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Threshold and edma settings for video port on DM642

Started by mayank agarwal October 5, 2006
Hi all,
I am configuring the video port on DM642 for
transferring the 352*288 frame size.I have some doubt
in configuring the threshold and event register
values.
Suppose i want to generate event after 1 line in the
above scenario then i have to set the threshold
52(44 double words).In that case total events
generated for one frame (8.Then the edma element
acount should be set to 352,bcount(8.It means
transferring one frame of data.But in one frame of
352*288 size Y data52*288/2 so does it mean that by
doing the above calculation for Y i am sending two
frame of Y while configuring for one frame.Since the
settings on the edma side for Y,Cb,Cr are different so
how do we correleate those settings with the threshold
values which should be configured in video threshold
register and the number of events to be generated in
dispevt/capevt registers.
Thanks and Regards,
Mayank Agarwal

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