Method and apparatus for setting a current of an output driver for the high speed bus
US6009487A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 1996 |
| Grant date | Dec 28, 1999 |
| Priority date | — |
| Expiry date | May 31, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/4072
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a system comprising a current controlling device and a plurality of signal lines coupled to the current controlling device, wherein the current controlling device has an output driver including a register, an improved method for setting a current of the output driver for at least one of the plurality of signal lines. The improved method determines a reference register-setting for the register of the current controlling device. The reference register-setting corresponds to a reference voltage for at least one of the plurality of signal lines. A target register-setting is then determined for the register based on the reference register-setting. The target register-setting corresponds to a target voltage for at least one of the plurality of signal lines, wherein the target voltage produces an appropriate swing about the reference voltage. An operational register-setting is then determined for the register based on the target register-setting. The current of the output driver for at least one of the plurality of signal lines is then set based on the operational register-setting so that a swing about the reference voltage is optimal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.