Signal line compensation method and apparatus thereof
A technology of compensation method and compensation device, which is applied in the direction of printed circuit components, etc.
Inactive Publication Date: 2012-06-13
SUGON INFORMATION IND
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[0013] Aiming at the problem that the compensation of the signal line pairs cannot be realized in the real sense in the related art, the present invention proposes a signal line compensation method and device, which can optimize the compensation of the signal line, so that the extension area of the signal line can be avoided as much as possible. Asynchronous, to achieve true signal compensation
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[0033] According to an embodiment of the present invention, a signal line compensation method is provided, which is used for compensating a signal line pair composed of a first signal line and a second signal line that are connected to each other.
[0034] Such as image 3 As shown, the signal line compensation method according to the embodiment of the present invention includes:
[0035] Step S301, determining the length difference between the extension of the first signal line and the second signal line;
[0036] Step S303, perform signal line compensation at the position where the first signal line and the second signal line are out of sync, and / or perform signal line compensation near the connector or chip connected to the signal line, wherein, close to the signal line The signal line compensation at the connector or chip where the line pair is connected refers to the signal compensation outside the chip or connector, and try to avoid the signal compensation under the con...
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The invention discloses a signal line compensation method and an apparatus thereof. The method comprises the following steps that: a difference between a length of extension of a first signal line and a length of extension of a second signal line is determined; and according to the determined signal line length difference, signal line compensation is carried out preferentially at a position where the first signal line is not synchronized with the second signal line; and / or signal line compensation is carried out on a position that approaches a connector or a chip, wherein the connector or the chip is connected with the signal line pair. According to the invention, optimization is carried out by compensation on signal lines. Compensation is preferentially carried out on a position where signals are not synchronized; or signal line compensation can be preferentially carried out as soon as possible at a position when there is a connector. And it can be determined how to select a compensation mode particularly according to space of a wiring area, so that signal compensation can be realized in a real sense.
Description
technical field [0001] The present invention relates to the field of circuit design, and in particular, to a signal line compensation method and device. Background technique [0002] With the rapid development of the electronics industry, the word high-speed has become a popular word in the IT industry, and the speed of electronic products has also risen from M to G. At present, the switching speed of some products has reached 20G, which poses a greater challenge to product design, so the design of the PCB layout (Layout) also plays a vital role. In high-speed circuit design, signal integrity must be considered. In order to ensure signal integrity, signal line compensation is often used, that is, impedance matching. Impedance matching is related to the poor quality of the signal. If the impedance characteristics are discontinuous due to the mismatch between the source and end impedance of the signal, overshoot and ringing will inevitably occur. Signal degradation will easil...
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IPC IPC(8): H05K1/02
Inventor 王影李继萍王卫钢
Owner SUGON INFORMATION IND