Wire-length computing system and method in main-board wiring

Abstract

The system includes a computer and a database. The computer includes following modules: setting module in use for setting up packages; a segment definition module in use for selecting package as starting point package, end point package according to segment rule as well as defining starting point and end point for each segment; a net selection module for selecting a net to be calculated; a calculation module for calculating length of each segment and total length of net; a module for prompting calculation error if the said lengths are not accorded with defined specific lengths, or if a segment is not met to definition, then error information is unable to calculate it; save module for saving segment rules and stores calculated lengths to database; a conversion module is in use for converting calculated lengths in database file formal to report file format. The system is capable of calculating wiring lengths of wires in computer main board, and result is led in report forms.

Description

【Technical field】 [0001] The invention relates to a length calculation system and method, in particular to a system and method for the length of a mainboard wiring center line. 【Background technique】 [0002] As consumers have higher and higher requirements for electronic products, the integration of electronic components mounted on the motherboard is also getting higher and higher. When electronic components are working, electromagnetic waves will be generated to interfere with the operation of other nearby electronic components, which is called electromagnetic interference. As the integration of electronic components is getting higher and higher and their functions are increasing, the operating speed of electronic components is also getting faster and faster, and the operating frequency is also getting higher and higher, which makes the intensity of electromagnetic waves stronger and causes electromagnetic interference between electronic components. Interference is more s...

AI Technical Summary

Problems solved by technology

The calculation process of the line length is complex and requires a large amount of calculation. The calculation result not only affects the electromagnetic interference between the lines, but also affects the electromagnetic interference of other electronic components on the main board, which in turn affects the quality of the finished product of the host.

[0005] Furthermore, when any trace on the main board passes through a high-frequency signal, it will cause a time delay to the high-frequency signal.

Unequal length wiring and routing will also cause signal asynchrony and signal delay, which will cause system instability, such as clock routing

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