Static information storage and retrieval – Read/write circuit – Testing
Reexamination Certificate
2011-03-15
2011-03-15
Nguyen, Viet Q (Department: 2827)
Static information storage and retrieval
Read/write circuit
Testing
C365S189070, C365S189020, C714S725000, C714S766000
Reexamination Certificate
active
07907460
ABSTRACT:
Error detection circuitry is provided on a programmable logic resource. Programmable logic resource configuration data is loaded into a cyclic redundancy check (CRC) module where a checksum calculation may be performed. In one embodiment, the checksum may be compared to an expected value, which is a precomputed checksum on data prior to being programmed into or while data is being programmed into a programmable logic resource. In another embodiment, the expected value may be included in the checksum calculation. An output indicating whether an error is detected may be generated depending on the relationship between the checksum and the expected value, or on the value of the checksum. This output may be sent to an output pin that is accessible by user logic.
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Lee Andy L.
Ngo Ninh D.
Veenstra Kerry
Altera Corporation
Nguyen Viet Q
Ropes & Gray LLP
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