Method and apparatus for test of asynchronous pipelines
US7890826B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2006 |
| Grant date | Feb 15, 2011 |
| Priority date | — |
| Expiry date | Mar 26, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/318594
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for test of asynchronous pipelines. An asynchronous data pipeline includes first and second pluralities of pipeline stages in an alternating sequence. Each of the pipeline stages includes a control circuit, a latch circuit configured to latch data responsive to an indication from the control circuit, and a combinational logic circuit coupled to receive data from an output of the latch circuit. Each of the latch circuits is scannable. The latch circuits of the first and second pluralities of pipeline stages form a data scan chain configured to load test data into the combinational logic circuits during testing of the data pipeline. The data pipeline further includes a control scan chain configured to load control data for operating the control circuits during testing of the data pipeline. Testing of the data pipeline can include independent testing of the control portion or the data portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.