Not Connected Analog

Ground Audio section ground. Both

LINE_IN_COM and

LINE_IN_COM2 must be isolated

from system ground for best noise

performance

3 Not Connected Not Connected Analog

Input Reserved, not supported on these

module configurations

4 Not Connected LINE_OUT Analog

Output Mono Analog Audio Output

5 Not Connected LINE_OUT_COM Analog

Ground Audio section ground.

LINE_OUT_COM must be isolated

from the system ground for best

noise performance.

6 GND GND Ground Digital section ground. Tie to Pin 24

as close to the module as possible

7 V3.3 V3.3 Power Main power supply (3.3 Volts)

8 ADAT/GPIO1 GPIO1 Digital I/O Multifunction; I2S digital Audio data

output (Input for TXD, Output for

RXD), General Purpose I/O

Default = ADAT digital module

9 LRCLK/GPIO2 GPIO2 Digital I/O Multifunction; I2S digital Audio

frame clock input (Slave for TXD,

Master/Slave for RXD ), General

Purpose I/O

Default = LRCLK digital module

10 BCLK/GPIO3 GPIO3 Digital I/O Multifunction; I2S digital Audio bit

clock input (Slave for TXD,

Master/Slave for RXD), General

Purpose I/O

Default = BCLK digital module

11 LED LED Analog

Output LED drive line; current sink to GND

12 RESET_N RESET_N Digital

Input Active-LOW Reset input expecting

open drain connection

13 CMP CMP Analog

Input Comparator input; default function

is sensing battery status

14 S_MOSI/S_CLK/

GPIO12 S_MOSI/S_CLK/

GPIO12 Digital I/O Multifunction, SPI slave serial data

input, I2C slave clock, General-

Purpose I/O

Default = S_MOSI

15 S_MISO/S_SDA/

GPIO13 S_MISO/S_SDA/

GPIO13 Digital I/O Multifunction, SPI slave serial data

output, I2C slave data, General-

Purpose I/O

Default = S_MISO

16 S_SCLK/GPIO14 S_SCLK/GPIO14 Digital I/O Multifunction, SPI slave clock,

General-Purpose I/O

Default = S_SCLK

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17 S_SSB/GPIO15 S_SSB/GPIO15 Digital I/O Multifunction, SPI slave select,

General-Purpose I/O

Default = S_SSB

18 UART_RX/GPIO6 UART_RX/GPIO6 Digital I/O Multifunction, UART receive,

General-Purpose I/O

Default = GPIO6

19 UART_TX/GPIO7 UART_TX/GPIO7 Digital I/O Multifunction, UART transmit,

General-Purpose I/O

Default = GPIO7

20 M_MOSI/M_SCL/

GPIO4 M_MOSI/M_SCL/

GPIO4 Digital I/O Multifunction, SPI master serial data

output, I2C master clock, General-

Purpose I/O

Default = M_SCL

21 M_MISO/M_SDA/

GPIO6 M_MISO/M_SDA/

GPIO6 Digital I/O Multifunction, SPI master serial data

input, I2C master data, General-

Purpose I/O

Default = M_SDA

22 M_SCLK/GPIO8 M_SCLK/GPIO8 Digital I/O Multifunction, SPI master serial

clock, General-Purpose I/O

Default = GPIO8

23 M_SSB/GPIO9 M_SSB/GPIO9 Digital I/O Multifunction, SPI master serial

select, General-Purpose I/O

Default = GPIO9

24 GND GND Ground Digital section ground. Tie to Pin 6

as close to the module as possible

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5 AVMD6600-SWA91 Mechanical Dimensions

Figure 4: AVMD6600-SWA91 mechanical dimensions

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6 Electrical Specifications

6.1 Absolute Maximum Ratings

Absolute Maximum Ratings (AMR) are stress ratings only. AMR corresponds to the maximum value that can be applied without leading

to instantaneous or very short-term unrecoverable hard failure (destructive breakdown). Stresses beyond those listed under AMR may

cause permanent damage to the device.

Functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Range” is

not implied. Exposure to absolute-maximum-rated conditions for extended periods may adversely affect device reliability.

