Data storage device increasing sequence detector clock frequency when bottleneck condition is detected

摘要

A data storage device is disclosed comprising a non-volatile memory (NVM). During a read operation, a sequence of signal samples is generated representing codewords stored in the NVM. The signal samples are buffered to generate buffered signal samples. The buffered signal samples are processed at a first frequency to detect a data sequence, and a bottleneck condition is detected associated with processing the buffered signal samples at the first frequency. When the bottleneck condition is detected, the buffered signal samples are processed at a second frequency higher than the first frequency to detect the data sequence.

主权项

1. A data storage device comprising:
a non-volatile memory (NVM); and control circuitry operable to:
during a read operation, generate a sequence of signal samples representing codewords stored in the NVM;buffer the signal samples to generate buffered signal samples;process the buffered signal samples at a first frequency to detect a data sequence;detect a bottleneck condition associated with processing the buffered signal samples at the first frequency; andwhen the bottleneck condition is detected, process the buffered signal samples at a second frequency higher than the first frequency to detect the data sequence.