Invention Grant
- Patent Title: Interleaved parallel redundancy check calculation for memory devices
- Patent Title (中): 存储器件的交错并行冗余校验计算
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Application No.: US12324494Application Date: 2008-11-26
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Publication No.: US09003259B2Publication Date: 2015-04-07
- Inventor: John F. Cooper
- Applicant: John F. Cooper
- Applicant Address: US NC Raleigh
- Assignee: Red Hat, Inc.
- Current Assignee: Red Hat, Inc.
- Current Assignee Address: US NC Raleigh
- Agency: Lowenstein Sandler LLP
- Main IPC: H03M13/00
- IPC: H03M13/00 ; G11C29/00 ; G06F11/10 ; G06F11/07 ; H03M13/09 ; H03M13/15 ; H04L1/00

Abstract:
In one embodiment, a mechanism for interleaved parallel cyclic redundancy check calculation for memory devices is disclosed. In one embodiment, a method includes generating an index value as part of a cyclic redundancy check (CRC) operation, the index value being a result of a first exclusive-or operation applied to both of input data directly as-is from a data bus and to data in a 64-bit accumulator utilized to store results of the CRC operation. The method also includes indexing an interleaved parallel CRC table with the index value to retrieve a 64-bit polynomial entry from the CRC table, performing a second exclusive-or operation on the retrieved polynomial entry and data in the 64-bit accumulator, storing the results of the second exclusive-or operation in the 64-bit accumulator, and transmitting contents of the 64-bit accumulator directly as-is to the data bus.
Public/Granted literature
- US20100131832A1 Mechanism for Interleaved Parallel Cyclic Redundancy Check Calculation for Memory Devices Public/Granted day:2010-05-27
Information query
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