[SI-LIST] : Mixing GTLP Tx with GTL Rx

Tony Joyner (jaj@bbt.com)
Thu, 07 Jan 1999 13:53:56 -0500

I'm driving a heavily loaded 20' backplane (19 slots)
with GTLP drivers and my sim is showing problems meeting
setup at the recievers.

I noticed that the indecision threshold for GTL is +/-50mV,
while the indecision region for GTLP is +/- 200mV.

Can I buy myself +/-150mV margin by transmitting with GTLP
and receiving the same signal with GTL?

I know the threshold points/Vrefs are different (1V vs. 0.8V) but
my sims show that the GTLP driver is fairly clean around
0.8V +/-50mV.

I would appreciate any advice!

Thanks,
Tony Joyner
jaj@bbt.com

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