Computer system and method for synthesizing a filter circuit for

Details Computer system and method for synthesizing a filter circuit for Computer system and method for synthesizing a filter circuit for

1996-09-03

1999-07-27

Gossage, Glenn

Electrical computers and digital processing systems: memory

Addressing combined with specific memory configuration or...

711217, 371 211, 371 225, G06F 1200, G11C 2900

Patent

active

059308141

ABSTRACT:
A method and circuit are provided for generating a minimum-sized address filter to detect when the address space of an embedded memory having a smaller address space than another larger embedded memory is being exceeded. The method includes decomposing a maximum address into alternating sequences of consecutive binary ones (1's) and zeros (0's), discarding a final sequence if it contains binary 1's, and generating a filter circuit from a filter function formed from the alternating sequences of consecutive binary 1's and 0's. A built-in self test (BIST) circuit incorporating the address filter provides the ability to test a plurality of embedded memories at full speed in parallel. A computer system including a computer program for generating the filter circuit may also be provided.

REFERENCES:
patent: 5138619 (1992-08-01), Fasang et al.
patent: 5258986 (1993-11-01), Zerbe
patent: 5535164 (1996-07-01), Adams et al.
patent: 5617531 (1997-04-01), Crouch et al.

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