| 摘要 |
PROBLEM TO BE SOLVED: To suppress increase in a wiring area, signal waveforms becoming blunt, and delays in signal transmission. SOLUTION: A selector circuit comprises pass transistor circuits 21a-21d for controlling the continuity of an input signal; a NAND circuit 22 for receiving the output signal outputted from respective pass transistor circuits 21a-21d via wires 24a, 24b to perform NAND operation; p-channel transistor circuits 23a, 23b for setting the signal level of the wires 24a, 24b, when the continuity of the input signal is broken by all pass transistor circuits 21a-21d connected to the same wires 24a, 24b; and a control signal generating circuit for generating a control signal that controls the pass transistor circuits 21a-21d so that only one input signal for allowing a circuit to conduct electricity is selected, and a control signal that controls the p-channel transistor circuits 23a, 23b so that the signal level of the wires 24a, 24b is set, by performing logic operation to the same input signal. COPYRIGHT: (C)2006,JPO&NCIPI
|
