At 11:54 PM 4/28/00 +0800, you wrote:
>Have been online searching for a lonnng time but no luck.
>
>Anyone can help to point me a source or sources to get 50MHz suitable
>for Scenix chips?  Scenix FAQ states that 3rd tone type is not that
>suitable, anyone has problems or success with that?
>
>Digikey only has oscillator and SMT type.  I am looking for a through
>lead type.
>No luck with findchips.com too.
>
>Thanks alot.
>
>Cheers, Ling SM
>

Mouser has FOX500-20 HC49U 50 Mhz parallel mode xtals, but I
don't specifically know if they work with SX.

Digikey shows Citizen xtals at 50 in the latest catalog, they
don't appear to be 3rd overtone.

I have a Scenix SX28-52 Demo Board, and the xtals there are
labelled: ABRACON 50.000M-F AB 9703. Never heard of Abracon.
Regarding what someone said about layout - layout on this
bd is straightforward - and they actually have header jumpers
to select xtal vs oscillator. You;d think if layout were really
critical, this would kill it. There is a gnd plane under the
xtal area, but I suspect it is there for EMI rather than
a run-no-run issue.

Also, I've been using Epson SG-531PH oscillators (not cheap,
from Digikey) on my own boards. Been running the SX at 60 Mhz
this way.

best regards,
- Dan Michaels
Oricom Technologies
http://www.sni.net/~oricom
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