Part Number: TAC5212
Tool/software:
I would like to use the daisy chain feature of the TAC5212 to connect four devices together such that I can access the ADCs and DACs of all of the devices over one I2S bus with 4 signals - BCLK, FSYNC, DIN, and DOUT. In the datasheet there is reference to a "Multiple TAC5x1x Devices With a Shared TDM" document but it does not seem to have been published yet. Please advise on how the devices should be interconnected to enable this. Thanks!
Hi Timothy,
Apologies for the delay. Since the TAx5xxx device isn't fully released, there are supporting documents still in progress.
The registers are different but the functionality/concept is the same for our PCM6xx0-Q1 devices. You can use this document as a reference:
I have also validated daisy chaining of the DAC signal chain for 2 TAC5212 EVM's. The setup below:
I was using the Audio Precision x555 for digital audio transmission listed as AP1.
Visual of slot assignment:
Script for each each EVM:
EVM1 Playback script:
w a0 00 00
w a0 01 01
w a0 02 09
w a0 28 26 # Set data on slot 6
w a0 29 27 # Set data on slot 7
w a0 76 0c
w a0 78 40
EVM2 Playback script:
w a0 00 00
w a0 01 01
w a0 02 09
w a0 0a d2 # Set GPIO1 as Daisy Output
w a0 18 48 # Disable SASI, PASI daisy chain enable on GPIO1
w a0 19 08 # set Daisy direction - DAISY DIN
w a0 28 22 # Ch1 Slot 2
w a0 29 23 # Ch2 Slot 3
w a0 76 0c
w a0 78 40
