4 Configuring PurePath Console for Multiple PCM6xx0 EVMs

PurePath Console supports multiple PCM6xx0 devices connected to a single AC-MB. However, the AC-MB connector can only be connected to one PCM6xx0. 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 PCM6xx0 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 PCM6xx0 EVMs through the J31 jumper.
• Connect together AVDD from all the PCM6xx0 EVMs through the J29 jumper.
• Connect together RSTz from all the PCM6xx0 devices through the RSTz test point.
• Connect together the SCL pins from all PCM6xx0 devices through the SCL test point.
• Connect together the SDA pins from all PCM6xx0 devices through the SDA test point.
• Connect together the BCLK pins from all PCM6xx0 devices through the BCLK test point.
• Connect together the FSYNC pins from all PCM6xx0 devices through the FSYNC test point.
• SDOUT connections depend on Shared TDM or Daisy-Chain TDM mode:
  • For Shared TDM mode, connect together the SDOUT pins from all PCM6xx0 devices through the DOUT test point.
  • For Daisy-Chain TDM mode, connect the PCM6xx0 EVMs in a daisy chain fashion:
    • Connect the GPIO1 signal at the header J28, pin1 (GPIO1) from the board connected to the AC-MB to the SDOUT pin of the second board through the DOUT test point.
    • Connect the signal of the second board at the header J28, pin1 (GPIO1) to the SDOUT 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 header J28, pin1 (GPIO1) to the SDOUT 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 PCM6xx0 EVMs, as shown in Figure 19.

Figure 19. Location of PCM6xx0 EVM I²C and TDM signals