Patent ID: 6622268
Filing Date: 2003-09-16
Classification: H03M

Abstract:
A system for propagating error status over an error checking and correcting (ECC) protected channel comprising:a first device, the first device receiving data and an error status associated with the data, the first device generating check bits for the data based on a first ECC code and combining the check bits with the data to form at least one codeword; a channel operably connected to the first device, the first device sending the at least one codeword across the channel, the first device inserting a triple error into a nibble of one at least one codeword sent if the error status indicated an uncorrectable error; and a second device operably connected to the channel, the second device receiving the at least one codeword sent across the channel, the second device detecting triple errors within a nibble of the at least one codeword and any other single error in the at least one codeword using a second ECC code.