Programmable logic integrated circuit architecture incorporating

Details Programmable logic integrated circuit architecture incorporating Programmable logic integrated circuit architecture incorporating

1997-04-08

1999-11-16

Tokar, Michael

Electronic digital logic circuitry

Multifunctional or programmable

Array

326 41, H03K 19177

Patent

active

059864656

ABSTRACT:
A logic element for a programmable logic device to implement a global shareable expander. The logic element includes logic modules (P0-P4) for implementing combinatorial logic and a register (445). The combinatorial and registered paths of a logic element may be utilized at the same time. The logic modules may be programmably coupled to the register. The output of the register may be programmably coupled through an output buffer (515) to an I/O pad (520) of the integrated circuit. The logic modules may bypass the register and directly programmably couple through the output buffer to the I/O pad. A logic module may be used as a shareable expander by programmably coupling the module through to a global interconnect with other logic modules in LABs coupled to the global interconnect.

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