02-08-2013 05:22 AM
HiThe 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.
11-11-2013 07:51 AM
--- 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?