DDR interface for reducing SSO/SSI noise

Details DDR interface for reducing SSO/SSI noise DDR interface for reducing SSO/SSI noise

2003-08-11

2009-02-03

Moe, Aung S (Department: 2616)

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via time channels

C375S375000, C713S500000

Reexamination Certificate

active

07486702

ABSTRACT:
An improved DDR interface uses single-ended technology and phase-shifts all output data signals and the output source clock signal so that each output signal switches at a different time so that IDDQ spikes caused by I/O switching do not accumulate. A dynamic phase adjustment circuit on the receiver compensates for the phase differences. Clock jitter and skew is reduced and the number of IDDQ pins is reduced to provide a more effective design and high density package.

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