Patent · US Active

Buffering non-posted read commands and responses

US8244950B2 · kind B2 · utility

5Cited by

20References

40Claims

0Family size

Assignee

Advanced Micro Devices, Inc. · US

Inventors

Frank Barth · Radebeul, DE
Larry D. Hewitt · Austin, US
Joerg Winkler · Ullersdorf, DE
Paul C. Miranda · Austin, US

Key dates

Filing date	Nov 1, 2002
Grant date	Aug 14, 2012
Priority date	—
Expiry date	Jan 29, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG06F13/4059
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

An improved interface technique for use in a southbridge or I/O hub or in similar devices is provided where non-posted read requests are received from at least one requestor, and upstream commands based on these requests are transmitted. Response data is received in reply to commands that were previously transmitted, and responses are transmitted to the at least one requester based on the response data. A buffer unit is provided for storing command identification data that identifies commands that were already transmitted or that are still to be transmitted, and response availability data that specifies response data that has been received by the receive engine. The improvement may enable multiple outstanding read requests.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.