Allwinner G202 Dual Core Processor is Designed for Voice Activated Smart WiFi Speakers

Today I received Banana Pi BPI-M2 Ultra board together with Allwinner catalog. As I flicked through it, I discovered new Allwinner B-Series ARM Cortex A7 processors (B188 and B288) designed for e-readers, as well as Allwinner G-Series ARM Cortex A7 processors (G102 and G202) targeting the WiFi speaker market, now dominated by products like Amazon Echo or Google Home (in the US).

Allwinner G202 specifications:

  • CPU – Dual core ARM Cortex A7 processor
  • Memory I/F – DDR2/DDR3/DDR3L SDRAM
  • Storage I/F – eMMC 5.0, SD 2.0 compliant
  • Audio
    • 24-bit/192 Khz audio playback
    • 2x I2S/PCM interfaces up to 384 KHz sample rate, and 16 channel TDM with 32bit sample resolution
    • DSD (Direct Stream Digital) interface with 2 channels,64/128/256bit sample mode
    • DMIC (Digital Microphone) interface with 8 channels, maximum 48KHz sample rate
    • S/PDIF OUT interface
  • Connectivity – 802.11 b/g/n WiFi with WPS, WPA/WPA2 security
  • Other interfaces – USB 2.0 OTG, UART, SPI, TWI
  • Package – FBGA 236 balls, 11 x 11 mm,  0.65 pitch

The company provides Linux 3.10 and Android 4.4 operating systems for the processor. It has indeed all the interface you’d expect from a voice activated home assistant with support for microphone arrays, allegedly good quality audio output, and WiFi.

Block Diagram for Allwinner G202 – Click to Enlarge

I don’t have the full details for Allwinner G102 specifications, but based on the catalog, the main specifications are very similar, but it adds an RGB LCD display interface, resulting in a bigger FBGA 335 balls package.

Beside G-Series, Allwinner also recommend R16 processor for WiFi speakers, as well as older F-Series processor. Allwinner R16 is actually used in DingDong LLSS-A1 WiFi speaker shown in the top picture for illustration. You may find more details in Allwinner G202 product brief.

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