Link Play A76 Manuale utente

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NOTE: the module is limited to OEM installation only, separate approval is required for all

other operating configurations, including portable configurations and different antenna

configurations. When the module is used in host, it must consider FCC/IC required,refer to

FCC,& Radiation ExposureStatement and FCC/IC Warning.

OEM/Integrators Installation Manual

....

Doc Title Linkplay WiFiAudio-A76 Specification Number WMB20170117

Version 1.2

Document No.: WMB20170117 Page 2 of 21

HISTORY

Version Date Description

1.0 01/17/2017 Specification release

1.1 06/15/2017 Add electrical specifications

1.2 07/20/2017 Update VDDRTC current parameters

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Document No.: WMB20170117 Page 3 of 21

INDEX

1. Overview ..................................................................................................................................................... 4

1.1. Parameter ................................................................................................................................................. 4

2. Hardware description ................................................................................................................................ 5

2.1. Description of hardware interface ............................................................................................................ 5

2.2. Mechanical Dimension ............................................................................................................................ 8

2.3. External Antenna ................................................................................................................................... 11

2.4. Typical Application ................................................................................................................................ 12

2.5 Power on Sequence ...................................................................................................................................... 15

2.6 USB Host Port ....................................................................................................................................... 17

3. Electrical Specifications .......................................................................................................................... 18

3.1. Absolute Maximum Ratings .................................................................................................................. 18

3.2. Recommended operating conditions ...................................................................................................... 18

3.3 Power consumption ............................................................................................................................... 19

3. Software Introduction ......................................................................................................................................... 19

3.1. Feature list .................................................................................................................................................. 19

3.2. App support ................................................................................................................................................. 20

3.3. Certifications .............................................................................................................................................. 20

4. Module picture and package ............................................................................................................................... 20

Doc Title Linkplay WiFiAudio-A76 Specification Number WMB20170117

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Document No.: WMB20170117 Page 4 of 21

1. Overview

Linkplay Wi-Fi Audio module - A76, is our third generation smart audio modules developed to be used in the

connected speaker, sound bar and other connected audio devices. It integrates the low power Broadcom

BCM43438 Wi-Fi/BT chip and Ingenic X1000E application processor. The CPU is running at 1GHz with hardware

engine dedicated for floating point processing and the SIMD instruction acceleration. It supports IEEE 802.11

b/g/n/ac 2.4GHz. It also supports BT4.0 with EDR and BLE.

A76 module also provides USB, I2S, I2C, PWM, AUX in, SD/MMC etc. Interfaces.

The firmware is fully compatible with Apple AirPlay and digital living network alliance (DLNA) streaming

standards. It supports Hi-Fi audio up to 192Khz, 24-bit with most popular audio formats. It supports multi-room

and multi-channel audio streaming with perfect synchronization.

With this module, you can play the music on your speaker wirelessly from iPhone, iPad , iPod touch,

Android devices or PC. More important, it enables the traditional speaker system to become the Internet enabled

device through the wired or wireless connection provided by the module. Thus, you could freely playback any

Internet audio contents such as music, podcast, radio or either the accompany audio in the movie directly from the

Internet.

Feature

 Support IEEE 802.11 b/g/n Wi-Fi 2.4G

 Support BT4.0+EDR and BLE

Application

 Connected speaker, sound bar

 Connected audio devices

1.1.

Parameter

Items Performance

Wi-Fi

Certification FCC/CE

Standard IEEE 802.11 b/g/n 2.4GHz

Frequency 2.400GHz - 2.497GHz

2.4G Transmit

802.11b /CCK : 16 dBm ± 1.5 dB

@ EVM -9dB

802.11g /64-QAM(R=3/4) : 15 dBm ± 1.5 dB

@ EVM -25dB

802.11n /64-QAM(R=5/6) : 14 dBm ± 1.5 dB

@ EVM -27dB

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Modulation 802.11b : DQPSK, DBPSK, CCK

802.11g/n : 64-QAM,16-QAM, QPSK, BPSK

Receive sensitivity 2.4G

(typical)

802.11b: 11Mbps PER=8% @ -87 dBm,

802.11g: 54Mbps PER=10% @ -74 dBm

802.11n(20MHz) : MCS=7 PER=10% @ -71 dBm,

Maximum receiver power 802.11b : -10dBm

802.11g/n : -20dBm

Antenna External: I-PEX, antenna gain 0~2 dBi, shared with BT

Version Bluetooth V4.0

Frequency 2402 MHz ~ 2480 MHz

Number of Channel 79

Modulation FHSS, GFSK, DPSK, DQPSK

Transmit (Class1.5) 8 dBm

Receive sensitivity

@ BER=0.1% for GFSK (1Mbps) -86dBm

@ BER=0.01% for π/4-DQPSK (2Mbps) -86dBm

@ BER=0.01% for 8DPSK (3Mbps) -80dBm

Maximum receiver power

GFSK (1Mbps) :-20dBm

π/4-DQPSK (2Mbps) :-20dBm

8DPSK (3Mbps) :-20dBm

Antenna External: I-PEX, antenna gain 0~2 dBi, shared with BT

Hardware

Work voltage 5V

Work current TBD

Standby current TBD

Work temperature -5℃~40℃

Storage temperature -40℃~135℃

Wi-Fi work distance TBD

IO Extension USB，SD/MMC

Dimension 41.7mm x 32.2mm 56-PIN DIP

Table1-1 Linkplay A76 module parameters

2. Hardware description

2.1.

