Dear E2E:
Thank you for your help.
I usee McASP on OMAPL138.
1. The UG (SPRUH77A) Section 25.2.4.7.1 "Unexpected Frame Sync Error" page 1107 - A late unexpected frame sync occurs when there is a gap... between the last bit of the previous frame and the first bit of the second frame. When a late unexpected frame sync occurs (as soon as the gap is detected): Error interrupt flag RSYNCERR is set. Resynchronization occurs upon a of the next frame sync."
2. That means - no frame is ignored when the late RSYNCERR occurs. Is it correct?
3. The section 25.3.21 RSTAT register, page1145: RSYNCERR "Unexpected receive frame sync flag. RSYNCERR is set when a new receive frame sync (AFSR) occurs before it is expected" (not later)
4. Which the statement is correct - on page 1107 on page 1145?
5. Based on my testing - the correct statement is on page 1107 - the late RSINCERR is set. Is it true?
6. The late RSYNCERR happened because AFSR is generated by ADC converter after the "End of Conversion" which has the timing variation. Will late RSYNCERR cause any problem? Can it be just ignored since no frames are missed?
7. Can RSYNCERR prevent the data to enter the serializer buffer?
8. In my case the McASP is running OK but serializer buffer stays 0x0. The only error I have - is late RSYNCERR. Can it be a reason for not receiving the data on McASP in OMASPL138?
Thank you very much for your help,
Boris Ruvinsky