Re: [SI-LIST] : Signal Integrity of 500 MHz on PCB
Mike Jenkins (firstname.lastname@example.org)
Thu, 06 Nov 1997 12:27:07 -0800
On the question of propagating a 500 MHz clock across an FR4 board,
Fibre Channel and Gigabit Ethernet designs ship sub-nanosecond
pulses across boards routinely. The fastest continuous frequency
in such a data stream is, in fact, slightly over 500 MHz. What
makes this work is 1) differential signals, 2) point-to-point
signal paths only, and 3) doubly terminated nets. If your
application can afford these constraints, I believe propagating
a 500 MHz clock is feasible.
Hope that helps.
Mike Jenkins Phone: 408.433.7901 _____
LSI Logic Corp, ms/G750 Fax: 408.433.2840 LSI|LOGIC| (R)
1525 McCarthy Blvd. mailto:email@example.com | |
Milpitas, CA 95035 http://www.lsilogic.com |_____|