[Coco] new high density controller

Mike Pepe lamune at doki-doki.net
Thu Aug 10 09:22:20 EDT 2006


jdaggett at gate.net wrote:

> *****************
> 
> The integrator ( filter) circuit on the PUMP pin, which by the way is an output, is there to 
> filter the error pulses generated by the phase detector of the VCO system. You need to only 
> have one value for this filter. The widest step in frequency would determine the cutoff 
> frequency of the integrator. In the case of SD to HD would be  the frequency difference 
> between 125Kb/Sec to 500Kb/Sec data stream.
> 
> 
> james
> 

Hi James,

I trust your judgment, though the data sheet for the chip does specify 
two values. I was working on using a relay to switch them. (ugh)

I may just have to try it and see if I can get the 2793 to work.

-Mike



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