I2S MCLK alignment

[x1215]

In I2S DAC application, most datasheets specifies timing among LRCLK/BCLK/DATA. Without MCLK alignment?
It means there is no difference if I connect DAC's MCLK to signal source's MCLK_OUT or a crystal?
If yes, what make it no difference?
Thank you.

 

[TedA]

More help might be forthcoming here if you can provide a manufacturer and complete part number for a specific part.

Better still, a link to the datasheet where you see the things you mention.

Ted

 

[x1215]

http://www.ti.com/lit/ds/symlink/pcm1754-q1.pdf
datasheet about as an example.

MCLK is named as SCLK in this datasheet.
Page13 specifies the SCLK frequency, page15 specifies timing among LRCLK/BCK/DATA, you can see the relationship of these 3 signals, but no SCLK.

 

[x1215]

Renew the thread again
My question can be simplified as the following photo, if somebody know, please help.
Thanks a lot!