Dan Michaels wrote:
>
> At 10:53 AM 11/27/00 -0600, you wrote:
> >On Wed, 22 Nov 2000 21:50:06 -0500, Dan Michaels wrote:
> >
> >>
> >>Even with a fast Scenix, it is hard to get a 20Mhz controllable
> >>clock output, but with the ECS chip [only 8-pin] you can get 20,
> >>10, and 5 Mhz, and then use the uC for slower timing. Problem is,
> >>with the ECS chip, 20Mhz [nondivided] comes out one pin and
> >>10/5/... [divided] comes out another pin.
> >
> >Do the ECS-300 chips go up to 40Mhz? If so, why not just use one with
> >double your top speed and always use the divided output ? ...
> >
>
> You expect things to be so easy?  No, they only go to 20 mhz.
> It would seem easy, and logical too, to have a single buffered
> output with both divided and base frequencies, but no.
>

Aren't there a number of 4000 series cmos prescaler/divider
chips?? These will work at 20-50MHz fine and maybe you can find one
with single output and four control lines (/2 - /32)
Just a thought, rather than try to use the divider chip you
already have just get another. :o)
-Roman

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