Programmable logic device with circuitry for observing programmable logic circuit signals and for preloading programmable logic circuits
US6897678B2 · kind B2 · utility
34Cited by
41References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2002 |
| Grant date | May 24, 2005 |
| Priority date | — |
| Expiry date | Oct 21, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/318516
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A programmable logic device is provided that contains circuitry that may be used for observing logic signals from programmable logic circuits on the device for testing the operation of the device. Circuitry is also provided that may be used for preloading data into various circuits on the device. The logic signal observing circuitry may allow registered signals to be observed, may allow combinatorial signals to be observed, or may allow both registered and combinatorial signals to be observed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.