Sampling circuit module, memory control circuit unit, and method for sampling data

A memory control circuit unit for controlling a rewritable non-volatile memory module, wherein the rewritable non-volatile memory module comprises a plurality of physical erasing units, the memory control circuit unit comprising:

• a host interface, configured to be coupled to a host system;
• a memory interface, configured to be coupled to the rewritable non-volatile memory module;
• a sampling circuit module, comprising:
• a delay-locked loop, comprising:
• a control circuit, configured to receive a reference clock signal to output a first control signal;
• and
• a delay circuit, coupled to the control circuit and comprising:
• a state machine circuit, configured to receive the first control signal and output a second control signal and/or a third control signal in response to the first control signal;
• a first delay line circuit, coupled to the state machine circuit and configured to receive the reference clock signal and the second control signal to output a first delay clock signal;
• a second delay line circuit, coupled to the state machine circuit and configured to receive the reference clock signal and the third control signal to output a second delay clock signal;
• and
• a delay signal output circuit, coupled to the first delay line circuit, the second delay line circuit and the state machine circuit and configured to receive the first delay clock signal and the second delay clock signal to output a third delay clock signal;
• and
• a sampling circuit, coupled to the delay-locked loop and configured to receive the third delay clock signal and sample a data signal according to the third delay clock signal to obtain sampled data;
• and
• a memory management circuit, coupled with the host interface, the memory interface and the sampling circuit module and configured to issue a writing command sequence, wherein the writing command sequence is configured to write data corresponding to the sampled data into the rewritable non-volatile memory module.

A method for sampling data, comprising:

• receiving a first control signal and outputting a second control signal and/or a third control signal in response to the first control signal;
• outputting a first delay clock signal according to a reference clock signal and the second control signal;
• outputting a second delay clock signal according to the reference clock signal and the third control signal;
• outputting a third delay clock signal according to the first delay clock signal and the second delay clock signal;
• sampling a data signal according to the third delay clock signal to obtain sampled data;
• and
• issuing a writing command sequence, wherein the writing command sequence is configured to write data corresponding to the sampled data into the rewritable non-volatile memory module.