SDRAM DIMM presence detect interface
US5862320A · kind A · utility
16Cited by
15References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1995 |
| Grant date | Jan 19, 1999 |
| Priority date | — |
| Expiry date | Dec 22, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2015
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A keyboard controller is used to drive the PDEN pins on DIMMs. A PC has a keyboard controller with a plurality of programmable input/output (I/O) pins. The state of the programmable I/O pins can be set by software. The pins are coupled to individual PDEN pins on the DIMMs. When the programmable I/O pins are activated, the PDEN pins are driven active and each DIMM outputs a signal indicating its characteristics. The signals are latched and stored for use by a memory controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.