Printed circuit board and signal timing control method thereof

摘要

A printed circuit board includes a sending element, a plurality of receiving elements, and a control unit. The sending element is configured to generate a sending signal. The receiving elements are configured to receive a control signal respectively. The control unit is coupled to the sending element through a first wire and to the receiving elements through a plurality of second wires. The control unit is provided with a comparison table that stores related information of the second wires. When receiving the sending signal, the control unit generates the control signals according the related information of the second wires. At least one of the control signals is transmitted to the corresponding receiving element, and the rest of the control signals are delayed for a preset time and then transmitted to the rest of the receiving elements.

主权项

1. A printed circuit board, comprising:
a sending element, configured to generate a sending signal; a plurality of receiving elements, configured to receive a control signal respectively; and a control unit, coupled to the sending element through a first wire and to the receiving elements through a plurality of second wires, provided with a comparison table which stores related information of the second wires, configured to generate the control signals corresponding to the sending signal, according to the related information of the second wires after receiving the sending signal, at least one of the control signals being transmitted to the corresponding receiving element, the rest of the control signals being delayed for a preset time and then transmitted to the rest of the receiving elements, wherein the related information of the second wires comprises lengths of the second wires and transmission rates of the control signals transmitted in the second wires, the preset time is obtained through dividing a difference value between a first length and a second length by a transmission rate of one delayed control signal transmitted in corresponding one of the second wires, the first length is a length of the second wire in which the corresponding control signal which is not delayed is transmitted, and the second length is a length of the second wire in which the corresponding control signal which is delayed is transmitted, and the first length is greater than the second length.