Data strobe gating for source synchronous communications interface
US6671211B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 17, 2001 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | Feb 2, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C7/1087
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.