System and method for dynamically accessing memory while under normal functional operating conditions
US7363440B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 30, 2004 |
| Grant date | Apr 22, 2008 |
| Priority date | — |
| Expiry date | Dec 5, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/16
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for dynamically accessing memory under normal operating conditions without interrupting computer system clocks that are otherwise executing. At least a memory access mode and a memory address(es) are scanned into a control scan chain from a maintenance system. When the scan is complete, the information is collectively transferred to an access register bank. Based on the control signals, a selection multiplexer selects the information from the control scan chain provided by the maintenance system as opposed to standard signals generated by the computer system. Memory control input signals are generated in response to a clock trigger signal, and the read or write data transfer is initiated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.