It's a long time since I used this chip - I think Elentec do some =
enhanced versions of it.=20

If the line stability is OK, might it be possible to latch the framesync =
using the line sync ? (I
Can't remember if lsync is present during fsync)=20

On Mon, 28 Apr 2003 11:52:19 +0000, you wrote:

>Hi,
>
>Anyone familiar with the Elantec/Intersil LM1881 Sync Separator?
>
>I am trying to use the rising edge of Vertical Sync pulse to trigger a =
pic intrpt. I have found that the rising edge has unstable timing, with a=
 variation of up to 1us. The falling edge of the pulse appears to be =
perfectly stable. I have tried various combinations of Rset with no =
apparent effect on the stability.
>
>Has anyone experienced this? Anyone know if it can be corrected? Or will=
 just have to change my code to use the falling edge (would perfer to =
aviod this if possible).
>
>Thank you
>Regards,
>Daniel Sweet

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