total delay of ADAU1977 and AD1934

Hello support team,

I want to clarify total delay of ADAU1977 and AD1934 (at fs=48kHz) .
Group delay is specified in each datasheet as 22.9844/fs and 25/fs respectively, but how many extra sampling clocks do I need to assume for "Serial Auto Port" portion of each device?
I guess it requires at least 1 sampling clock to do serial to parallel conversion (and vice versa) but would that be all?

Regards,

kosok