vishin@helios.cs.duke.edu (Sanjay Vishin) (02/25/89)
What are the reasons which would make a designer opt for a
4 phase clocking scheme, rather than a 2 phase(solid, safe) one ?
Some of the reasons I can think of are 4 phase precharged PLA's
(so if you have a lot of PLA's in your design maybe), or in a
2/3 bus microcoded processor with pipes (to ease the design of
the micro-cycles(?)), or a pipelined processor (RISC -2 uses 4 phase clocks),
Processors with dynamic control logic (The Bellmac processor uses
domino gates in its control/data (?)).
Vishin.
vishin@simon.mcnc.org
vishin@cs.duke.edu
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