Doc Title Wireless Smart Audio Module-A98 Datasheet
Number
WMB20180504
Document No.: WMB20180504 Page 4 of 23
1. Overview
Linkplay Wireless Smart Audio module–A98, 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 A113X application processor. A113X 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-A53 CPU with L1 instruction/data cache for each core and
a large unified L2 cache to improve system performance. Each Cortex-A53 CPU can run up to 1.5GHz (DVFS +
hot plug) and has a wide bus connecting to the memory sub-system. When the system is suspended, the main CPU
can be powered off and the cortex-M3 in the always-on power domain can resume the system from multiple
interrupt sources.
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 high resolution audio formats including MP3, AAC, WMA, RM, FLAC,
Ogg, etc and with the flexibility to support future audio standards.
A113X integrates all standard audio input/output interfaces including multiple TDM, PCM, I2S and SPDIF
digital audio input/output interfaces, and 8 channel far-field PDM digital microphone (DMIC) inputs. Audio input
has power detector to wake up from low activity states and hardware assisted synchronization blocks for multiple
room audio applications. Audio input data can be restricted to trusted memory space to protect always-on audio
privacy.
A98 module supports IEEE 802.11 a/b/g/n/ac 2.4GHz and 5GHz. It also supports BT4.2 with EDR and BLE.
A98 module also provides USB, I2S, I2C, PDM, 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.
Features
Amlogic A113X application processor
128MB DRAM
128MB NAND FLASH
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
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