Integrated XNOR flip-flop for cache tag comparison

Details Integrated XNOR flip-flop for cache tag comparison Integrated XNOR flip-flop for cache tag comparison

1997-08-20

1999-11-30

Peikari, B. James

Static information storage and retrieval

Read/write circuit

Including signal comparison

36518909, 3401462, 326 54, 326 52, 327 12, 327 43, 327 64, 327 97, 711118, 711144, 711145, 711205, 711207, 711208, G06F 9305, G06F 1208

Patent

active

059954205

ABSTRACT:
An integrated XNOR flip-flop is provided which is faster than conventional XNOR flip-flop combinations. The integrated XNOR flip-flop is faster and uses less area than conventional XNOR flip-flop combinations. The integrated circuit has few gates along the critical path and takes advantage of the set up times inherent in the flip-flop. Accordingly, the integrated XNOR flip-flop is able to perform the same function in an expedient manner. In one illustrative embodiment, a plurality of the integrated XNOR flip-flops are used to compare a tag of a cache memory with an address to determine whether the desired address is available in the cache.

REFERENCES:
patent: 5301141 (1994-04-01), Traylor
patent: 5381127 (1995-01-01), Khieu
patent: 5386527 (1995-01-01), Bosshart
patent: 5497347 (1996-03-01), Feng
patent: 5528541 (1996-06-01), Ghia et al.
patent: 5623437 (1997-04-01), Nogle et al.
patent: 5630160 (1997-05-01), Simpson et al.

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