Application specific modules in a programmable logic device

Details Application specific modules in a programmable logic device Application specific modules in a programmable logic device

1997-04-10

1998-11-10

Fears, Terrell W.

Static information storage and retrieval

Systems using particular element

Semiconductive

36518901, 36523001, G11C 1300

Patent

active

058354050

ABSTRACT:
A structure and a method provide a programmable logic device including a number of generic logic blocks and one or more application-specific block. Such application-specific block implements a specific function, such as a register file or a memory array. In one embodiment, the application specific block is programmable to be either one or more single-port memory array, a first-in-first-out (FIFO) memory, or a dual port memory array. In another embodiment, the application-specific block can be configured to be a register file, a number of counters, a number of timers, or a shift register. The application-specific block can be used in conjunction with programmable logic arrays for multiplexing input and output signals into and out of the application-specific block. Interconnectivity between the generic logic blocks and the application-specific blocks using a global routing resource integrates into a programmable logic device functions otherwise difficult to implement using only generic logic blocks.

REFERENCES:
patent: 4706216 (1987-11-01), Carter
patent: 4831591 (1989-05-01), Imazeki et al.
patent: 4855803 (1989-08-01), Azumai et al.
patent: 4872137 (1989-10-01), Jennings, III
patent: 5280202 (1994-01-01), Chan et al.

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