Intra-pair differential skew compensation method and apparatus for high-speed cable data transmission systems
US8286022B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 2009 |
| Grant date | Oct 9, 2012 |
| Priority date | — |
| Expiry date | Jul 30, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03878
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A differential serial communication receiver circuit automatically compensates for intrapair skew between received differential signals on a serial differential communication link, with deterministic skew adjustment set during a receiver training period. Intrapair skew refers to the skew within a pair of differential signals, and is hence interchangeable with the term differential skew in the context of this document. During the receiver training period, a training data pattern is received, such as alternating ones and zeros (e.g., a D10.2 pattern as is known in the art), rather than an actual data payload. The differential serial communication receiver circuit includes a differential skew compensation circuit to compensate for intrapair skew. The differential skew compensation circuit receives a pair of complementary differential input signals including a noninverting input signal and an inverting input signal, and in response generates a skew compensated first differential output signal and a skew compensated second differential output signal. The differential skew compensation circuit compares the relative delay of the skew compensated first differential output signal and the sk…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.