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TAS6424E-Q1: TDM8 format

Shinji Tsuji
Genius 13609 points
Part Number: TAS6424E-Q1

Hi team,

I would like to know the definition of SAP register 0x03 bit4 TDM slot size.

Does it mean the bit width of the input audio data? or does it mean the TDM slot size which is determined by the ratio of SCLK and fs?

For example, In my setting, fs=48kHz, SCLK=12.288MHz=256xfs, and input audio data width is 16bit. 

In this case, audio data is 16bit, but the slot size is 256/8ch=32bit. 

Should I set 16bit (1) or 32bit(0) in 0x03[bit4]? 

regards,

  • 0
    TI__Genius 10190 points

    Tsuji-san,

    TDM slot size is how many bit should be sampled in one slot.

    Shinji Tsuji said:

    Does it mean the bit width of the input audio data? or does it mean the TDM slot size which is determined by the ratio of SCLK and fs?

    The slot is always 32bit. The slot size is more like data length. So in the example, just keep default 0 would be fine.

    Shinji Tsuji said:

    For example, In my setting, fs=48kHz, SCLK=12.288MHz=256xfs, and input audio data width is 16bit.