Difference comparison between two asynchronous pointers and a pr

Details Difference comparison between two asynchronous pointers and a pr Difference comparison between two asynchronous pointers and a pr

1994-04-01

1996-03-26

Cosimano, Edward R.

Boots, shoes, and leggings

36518901, G06F 1900

Patent

active

055026559

ABSTRACT:
A first-in first-out (FIFO) memory includes flag generation circuitry indicating the relative fullness of the memory. A write and a read counter count the number of read and write clock signals used to read to and write from the memory. A subtractor circuit receives the values in the counters as inputs, and generates a difference signal as an output. This difference signal is then compared to a program value, and a flag generated indicating the relative magnitudes of the difference value and the program value. Several different program values can be utilized to generate several different flags for the memory.

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