Method and apparatus for providing compatibility with synchronou

Details Method and apparatus for providing compatibility with synchronou Method and apparatus for providing compatibility with synchronou

2000-03-13

2000-11-28

Le, Vu A.

Static information storage and retrieval

Addressing

Optical

36523003, G11C 1304

Patent

active

061544191

ABSTRACT:
A method and apparatus for providing compatibility with synchronous dynamic random access memory (SDRAM) and double data rate (DDR) memory is provided. While memory accessing agents, such a microprocessors, typically have a fixed memory access size (e.g., number of bits or bytes exchanged with a memory device in a single operation), DDR memory provides twice the memory burst capability of SDRAM. A method and apparatus is provided to allow memory access agents to exchange data with both SDRAM and DDR memory. Smaller groups of data may be combined or larger groups of data may be separated to allow compatibility. Buffering is provided to accommodate proper timing. Both SDRAM and DDR memory may be used simultaneously.

REFERENCES:
patent: 6044032 (2000-03-01), Li
patent: 6060916 (2000-05-01), Park

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