Method and interface for improved efficiency in performing bus-to-bus read data transfers
US6766386B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2001 |
| Grant date | Jul 20, 2004 |
| Priority date | — |
| Expiry date | Jul 18, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/4004
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A novel method and interface is provided for conducting read data transfers between an initiator device on a single-transaction bus and a target device on a split-transaction bus. Embodiments of the present invention permit the initiator device to “post” a read request for a specified amount of data from a specified address on the split-transaction bus to an interface that resides between the single-transaction bus and the split-transaction bus. The requested read data is then retrieved over the split-transaction bus and presented in a high-speed memory within the interface for direct access by the initiator device over the single-transaction bus. Latency is avoided because the initiator device is not required to wait for the emergence of the requested read data from the split-transaction bus but, instead, may continue to perform other activities on the single-transaction bus and then obtain the requested read data at a later time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.