From: Michael Nudelman (email@example.com)
Date: Thu Feb 15 2001 - 17:41:24 PST
Well, a clock distribution chip (they are way less expensive) may help.
Check Synergy or Cypress' Roboclock.
One for two - should work; terminate parallel in the end.
From: K.Orthner [mailto:firstname.lastname@example.org]
Sent: Thursday, February 15, 2001 08:25
Subject: [SI-LIST] : PECL Clocks.
I'm going to be buying some expensive +/-20ppm 77.76 MHz PECL oscillators to
provide the reference clocks for OC12 SerDes. I will have 4 Serdes on a
board, arranged in two pair. The two of the pair will be within an inch or
two of each other (PQFP64 packages.)
I'm hoping I can use 1 oscillator to drive two serdes, but I'm not
completely sure I can do this and expect everything else to work properly.
If I keep the distance between the two Serdes short, and I terminate
properly after the last serdes, I think maybe I can get away with it.
I'm hoping someone can tell me that this will be no problem, or that I
really shouldn't try.
Any comments or suggestions will be greatly appreciated.
Thanks in advance,
-- Kent Orthner ?? ?? Furukawa Electric ?????? 5-1-9 Higashi-Yawata, Hiratsuka, 254-0016 Japan Tel: (0463) 24 8451 Fax:(0463)24-8490 email@example.com
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