What are the major features of the CRC engine on ADSP-SC58x/ADSP-2158x processors?

  1. The CRC peripheral is used to perform the Cyclic Redundancy Check (CRC) of the block of data that is presented to the peripheral. The peripheral provides a means to periodically verify the integrity of the system memory, the contents of memory-mapped registers (MMRs), or communication message objects.

  2. It is based on a CRC32 engine that computes the signature of 32-bit data presented to the peripheral.

  3. The dedicated hardware compares the calculated signature of the operation to a preloaded expected signature and if the two fail to match, the peripheral generates an error.

  4. CRC engine can either take the data from an MDMA transfer, or from a source MDMA channel, or from the core.

  5. In addition to the CRC check, the engine can also be used for initializing large memory sections with a constant value or for verifying that sections of memory are equal to a constant value.

  6. It supports 32 bit programmable CRC polynomial with bit reverse option.

  7. Also supports bit/byte/word mirroring options.

  8. Auto clear and preset of the result is also supported.

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