Signal calibration method, memory storage device, and memory control circuit unit

A memory storage device, comprising:

• a connection interface unit, used to couple to a host system;
• a rewritable non-volatile memory module;
• a plurality of volatile memory modules;
• and
• a memory control circuit unit, coupled to the connection interface unit, the rewritable non-volatile memory module, and the volatile memory modules,
• wherein the memory control circuit unit is used to:
• generate a clock signal and a data strobe signal according to an internal clock signal;
• respectively transmit the clock signal and the data strobe signal to a target volatile memory module among the volatile memory modules through a first signal path and a second signal path;
• obtain a shift value between the data strobe signal and the clock signal at the target volatile memory module;
• and
• store an initial delay setting of the data strobe signal according to delay information of the data strobe signal in response to the shift value being greater than a threshold value.

A memory control circuit unit for controlling a plurality of volatile memory modules, the memory control circuit unit comprising:

• a memory controller;
• a memory interface circuit, coupled to the memory controller and the volatile memory modules;
• and
• a control circuit, coupled to the memory interface circuit,
• wherein the memory interface circuit is used to generate a clock signal and a data strobe signal according to an internal clock signal,
• the memory interface circuit is further used to respectively transmit the clock signal and the data strobe signal to a target volatile memory module among the volatile memory modules through a first signal path and a second signal path,
• the control circuit is used to obtain a shift value between the data strobe signal and the clock signal at the target volatile memory module, and
• the control circuit is further used to store an initial delay setting of the data strobe signal according to delay information of the data strobe signal in response to the shift value being greater than a threshold value.