| 摘要 |
PROBLEM TO BE SOLVED: To suppress deterioration in signal waveform quality caused by an impedance discontinuous part that exists in the middle of a transmission path in a fast-speed signal transmission system for transmitting and receiving a synchronous high-speed pulse signal through one transmission path. SOLUTION: In the signal transmission system for transmitting and receiving a synchronous high-speed pulse signal through one transmission path 13 between a transmitting side board 11, on which a transmitting side semiconductor device 112 is mounted, and a receiving side board 12, on which a receiving side semiconductor device 122 is mounted, In the transmitting side substrate 11, a connector 113 is mounted and a PCB wiring 114 is formed in a transmission path from the transmitting side semiconductor device 112 to the connector 113. The wiring length of the PCB wiring is set so as to make the round-trip transmission time of a signal propagating on the PCB wiring to be 1/4 or 1/4+n/2 (n is a positive integer) of a switching period of a pulse signal. COPYRIGHT: (C)2009,JPO&INPIT
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