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USB Audio Transport Module

Firmware changelog:

Current firmware version: 4.16 (build 2826) New

03 Nov 2025: v4.16 build 2826

  • Support of 2.0, 3.1, 5.1 and 7.1 channel mappings (For Speaker output terminal)
  • Added 4 channel 2xI2S input mode

20 Oct 2025: v4.15 build 2703

  • Added 16/24/32 bit format support
  • Added 7.1/2.0 configuration (For Speaker output terminal)

07 Sep 2025: v4.14 build 2703

  • Bug fix: DMA channel order flip in 8ch/4ch configurations

25 Aug 2025: v2.0 Datasheet published

  • new audio interface modes and ISO module documentation added

17 Aug 2025: v4.13 build 2697

  • Bug fix: DMA buffer clean up during fs switch
  • TDA1541 idle pattern fix to remove clicks

30 Jun 2025: v4.12 build 2635

  • Bug fix: channel sync issue in TDM8 input when swiching fs
  • I2S, TDM8 input enabled on ISO version

25 Jun 2025: v4.11 build 2622

  • Bug fix: 8 channel I2S output at fs >48kHz
  • 384kHz enabled in 2 ch config with 1024fs clocks

15 Jun 2025: v4.10 build 2593

  • Bug fix: DMA issues when both input and output streams active

01 Jun 2025: v4.9 build 2588

  • Bug fix: I2C driver collision detection handling
  • Proper 100k/400k/1M speed support

20 May 2025: v4.8 build 2565

  • Bug fix: I2S input in slave mode doesn't affect masterclock settings
  • New mode: TDM 8 channel input

28 Apr 2025: v4.7 build 2434

  • Bug fix: Mute signal in multichannel mode

27 Apr 2025: v4.6 build 2424

  • Bug fix: I2S input channel swap in slave mode

12 Apr 2025: v4.5 build 2310

  • New HID bootloader
  • Supports firmware update and configuration on Linux/MacOS
  • New PCM dacs support: TDA1541 in simultaneous mode, TDA1540

09 Mar 2025: v4.4 build 1875

  • Enumeration issues fix on Linux/Android ARM devices

02 Mar 2025: v4.3 build 1780

  • HID interface issues fix for Linux

23 Feb 2025: v4.2 build 1634

  • S/PDIF output feature fix for v2 & ISO boards

17 Feb 2025: v4.1 build 1630

  • I2S input master port now always active providing the BCLK and WCK signals

08 Feb 2025: v4.0 build 1609

  • All usb descriptor string can be modified thru the app now

05 Feb 2025: v3.0 build 1599

  • Fixed iPhone USB enumeration issues

11 Jan 2025: v3.0 build 1528

  • Disabled DoP detection due to false DSD detection during 96k->44.1k switch