Method and circuit for initializing a de-skewing buffer in a clock forwarded system
US6952791B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2002 |
| Grant date | Oct 4, 2005 |
| Priority date | — |
| Expiry date | Aug 22, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/10
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and circuit for initializing a buffer in a clock forwarded system. A buffer is configured for temporarily storing incoming data received on the clock-forwarded interface. The buffer may use a write pointer and a read pointer which may be clocked by two different clocks allowing independent write and read accesses to the buffer. In an initialization mode, a predetermined pattern of data may be written into an entry in the buffer. In one embodiment, a logic circuit may detect the predetermined pattern of data and may cause the value of the write pointer to be captured. A synchronizing circuit may synchronize an indication that the predetermined pattern of data has been detected to the clock used by the read pointer. The synchronizer circuit may then provide a initialize signal to the read pointer which stores the captured write pointer value into the read pointer. This captured write pointer value becomes the initial value of the read pointer, effectively offsetting the read pointer from the write pointer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.