FPGA CLE with two independent carry chains

Details FPGA CLE with two independent carry chains FPGA CLE with two independent carry chains

1999-05-13

2000-08-22

Tokar, Michael

Electronic digital logic circuitry

Multifunctional or programmable

Array

326 39, H01L 2500

Patent

active

061078271

ABSTRACT:
The invention provides an FPGA comprising an array of identical tiles. Each tile comprises a logic block that includes a Configurable Logic Element (CLE). In one embodiment, the CLE is implemented in two similar portions called "slices". Each slice has a separate carry chain. In a CLE with four function generators, each carry chain incorporates the outputs of two function generators.

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