PECL and TTL programmable buffer?

Hello,

thumbing through the BIRDs, I found BIRD30.2, which talks about
programmable buffers.

I have a pair of differential pins, which can accept PECL differential
inputs, or if the (-) pin is grounded, the (+) pin can be used as TTL
Logic level input.

How would I model this in IBIS? would I use programmable buffers? if so,
can you give an example of how I might model this pair of pins using
programmable buffers?

Also, a general question, how many of the BIRDs are actually
incorporated into the ibischk syntax checker?

thanx,

Roland

******************************************
Roland Chang ext. 2647

PMC-Sierra
Applications Department
105-8555 Baxter Place
Burnaby, BC
V5A 4V7
Tel: (604) 415-6000

email: chang@pmc-sierra.bc.ca
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Received on Wed Jun 18 10:35:08 1997