Supporting cyclic redundancy checking for PCI-X
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United States of America Patent
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Nov 4, 2008
Grant Date -
Mar 18, 2004
app pub date -
Sep 12, 2002
filing date -
Sep 12, 2002
priority date (Note) -
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Abstract
A cyclic redundancy check (CRC) mechanism for the extensions (PCI-X) to the Peripheral Component Interconnect (PCI) bus system used in computer systems is fully backward compatible with the full PCI-X protocol. CRC check-bits are inserted to provide error detection capability for the header address and attribute phases, and for burst and DWORD transaction data phases. The CRC check-bits are inserted into unused attribute or clock (or target response) phases, or into reserved or reserved drive high portions (bits) of the address/data (AD), command/byte enable (C/BE#), or into the parity lanes of the PCI-X phases.
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