Multimodal memory controllers

Details Multimodal memory controllers Multimodal memory controllers

2007-02-02

2010-08-10

Lugo, David B (Department: 2611)

Pulse or digital communications

Transmitters

C375S257000, C375S259000

Reexamination Certificate

active

07773689

ABSTRACT:
Multimodal memory controllers are disclosed that include: a transmitter having a first input signal line, a second input signal line, a first output signal line, a second output signal line, a first single-ended driver, a second single-ended driver, a differential transmitter, and a mode control signal line, the mode control signal line having asserted upon it a mode control signal, the transmitter configured to operate the output signal lines using the single-ended drivers at a first voltage when the mode control signal is a first value and to operate the output signal lines using the differential transmitter at a second voltage when the mode control signal is a second value, and the transmitter configured to protect the differential transmitter from the first voltage when the mode control signal is the first value.

REFERENCES:
patent: 6566911 (2003-05-01), Moyer
patent: 6836185 (2004-12-01), Pobanz
patent: 2003/0110339 (2003-06-01), Calvignac et al.
patent: 2004/0078456 (2004-04-01), Kennedy et al.
IBM Patent Application, U.S. Appl. No. 11/567,549, entitled “Multimodal Memory Controllers,” filed Daniel M. Dreps et al. on Dec. 6, 2006.

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