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3254 serial data format (Signed? Unsigned?)

Hi,

I could not find any documentation regarding the difference between the serial data formats on 3254 codecs in

  • One Clock delayed Left Justified Format (Data Unsigned or signed?)
  • I2S Format (Data Unsigned or signed?)

By the nature of the I2S, the serial data should be in 2's complement format. (is that the case in 3254??)

But if one clock delayed Left Justified mode is selected will the data format be unsigned or signed (twos complement)?

We'll be using I2S format on 3254. We need to make sure that the data we get from 3254 is in 2's complement form.

Can we clarify this? Or is there a document stating the data formats of each serial data selection on 3254? (I2S, Left Justified, Right Justified...)