DDR memory modules with input buffers driving split traces...

Details DDR memory modules with input buffers driving split traces... DDR memory modules with input buffers driving split traces...

2005-09-20

2005-09-20

Elms, Richard (Department: 2824)

Static information storage and retrieval

Interconnection arrangements

C365S051000, C365S189050

Reexamination Certificate

active

06947304

ABSTRACT:
A memory module has improved signal propagation delays for signals externally driven such as from a motherboard. Reflections from junctions of wiring traces on the memory module are reduced or eliminated. An input buffer or register receives a signal from the motherboard and splits the signal to drive two outputs to two separate traces. Each trace is enlarged in width or thickness, such as by using a double-width wiring trace. At the fare end of each double-width trace, a junction is made to two minimum-width traces that connect to small stub traces to DRAM inputs. Reflections from the junction are eliminated or reduced by trace-impedance matching, since the input impedance of the double-width trace from the input buffer is about the same as the combined impedance of the two minimum-width traces. Trace-input matching and input buffering can improve signal integrity and overall propagation delay.

REFERENCES:
patent: 5260892 (1993-11-01), Testa
patent: 5426405 (1995-06-01), Miller et al.
patent: 5532954 (1996-07-01), Bechtolsheim et al.
patent: 6061263 (2000-05-01), Boaz et al.
patent: 6067594 (2000-05-01), Perino et al.
patent: 6104629 (2000-08-01), Wu
patent: 6125419 (2000-09-01), Umemura et al.
patent: 6236572 (2001-05-01), Teshome et al.
patent: 6449166 (2002-09-01), Sly et al.
patent: 6484299 (2002-11-01), Larsen
patent: 6487086 (2002-11-01), Ikeda
patent: 6515555 (2003-02-01), Leddige et al.
patent: 6542393 (2003-04-01), Chu et al.
patent: 6714433 (2004-03-01), Doblar et al.

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