Method and apparatus for addressing and controlling exspansion devices through an AC-link and a codec
US6529975B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 1999 |
| Grant date | Mar 4, 2003 |
| Priority date | — |
| Expiry date | Nov 2, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/162
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In one embodiment, a single designated register in a codec is utilized by a controller to address and control a large number of expansion registers belonging to various expansion devices. The controller can write to or read from the designated register through an AC-link while complying with the AC '97 specification. The address and data bits in the designated register are used to write to or read from a target register in an expansion device. The designated register is selected from one of the 16 registers available to a design engineer in accordance with the AC '97 specification. An example of an expansion device that can be addressed and controlled through the designated register is an SSD device. In another embodiment, two designated registers in the codec register set are utilized. The controller can write address information into one of the designated registers while complying with the AC '97 specification. The controller can also write data to or read data from the other designated register through the AC-link while complying with the AC '97 specification. The address and data bits in the designated registers are used to write to or read from a target register in an expansio…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.