AD1938 TDM Frame Sync format

I plan to use an AD1938 in TDM mode together with a PIC32MX (or PIC32MZ).  Receiving data from the ADC's should work, but it does not support generating 8-channel TDM -- it cannot generate a frame sync (LRCLK) as depicted in the AD1938 document.

The PIC can output data in framed SPI mode, with the required 32 bytes of data per frame, but the frame sync will only be a bit wide (or word wide).

My question is: Does AD1938 care where the second (rising) edge occurs in the frame?  I would guess it only cares about the falling edge to determine where the frame starts.


Thank You.

Burt

Edit:  I will NOT use the onboard PLL to derive MCLK from LRCLK.



I will NOT use the onboard PLL to derive MCLK from LRCLK.
[edited by: BurtNelson at 6:12 PM (GMT 0) on 25 Jan 2020]