Data storage device with data recovery process using fixed phase clocking for analog-to-digital conversion

A data storage device comprising:

• an analog-to-digital converter that converts an analog signal into digital data representing a voltage;
• a programmable clock generator that supplies a clock signal to the analog-to-digital converter, the programmable clock generator having at least first and second clocking modes with the first clocking mode including automatic adjustment of the phase of the clock signal based on feedback and the second clocking mode that does not include automatic adjustment of the phase of the clock signal based on feedback;
• and
• means for recovering data after an error has been detected after processing a unit of data through the analog-to-digital converter using the first clocking mode, the means for recovering data including means for processing an analog signal for the unit of data through the analog-to-digital converter using the second clocking mode to generate digital data and means for storing the digital data in a sample buffer and means for interpolating digital data using a programmable delay line.