Hi , I am new to working with TDM8 24bits
I have adau144x working in master mode
The DSP is working in pulse mode in TDM8 24bit mode.
I have delayed by one set ( i2s mode )
So I calculate there should be 32 fs clocks per slot x 8 slots = 256 fs clocks for the whole frame between pulses.
It appears that I have maximum of 20bits of audio in the middle of the slots with 8 bits either side.
Also I have on the left what seams like strobing bits accross the 1st 24bits ( left to right ) with nothing in the last 8bits (right )
the sclk is 12.288mhz
FS is 48khz
The ADAU1446 is master on TDM8 bus.
here's some pics from the scope.
the single slot,
My question really is , does anyone have a clue what could be causing the strobing across the 1st 24bits?
or is this normal for TDM8 ?
I wasn't seeing the 1st 8 - 10 bits since I never got anything load enough out of the DSP. I set tone to 100% and the full dynamic range of the 24bits is used.
So that only the question about the line across the top of the bits on the scope. Is this expected ?
I tried unconnected my ARM proto board as its quite noisy and I still get the top line from the DSP.