| 摘要 |
PROBLEM TO BE SOLVED: To provide a semiconductor integrated circuit capable of reducing the number of input/output terminals, while enabling correct measurement of the resistance value of a terminal resistor. SOLUTION: The semiconductor integrated circuit 100 is equipped with a differential input receiver circuit 4, whose output is connected to a logic circuit 1 and which is provided for receiving a signal that propagate through a transmission line and outputting the signal to the logic circuit 1, and a control circuit 16. In a test operating mode for measuring the resistance value of the terminal resistor 5, a control circuit 16 turns off a first switching circuit 8 and a second switching circuit 9, and additionally, turns on a third switching circuit 10 and a fourth switching circuit 11. In a normal operating mode for performing normal operation, the control circuit turns on the first switching circuit 8 and the second switching circuit 9, as well as, turns off the third switching circuit 10 and the fourth switching circuit 11. COPYRIGHT: (C)2008,JPO&INPIT
|
