Method and apparatus for testing serial connections
US7054356B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 28, 2002 |
| Grant date | May 30, 2006 |
| Priority date | — |
| Expiry date | Jun 5, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/041
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for testing a serial connection is presented. A serial data stream is transmitted from a sending device to a receiving device. The serial data stream is generated using sending device timing information and input data. A receiver in the receiving device recovers both the timing information and the input data and then inputs them back into a transmitter located in the receiving device. The transmitter in the receiving device then generates a second serial data stream based on the recovered input data and the sending device timing information. A receiver in the sending device receives the second serial data stream and outputs the sending device timing information and input data to a FIFO buffer, for alignment of the input data. Since the input data and timing information are generated based on a sending device timing information, the FIFO can provide a signal for testing by performing phase alignment on the data. There is no need to re-synchronize the data in the sending device. Using the sending device timing information to generate and test information in the sending device, removes the need to test data using a FIFO in the receiving device and reduces the co…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.