Routing common method for different impedance signal lines and PCB board
A PCB board and impedance signal technology, which is applied in the field of PCB wiring, can solve the problems of increasing PCB board production costs, affecting product efficiency and reliability, and reducing PCB board production yield, so as to reduce development costs and reduce high-speed wiring Quantity, size reduction area and effects of laminated layers
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[0023] The present invention will be further described below in conjunction with the drawings and specific embodiments.
[0024] A method for realizing the sharing of different impedance signal lines. The process is to connect the signal lines with different impedance values on the PCB board to the Cap capacitor, and then all the cap capacitors share the PCB Trace channel. The Cap The capacitor acts as a Bom switch for Bom switching, so that all the signal lines on the PCB board are combined into one.
[0025] The impedance value of the shared PCB Trace channel uses the average value of all signal line impedance values. When the average value is an integer value, the impedance value is the average value; when the average value is a non-integer value, the rounded integer value is used Is the impedance value.
[0026] The signal lines with different impedance values refer to SAS3.0 signal lines with trace impedance values of 100 ohm and PCIE signal lines with 85 ohms. Correspond...
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