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Engineering Digital Design
book

Engineering Digital Design

by Richard F. Tinder
January 2000
Intermediate to advanced content levelIntermediate to advanced
884 pages
29h 39m
English
Academic Press
Content preview from Engineering Digital Design
312 CHAPTER 7 / PROGRAMMABLE LOGIC DEVICES
7.6 MULTIPLE PLD SCHEMES FOR AUGMENTING INPUT
AND OUTPUT CAPABILITY
Occasions arise when the I/O requirements of a design exceed the capabilities of the available
PLD. When this happens the designer may have no alternative but to combine PLDs in some
suitable fashion to meet the design requirements. To accomplish this requires the combined
use of tri-state driver and wired-OR technologies, which permit nearly an unlimited number
of outputs from different PLDs to be ORed together. The use of OR gates to accomplish
this task would suffer the disadvantage of fan-in limitations and speed reduction.
Figures 7.2 and ...
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Publisher Resources

ISBN: 9780126912951