Byte-enabled transfer for a data bus having fixed-byte data transfer
US7000045B2 · kind B2 · utility
10Cited by
20References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2002 |
| Grant date | Feb 14, 2006 |
| Priority date | — |
| Expiry date | Dec 22, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/4018
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data bus system transfers words and word portions on a data bus between master devices and slave devices. A size bus carries a size code in fixed-byte format that identifies a number of bytes being transferred in one or more words and/or word portions of a transaction. A byte-enable bus carries a byte-enable code that identifies valid bytes of a word. An interface decodes the byte-enable codes to size codes and, where an odd-byte byte-enable code is decoded, it decodes the odd-byte byte-enable code to a plurality of size codes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.