Systems and Methods for Flash Memory Access

摘要

Embodiments are related to systems and methods for data processing, and more particularly to systems and methods for processing data accessed from a flash memory.

主权项

1. A system for accessing a flash memory device, the system comprising:
a flash memory read circuit including:
a hard data processing circuit operable to apply a hard data decoding algorithm to a set of hard data derived from flash memory cells, wherein application of the hard data decoding results in converged codewords and at least one non-converged codeword;an accumulated syndrome circuit operable to compute a partial syndrome of the converged codewords; anda multi-codeword parity based processing circuit including:
a cross codeword error correction circuit operable to calculate a soft data adjustment value based at least in part upon the at least one non-converged codeword; anda data decoding circuit operable to apply a secondary data decoding algorithm to the at least one non-converged codeword guided by a decoder input generated in part from the soft data adjustment value.