PCB wiring method for compensating signal delay, PCB and electronic equipment

Abstract

The invention relates to the field of PCB wiring, and particularly discloses a PCB wiring method for compensating signal delay, a PCB and electronic equipment, and the method comprises the steps: enabling a first signal line to be wired on a first board layer; routing a second signal line on a second board layer; if the first signal line and the second signal line meet the signal delay requirement after being wired on the corresponding board layer at the initial length, the second signal line does not need to be wound at the same length; if the signal delay requirement is not met after the first signal line and the second signal line are wired on the corresponding board layers with the initial lengths respectively, the first signal line or the second signal line is wound to be equal in length according to the signal delay of the first signal line and the second signal line. According to the invention, the signal lines in the same group are wired in different board layers, the signal delay is compensated by utilizing different unit length delays of different board layers, the winding length is shortened or winding is not needed, the occupied space is saved, and the time sequence requirement of signals is met.

Description

technical field [0001] The invention relates to the field of PCB board routing, in particular to a PCB board routing method for compensating signal delay, a PCB board and electronic equipment. Background technique [0002] With the development of electronic information technology, PCB boards are developing in the direction of high speed and high density, and the requirements for high-speed signals are getting higher and higher. When the clock signal reaches a certain frequency, it is necessary to perform timing processing on parallel signals. For this type of bus, usually multiple data signals are sampled based on the same clock, and each clock cycle may be sampled multiple times. The delay of the signal will have a great impact on the timing. In order to ensure that the data sampling point can be correct To collect all signal values, it is necessary to control and compensate for the delay of the signal. [0003] At present, on the PCB board, the commonly used method to ach...

AI Technical Summary

Problems solved by technology

The design of equal winding length will occupy a large space on the PCB board. When the number of signal lines is large or the space is limited, there will be insufficient winding space, so that delay compensation cannot be performed, and the signal requirements cannot be satisfied. timing requirements

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