Hi,

I have made a PLL with a PIC6F84 for clock recovery from a synchronous
bit stream.

My approach was setting up the timer for overflow at each bit period
and input the bit stream to the INT pin.

At every high-to-low signal transition, the interrupt routine compares
the timer with a fixed value to knows if the timer have to be delayed
or advanced.

In both cases, the software changes the timer by a liltle amount, say
1/64 bit period.

My questions are :

- Is there a better way for doing this ?
- What will be the best timer correction amount ?

Thanks for any comments.

---
Marcelo Puhl
mark@catolico.com.br
http://py3ss.cjb.net

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