Background CRC is a non-intrusive CRC calculation module. CRC calculation needs to be kicked off by the application and it can continue with the regular application execution. Once kicked off, the module will trigger an interrupt on completion of test or occurrence of an error. The module generates memory access which will be serviced once all pending functional accesses from CPU and DMA are complete. Since the memory accesses happen only during idle cycles, the MIPS impact of performing CRC computation is zero or very minimal. This modules helps to cover the faults in memory bit cells, address decoder logic and sense amplifier ( all memory logic involved during read operation).