Method and apparatus for transferring data between data buses
US6930514B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2002 |
| Grant date | Aug 16, 2005 |
| Priority date | — |
| Expiry date | Dec 25, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/423
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods for transferring data. A circuit transfers information between two buses using different signal voltage levels and multiplexes signals applied to the second bus over multiple devices coupled thereto. The data on a first data bus is transferred at a first voltage level and the data on a second data bus is transferred at a second voltage level. For example, the first data bus may transfer data at 3.3V and the second data bus may transfer data at 5V. A logic device (e.g., a CPLD) is connected between the first and the second data buses for transferring the data between the first and second voltage levels. The logic device is also configured for multiplexing the data with the second voltage level between first and second devices (e.g., one or more LEDs and/or NVSRAMs) connected to the second data bus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.