| 摘要 |
This ringing suppression circuit is connected to a transmission line (3) for transmitting a differential signal that changes into two value levels, high and low, by a pair of signal lines, and suppresses ringing which is produced along with the transmission of the signal. The ringing suppression circuit is provided with: a voltage driven-type single line-to-line switching element (15) connected between the pair of signal lines; a control unit (6) that, upon detecting that the level of the differential signal has changed, turns ON the line-to-line switching element and lowers the impedance between the signal lines; period detection units (10, 33, 43) that detect the length of a suppression period indicated by a setting signal that is inputted; and suppression period storage units (11, 54) that store the detected length of the suppression period. The pair of signal lines are provided with a high potential side signal line (3P) and a low potential side signal line (3N). The control unit turns ON the line-to-line switching element for the suppression period of the lengths which have been stored by the period storage units. |
