SLVAFZ9 June   2026 TAC5212

 

  1.   1
  2.   Multiple TAC5x1x Devices with a Shared TDM and I2C Bus
  3.   Trademarks
  4. 1Introduction
  5. 2Sharing the Control Bus
  6. 3Sharing the Audio Bus
    1. 3.1 ASI Configuration for Shared TDM
    2. 3.2 ASI Configuration for Daisy Chain TDM
  7. 4Configuring PurePath Console 3 for Multiple TAC5x1x EVMs
    1. 4.1 Changing the Default I2C Address of the TAC5x1x
    2. 4.2 Launching PurePath Console with Multiple Devices
  8. 5PurePath Console I2C Scripts
    1. 5.1 TAC5x1x I2C Scripts for Shared TDM
    2. 5.2 TAC5x1x I2C Scripts for Daisy Chain TDM

4 Configuring PurePath Console 3 for Multiple TAC5x1x EVMs

The PurePath™ Console 3 supports multiple TAC5x1x devices connected to a single AC-MB. However, the AC-MB connector can only be connected to one TAC5x1x. To connect additional devices to a single AC-MB, externally wire power, ground, I2C, and TDM signals of the board connected to a single AC-MB to the respective signals of the other TAC5x1x EVMs. Connect only one EVM to the AC-MB while connecting the other signals through their respective headers or jumpers as follows:

  • Connect together IOVDD from all the TAC5x1x EVMs through the IOVDD test point.
  • Connect together AVDD from all the TAC5x1x EVMs through the AVDD test point.
  • Connect together the SCL pins from all TAC5x1x devices through the SCL test point.
  • Connect together the SDA pins from all TAC5x1x devices through the SDA test point.
  • Connect together the BCLK pins from all TAC5x1x devices through the BCLK test point.
  • Connect together the FSYNC pins from all TAC5x1x devices through the FSYNC test point.

  • Connect together a common GND from all TAC5x1x devices through any GND test point.

  • DOUT connections depend on Shared TDM or Daisy-Chain TDM mode:
    • For Shared TDM mode, connect together the DOUT pins from all TAC5x1x devices through the DOUT test point.
    • For Daisy-Chain TDM mode, connect the TAC5x1x EVMs in a daisy chain fashion:
      • Connect the GPIO1 signal at the GPIO1 test point from the board connected to the AC-MB to the DOUT pin of the second board through the DOUT test point.
      • Connect the signal of the second board at the GPIO1 test point to the DOUT pin of the third board through the DOUT test pin, if using three devices or more.
      • Connect the signal of the third board at the GPIO1 test point to the DOUT pin of the fourth board through the DOUT test pin, if using four devices.

These signals can be tapped at the respective digital test points of the TAC5x1x EVMs, as shown in Figure 4-1.

Location of TAC5x1x EVM I2C and TDM signals Figure 4-1 Location of TAC5x1x EVM I2C and TDM signals