Universal DRAM address multiplexer

Details Universal DRAM address multiplexer Universal DRAM address multiplexer

1997-11-25

2000-03-14

Thai, Tuan V.

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

711100, 36518905, 36523002, 36523006, G06F 1200

Patent

active

060386371

ABSTRACT:
This invention relates to a method and circuit for addressing a symmetric or asymmetric 2.sup.M -element DRAM module using identical circuitry. The method consists of receiving an original address comprising M bits 0 to M-1 identifying a specific memory element, then deriving from these bits a column address and a row address which together identify the specific memory element. The column address comprises N bits 0 to N-1 which match in direct order bits 0 to N-1 of the original address and the row address comprises N bits 0 to N-1 which match in reverse order bits N-2 to M-1 of the original address. A circuit for selectively connecting a set of input address lines to a set of output address lines in a column mapping or a row mapping is also disclosed. The circuit comprises M input address lines 0 to M-1 and N output address lines 0 to N-1. The column mapping associates output address lines 0 to N-1 with input address lines 0 to N-1 in direct order, and the row mapping associates output address lines 0 to N-1 with input address lines N-2 to M-1 in reverse order. The circuit may also comprise a strobe signal for selecting between the column mapping and the row mapping.

REFERENCES:
patent: 5600604 (1997-02-01), Chen
patent: 5802603 (1998-09-01), Bains et al.
patent: 5805854 (1998-09-01), Shigeeda

Affiliated with

Also associated with

Rating

Universal DRAM address multiplexer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Universal DRAM address multiplexer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Universal DRAM address multiplexer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-179662