Method and device for designing snake-shaped winding in differential signal line

Abstract

The invention provides a method and a device for designing snake-shaped winding in a differential signal line. The method comprises the following steps: determining a length difference between a first signal line and a second signal line in the differential signal line; determining a winding quantity and a winding height of the snake-shaped winding for the first signal line according to the length difference, wherein a total length of the snake-shaped winding is equal to the length difference; determining first signal time delay of a signal transmitted on the first signal line according to the winding quantity and the winding height; determining second signal time delay of a signal transmitted on the second signal line; judging whether a difference value between the second signal time delay and the first signal time delay is smaller than a preset standard value or not; and if so, designing the snake-shaped winding for the first signal line according to the winding quantity and the winding height, and otherwise determining a winding quantity and a winding height of the snake-shaped winding for the first signal line according to the length difference. Through the scheme, the quality of signals transmitted on the differential signal line can be improved.

Description

technical field [0001] The invention relates to the technical field of electronic engineering, in particular to a design method and device for serpentine winding in a differential signal line. Background technique [0002] The differential signal line is used to transmit differential signals. The two signal lines of the differential signal line are used to transmit signals with equal amplitude but opposite directions. The difference between the signals on the two signal lines is used as the control signal, which is generally used to transmit CLK (clock ) signal, etc. [0003] Since it takes a certain amount of time for the signal to be transmitted in the line, in order to ensure that the signal receiving end can simultaneously receive the signals transmitted by the two signal lines in the differential signal line, it is necessary to ensure that the two signal lines included in the differential signal line have the same length. However, due to the distribution of many lines ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the method of designing serpentine winding in the differential signal line in the prior art, the shorter signal line is only wound in a serpentine shape according to the length difference between the two signal lines, without considering the number of winding wires and the number of winding wires. The unreasonable design of wire height, winding quantity and winding height will shorten the signal delay of the signal wire, resulting in poor quality of the signal transmitted by the differential signal wire

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