CRC operation unit and CRC operation method
US6754870B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2001 |
| Grant date | Jun 22, 2004 |
| Priority date | — |
| Expiry date | Aug 6, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/6569
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
To enable high-speed CRC operation and flexible use of various generating polynomials without causing significant increase in circuit scale, the CRC operation unit uses circuits generally provided for a DSP and some additional circuits. The CRC operation unit includes: a generating polynomial supply section having a first general register for storing an arbitrary generating polynomial and a selector for selectively outputting the generating polynomial or data of which all bits has a value of 0; an operation data supply section having a memory, a shift register, a second general register, and a barrel shifter, for outputting operation data for CRC operation based on transmitting/receiving data; an operation section for performing CRC operation using the generating polynomial output from the generating polynomial supply section and the operation data output from the operation data supply section; and an operation instruction execution control section for controlling the operations of the above sections.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.