Device functional operating limits and guaranteed performance specifications are given under Electrical Characteristics at the test

conditions specified.

CONDITION MIN MAX

V3.3 Supply Voltage Input -0.3V 3.6V

Input Voltage Range – Digital

Inputs1 -0.3V 3.6V

Input Voltage Range – Analog

Inputs -0.3V V3.3+0.3V

Operating Temperature 0ºC +70ºC

Storage Temperature -40ºC +100ºC

Assembly Temperature TBD

Static Discharge Voltage – HBM2 TBD

Static Discharge Voltage – MM3 TBD

Notes:

Note 1: Digital GPIO Pins are 5V Tolerant when programmed as Inputs.

Note 2: Terminology: HBM => ESD human body model

Note 3: Terminology: MM => Machine model

6.2 Recommended Operating Range

PARAMETER MIN TYP MAX UNIT

V3.3 Supply pin voltage 3.0 3.6 V

Ambient Temperature (T

) 0 70 ºC

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6.3 Electrical Characteristics

Test Conditions: TA=+25ºC, V3.3=3.3V

Table 3; AVMD6600-SWA91 Electrical Characteristics

PARAMETER CONDITIONS MIN TYP MAX UNIT

RF Frequency Range 2405 2477 MHz

Audio Output Voltage

2 V

Audio SNR Analog Output1

88 dB

Audio SNR I2S Input/Output

I2S end to end 94 dB

Analog Audio THD+N

tbd dB

Range (LOS) 15 m

Current consumption V3.3(Active Audio mode) 50 mA

Note 1: AVMD6600-SWA91RXA module only

Note 2: AVMD6600-SWA91TXD/RXD modules only

Note 3: Measured at -3dbFS input, A weighting. Output is taken, using external DAC on Avnera development board.

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7 Application information

7.1 Mechanical requirements

Figure 5: Recommended module antenna system clearance

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7.2 Application circuit

Schematics are provided separately.

7.3 External I2S Requirement

The AVMD6600-SWA91 TXD module is an I2S slave only device and requires connection to a master I2S

device to provide LRCLK and BCLK. The AVMD6600-SWA91 RXD module is normally an I2S slave and

generates LRCLK, BCLK as well as I2S data out. The AVMD6600-SWA91 RXD module can be configured as

an I2S master but is not capable of generating MCLK as an output so can only be used with external slave

devices that contain some form of rate converter.

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8 FCC and Industry Canada certification information

8.1 Label Information

The AVMD6600-SWA91 family of modules will be certified by the requirements set by the US Federal

Communications Commission (Part 15) and Industry Canada (RSS-Gen, Issue 3, 2010-12 and RSS-210

issue 8, 2010-12) for certification as modular intentional radiators. The certification identification numbers are

as follows:

US FCC ID: NKR-SWA9

Industry Canada (IC): 4441A-SWA9

* IDs will be provided after certification has been completed

Avnera makes the following representations: This device complies with part 15 of the FCC Rules. Operation is

subject to the following two conditions:

(1) This device may not cause harmful interference,

(2) This device must accept any interference received, including

interference that may cause undesired operation.

Per FCC regulation 47 CFR 15.21: Changes or modifications not expressly approved by Avnera, as the party

responsible for compliance, can void the user’s authority to operate the equipment using AVMD6600-SWA91

modules.

8.2 Equipment labeling requirements

The statement shown below, or its equivalent, must appear on the external label of every piece of equipment

that contains an AVMD6600 module. If the size of the final equipment is too small to support such a label, the

statement described in must appear in the user manual for that equipment.

Contains

FCC ID NKR-SWA9

IC: 4441A-SWA9

This device complies with part 15 of the FCC Rules.

Operation is subject to the following two conditions:

(1) This device may not cause harmful interference

(2) This device must accept any interference received,

including interference that may cause undesired operation

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8.3 User manual labeling requirements

The statements shown below, or their equivalents, must appear in the user manual for equipment containing

AVMD6600-SWA91 modules:

Contains

FCC ID NKR-SWA9

IC: 4441A-SWA9

This device complies with part 15 of the FCC Rules.

