Apparatus, system, and method for fast read request transfer through clock domains
US7966468B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2004 |
| Grant date | Jun 21, 2011 |
| Priority date | — |
| Expiry date | Dec 22, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/405
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A speculative transfer mechanism transfers a source synchronous read request from a first clock domain to a second clock domain. The address portion having address information is transferred to the second clock domain in response to detecting a source synchronous address strobe latching signal. A pointer is generated in response to detecting the address strobe latching signal and passed into the second clock domain. In one embodiment, a pointer is retimed to be stable for a timing window for which a crossover of the address portion may be performed in the second clock domain. Request logic in the second clock domain generates a read command based on the address portion and the pointer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.