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BF548 EPPI receive with IFSGEN set FS jitter

Question asked by gideon on Aug 15, 2012
Latest reply on Aug 26, 2012 by Prashant

I set up EPPI1 to receive data (DIR = 0), while it is also generating the line and frame syncs (IFSGEN = 1) and clock (ICLKGEN = 1), with appropriate FS1 and FS2 width and period settings. The FS1 and FS2 signals jitter in length by variable numbers of half clocks, and even get out of sync with each other. It is so bad that the line track error bits get set and the transfer stops.

 

In this mode the Blackfin is generating its own clocks and frame syncs, so why would they jitter?

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