Description of hardware interface

A76 provides the option to connect with customer board through its 56-pins DIP. The detail is as follows.

Doc Title Linkplay WiFiAudio-A76 Specification Number WMB20170117

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Document No.: WMB20170117 Page 6 of 21

Figure 2-1 A76 interface pins

Pin description:

Pin No. Pin Name Type Function0 Function1

1，2，5，

29，30，

GND Supply Digital ground

3，4 5VIN Power I Power supply input > 500mA

6 VDDRTC Power I RTC power supply input < 40uA

8 +3.3V Power O Output for I/O power < 100mA

7 GPC23 I SDIO0 card detect, external

pull-up required

9 GPB22 I/O General purpose input output,

external pull-up required

10 MSC0_CMD O SDIO0 command, external

pull-up required

11 MSC0_CLK O SDIO0 clock

12 MSC0_D0 I/O SDIO0 data 0, external pull-up

required

13 MSC0_D1 I/O SDIO0 data 1, external pull-up

Doc Title Linkplay WiFiAudio-A76 Specification Number WMB20170117

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required

14 MSC0_D2 I/O SDIO0 data 2, external pull-up

required

15 MSC0_D3 I/O SDIO0 data 3, external pull-up

required

16 GPB14 I/O General purpose input output,

external pull-up required

17 GPB12 I/O General purpose input output,

external pull-up required

18 GPB15 I/O General purpose input output,

external pull-up required

19 GPB13 I/O General purpose input output,

external pull-up required

20 GPB11 I/O General purpose input output,

external pull-up required

21 GPB10 I/O General purpose input output,

external pull-up required

22 GPB9 I/O General purpose input output,

external pull-up required

23 GPB8 I/O General purpose input output,

external pull-up required

24 GPB7 I/O General purpose input output,

external pull-up required

25 PWM3 I/O Pulse width modulation GPB6(General purpose input output,

external pull-up required)

26 PPRST_N I CPU reset, internal pull-up RC

delay

27 WKUP_N I Wake-up, internal pull-up

28 OTG_ID I OTG ID signal，internal pull-up

31 GPC22 I/O General purpose input output,

external pull-up required

32 GPC21 I/O General purpose input output,

external pull-up required

33 I2C0_SDA I/O I2C0 data, internal pull-up

34 I2C0_SCL I/O I2C0 clock, internal pull-up

35 PWM2 I/O Pulse width modulation

36 PWM1 I/O Pulse width modulation

37 PWM0 I/O Pulse width modulation

38 PWM4 I/O Pulse width modulation

39 GPD5 I/O General purpose input output,

external pull-up required

40 GPD4 I/O General purpose input output,

Doc Title Linkplay WiFiAudio-A76 Specification Number WMB20170117

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external pull-up required

41 GPD1 I/O General purpose input output,

external pull-up required I2C2_SDA

42 GPD3 I/O General purpose input output,

external pull-up required UART1_TXD

43 I2S_MCLK I/O I2S master clock

44 I2S_BCLK I/O I2S bit clock

45 I2S_DI I I2S data input

46 I2S_LRCLK I/O I2S L/R clock

47 I2S_DO O I2S data output

48 GPB5 I/O General purpose input output,

external pull-up required

49 GPD2 I/O General purpose input output,

external pull-up required UART1_RXD

50 GPB21 I/O General purpose input output,

external pull-up required

51 GPD0 I/O General purpose input output,

external pull-up required I2C2_SCL

52 PWRON O Power on output

53 GPB25 I/O General purpose input output,

external pull-up required Internal development only

55 USB_DP I/O USB data plus

56 USB_DM I/O USB data minus

Table 2-1 Linkplay A76 module pin description

Notes:

1. I：Input

2. O：Output

3. P：Power

4. PU：Internal Pull Up

5. PD：Internal Pull Down

2.2.

Mechanical Dimension

Linkplay A76 module has the dimension of 41.7mm x 32.2mm. The detailed layout will be given shortly below.

Unit: mm

Doc Title Linkplay WiFiAudio-A76 Specification Number WMB20170117

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Document No.: WMB20170117 Page 9 of 21

TOP Components High Limit

Doc Title Linkplay WiFiAudio-A76 Specification Number WMB20170117

Version 1.2

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BOTTOM Components High Limit

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