First-in first-out memory device and method for accessing the de

Details First-in first-out memory device and method for accessing the de First-in first-out memory device and method for accessing the de

1991-04-26

1993-07-13

LaRoche, Eugene R.

Static information storage and retrieval

Read/write circuit

Serial read/write

365219, G11C 1300

Patent

active

052280020

ABSTRACT:
To reduce the access time of a FIFO, a storage device is provided for storing pre-loaded data to be read from the memory array of the FIFO. Thus during each read operation, the pre-loaded data in the storage device is read and the next unit of data to be read during the next read operation is pre-loaded from the array into the storage device. A second storage device is provided for storing the first unit of data written into the array after the array is empty. Thus during the first read operation after the array is rendered non-empty by one or more consecutive write operations, the first unit of data stored in the second storage device is read during the first read operation. This avoids reading garbage from the first storage device which is pre-loaded during the last read operation before the FIFO is empty.

REFERENCES:
patent: 4888741 (1989-12-01), Malinowski
patent: 4891788 (1990-01-01), Kreifels
patent: 5027326 (1991-06-01), Jones
patent: 5093805 (1992-03-01), Singh

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