Method and device for adjusting phase of bidirectional data strobe (DQS) signal

A device for adjusting phase of a bidirectional data strobe (DQS) signal, comprising:

• a first phase control circuit configured to receive a phase adjustment instruction and adjust the phase of the DQS signal according to a preset first adjustment rule;
• a first signal sampling circuit configured to receive a signal sampling instruction to sample the DQS signal, and return a sampling result of the DQS signal;
• a port physical layer circuit configured to determine whether the sampling result is correct and store a determination result;
• a second phase control circuit configured to, when functions of the first phase control circuit, the first signal sampling circuit and the port physical layer circuit are cyclically executed for a preset number of cycles, according to the determination result corresponding to the number of cycles, adjust the phase of the DQS signal according to a preset second adjustment rule.

A computer device, comprising:

• a processor, a memory coupled to the processor, and a computer program stored in the memory and executable on the processor;
• wherein the processor executes the computer program to perform:
• receiving a phase adjustment instruction, and adjusting phase of the DQS signal according to a preset first adjustment rule;
• receiving a signal sampling instruction to sample the DQS signal, and returning a sampling result of the DQS signal;
• determining whether the sampling result is correct, and storing a determination result;
• cycling steps of receiving the phase adjustment instruction to storing the determination result until a number of cycles reaches a preset number of times;
• according to the determination result corresponding to the number of cycles, adjusting the phase of the DQS signal according to a preset second adjustment rule;
• wherein before the adjusting phase of the DQS signal according to a preset first adjustment rule, the processor executes the computer program to perform:
• managing, by a state machine, an adjustment process of adjusting the phase of the DQS signal according to the preset first adjustment rule and the second adjustment rule.