Skew management for PAM communication systems
US9548858B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2016 |
| Grant date | Jan 17, 2017 |
| Priority date | — |
| Expiry date | Jan 18, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/03
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention is directed to communication systems. According to embodiments of the present invention, a communication system includes at least two communication lanes and a skew management module. The skew management module generates a control current based on output test patterns of the two communication lanes. The control current is integrated and compared to a reference voltage by a comparator, which generates an analog offset signal. A PLL of one of the communication lanes generates a corrected clock signal that is adjusted using the analog offset signal to remove or adjust the skew between the communication lanes. The corrected clock signal is used for output data. There are other embodiments as well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.