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TFP401A: HS jitter

Part Number: TFP401A
Other Parts Discussed in Thread: TFP401,

When TFP401 recieves the following timing, HS output of TFP401 has jitter.

Jitter is 8 pixel clocks.

Input timing:

 Clock:28.32MHz

 [Horizontal] Total:900, Active:720, SyncWidth:108, Front Porch:18 , Back Porch:54 (clocks)

 [Vertical] Total:525, Active:400, SyncWidth:2, Front Porch:50 , Back Porch:73 (lines)

When Horizontal Total is 904 clocks, There is not jitter of HS output.

But we need to support Horizontal Total:900 clocks.

Please give me some advice to improve this phenomenon.