Data strobe gating for source synchronous communications...

Details Data strobe gating for source synchronous communications... Data strobe gating for source synchronous communications...

2005-09-06

2005-09-06

Phung, Anh (Department: 2824)

Static information storage and retrieval

Read/write circuit

Having particular data buffer or latch

C365S230080, C365S230020

Reexamination Certificate

active

06940760

ABSTRACT:
A circuit arrangement and method are used in connection with a data latch that is coupled to a data source over a source synchronous communications interface to disable the data latch from latching data whenever the data source is not driving the source synchronous data strobe signal. As such, when the data source is not driving the source synchronous data strobe signal, undesired and/or inadvertent latching by the data latch can be avoided. Moreover, in implementations where a data strobe signal line is bidirectional, and capable of being driven either by the data source or by another circuit used to access the data source (e.g., a memory controller), disabling data latching as described herein can minimize the risk of driver damage resulting from conflicting attempts to drive the data strobe signal line at both ends.

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