Latch-to-latch timing rules

Latch-to-latch timing rules that ensure the proper operation of synchronous systems are presented and analyzed. The rules state bounds on the amount of propagation delay for the combinational logic between consecutive latch pairs in a digital design. If the bounds are satisfied in a design, then set...

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Bibliographic Details
Published in:IEEE transactions on computers 1990-06, Vol.39 (6), p.798-808
Main Authors: Champernowne, A.F., Bushard, L.B., Rusterholz, J.T., Schomburg, J.R.
Format: Article
Language:English
Subjects:
Aggregates
Applied sciences
Clocks
Computer science
control theory
systems
Delay systems
Digital systems
Exact sciences and technology
Logic design
Propagation delay
Robustness
Software
Space vector pulse width modulation
Timing
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Summary:Latch-to-latch timing rules that ensure the proper operation of synchronous systems are presented and analyzed. The rules state bounds on the amount of propagation delay for the combinational logic between consecutive latch pairs in a digital design. If the bounds are satisfied in a design, then setup and hold times are met throughout the design for each latch on each cycle of machine operation. The rules are quite general in that they apply to systems with multiple skew levels (a feature of most real systems), with multiple latch parameters such as clock to data propagation delays, data to data propagation delays, and setup and hold times, and with multiple clock pulse widths and clock phases. The abstract notion of a clock skew hierarchy is introduced and characterized. The rules are established by a novel and robust method.< >
ISSN:0018-9340
1557-9956
DOI:10.1109/12.53601