aud_ws_in signal in SDI audio extractor

[Altera_Forum]

Hi 

 The aud_ws_in signal in SDI audio extractor is used as a reference word select signal to align the serial outputs of multiple audio extractors. (please see SDI use guide for the original description).  So, I expect to see aligned serial audio data if I connect a clock of 48KHz to the aud_ws_in of several audio extractors.  (My bit clock for the audio is 3.072MHz)  However, when I really do this, I don't think I have seen seen aligned serial audio data from signaltapII. Please see the attached siganltapII waveform.  The embedded audio data in SDI are all 1KHz tone from a test pattern generator. So their serial data should be the same. All I need is to align data between multiple audio extractors. Should I add FIFO to do this?  Does anyone have some suggestions about my question? Thanks.

[Altera_Forum]

Hello, YUFU0511! 

Did You find out how to solve that problem?

[Altera_Forum]

Hi, Aphraton 

 I eventually find the signal "aud_ws_in" can do the work for me. You may see the SDI user guide to understand how to use it.

[Altera_Forum]

--- Quote Start ---  Hi, Aphraton  I eventually find the signal "aud_ws_in" can do the work for me. You may see the SDI user guide to understand how to use it.  --- Quote End ---    Yes, I understand how to use signal "aud_ws_in". But You reported, that You had problems - output data not being aligned as seen in Your SignalTap screenshot. How did You solve output data not being aligned?