2 Hardware Setup

Follow these instructions:
  1. Close the J3 jumper to enable the 4-microphone PDMIC interface.
  2. Connect the Toslink cable between the SPDIF TX connector (J19 ) of the SAMA7G54-EK and the S/PDIF IN of the USB audio extender.
  3. Connect the Toslink cable between the SPDIF RX connector (J18 ) of the SAMA7G54-EK and the S/PDIF OUT of the USB audio extender.
  4. Connect the USB-TTL cable to J20 for console serial communication. The baud rate is 115200.
  5. Power up the USB audio extender by connecting the USB B cable to the USB B port of the USB audio extender.
  6. Power up the board by connecting the USB 2.0 micro-AB cable to the USB port J7 on the SAMA7G54-EK development board.
  7. Connect the headphones to the headphone jack located on the front of the USB audio extender.
  8. Use the audio splitter cable to split the audio and mic. Connect the audio splitter mic cable to the mono MIC 1 In port of the USB audio extender.