Operation is subject to the following two conditions:

(1) This device may not cause harmful interference

(2) this device must accept any interference received,

including interference that may cause undesired operation

Per FCC regulation 47 CFR 15.21: Changes or modifications

not expressly approved by the party responsible

for compliance could void the user’s authority to operate the

equipment.

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9 Ordering Information

Table 4: AVMD6600-SWA91 Module Ordering Information

Module Part

Number Option

Code Description

SWA91TXD -TXD Digital Input , 2mm Header, integrated printed PCB

antennas

SWA91RXD -RXD Digital Output, 2mm Header, integrated printed PCB

antennas

SWA91RXA -RXA Analog Output, 2mm Header, integrated printed PCB

antennas

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10 Contact Information and Legal Disclaimer

Avnera Corporation

16505 Bethany Court, Suite 100

Beaverton, Oregon 97006

U.S.A.

Main: +1.503.718.4100

Fax: +1.503.718.4101

www.avnera.com

Avnera Corporation reserves the right to make changes without notice to the product to improve function,

reliability, or performance.

Avnera Corporation does not assume any liability arising from the application or use of the products or circuits

described herein.

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FCC Statement

Federal Communication Commission Interference Statement

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.

These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment

generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause

harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If

this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off

and on, the user is encouraged to try to correct the interference by one of the following measures:

● Reorient or relocate the receiving antenna.

● Increase the separation between the equipment and receiver.

● Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

● Consult the dealer or an experienced radio/TV technician for help.

FCC Caution: Any changes or modifications not expressly approved by the party responsible

for compliance could void the user’s authority to operate this equipment.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause

harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired

operation.

This device and its antenna(s) must not be co-located or operation in conjunction with any other antenna or transmitter.

Any changes or modifications not expressly approved by the manufacturer could void the user's authority to operate this equipment.

USERS MANUAL OF THE END PRODUCT:

The end user has to be informed that the FCC radio-frequency exposure guidelines for an uncontrolled environment can be satisfied. The

end user has to also be informed that any changes or modifications not expressly approved by the manufacturer could void the user's

authority to operate this equipment. If the size of the end product is smaller than 8x10cm, then additional FCC part 15.19 statement is

required to be available in the users manual: This device complies with Part 15 of FCC rules. Operation is subject to the following two

conditions: (1) this device may not cause harmful interference and (2) this device must accept any interference received, including

interference that may cause undesired operation.

LABEL OF THE END PRODUCT:

The final end product must be labeled in a visible area with the following " Contains TX FCC ID: NKR-SWA9 ". If the size of the end

product is larger than 8x10cm, then the following FCC part 15.19 statement has to also be available on the label: This device complies

with Part 15 of FCC rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference and (2)

this device must accept any interference received, including interference that may cause undesired operation.

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IC Statement

This Class B digital apparatus complies with Canadian ICES-003.

Cet appareil numérique de la classe B conforme á la norme NMB-003 du Canada.

This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this

device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired

operation of the device.

Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est

autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout

brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.

This device and its antenna(s) must not be co-located or operation in conjunction with any other antenna or transmitter.

IMPORTANT NOTE:

This module is intended for OEM integrator. The OEM integrator is still responsible for the IC compliance requirement of the end product,

which integrates this module.

Any changes or modifications not expressly approved by the manufacturer could void the user's authority to operate this equipment.

USERS MANUAL OF THE END PRODUCT:

In the users manual of the end product, the end user has to be informed that the IC radio-frequency exposure guidelines for an

uncontrolled environment can be satisfied. The end user has to also be informed that any changes or modifications not expressly

approved by the manufacturer could void the user's authority to operate this equipment. IC statement is required to be available in the

users manual: This Class B digital apparatus complies with Canadian ICES-003. Operation is subject to the following two conditions: (1)

this device may not cause harmful interference and (2) this device must accept any interference received, including interference that may

cause undesired operation.

LABEL OF THE END PRODUCT:

The final end product must be labeled in a visible area with the following " Contains TX IC : 4441A-SWA9 ".

Wistron NeWeb SWA9 Wireless Audio Module User Manual

Wistron NeWeb Corporation Wireless Audio Module

User Manual

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