Doc Title Linkplay WiFiAudio-A88 Specification Number WMB20170414
Version 1.5
Document No.: WMB20170414 Page 4 of 19
1. Overview
Linkplay Wi-Fi Audio module - A88, is our 3rd 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
BCM43455 Wi-Fi/BT chip and Amlogic A111 application processor. A111 is an advanced application processor
designed for connected audio applications. It integrates a powerful CPU subsystem, advanced multi-format audio
processing unit, a secured running environment and all major peripherals to form the low power audio AP.
The main system CPU is a quad-core ARM Cortex-A5 CPU with 32KB L1 instruction and 32KB data cache
for each core and a large 512KB L2 unified cache to improve system performance. Each Cortex-A5 CPU can run
up to 1.5GHz and has a wide bus connecting to the memory sub-system. The main CPU handles all operating
system, networking and user-interface related tasks. The audio processing engine (APE) is based on ARM®
NEONTM general-purpose SIMD architecture which works seamlessly with main CPU to accelerate the
multimedia processing algorithms, enhancing the user experience. It is able to decode all major audio formats up to
192KHz high resolution including MP3, AAC, WMA, RM, FLAC, OGG, etc and with the flexibility to support
future audio standards. A111 also integrates all standard audio input/output interfaces including I2S, PCM and
S/PDIF audio input/output for different applications.
A88 module supports IEEE 802.11 a/b/g/n/ac 2.4GHz and 5GHz. It also supports BT4.2 with EDR and BLE.
A88 module also provides USB, I2S, I2C, PWM, SPI, UART 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 a/b/g/n/ac 1x1 antenna diversity Wi-Fi dual band
Support BT4.2 with EDR and BLE
Application
Connected speaker, sound bar
Connected audio devices
1.1. Key Components List
No. Type Description Brand
1 Main SoC A111 LFBGA 12x12mm 306-ball 0.65 ball pitch RoHS Amlogic
2 DRAM DDR3 H5TQ1G63EFR-PBC FBGA96 SMD RoHS SKHynix
3 FLASH SLC TC58NVG0S3HTA00 TSOP I 48 SMD RoHS TOSHIBA
4 Wi-Fi/BT AP6355SD 2.4G/5G DUAL BAND BT4.2 with EDR and BLE AMPAK
