Signal transmission circuit, signal reception circuit and signal transmission / reception circuit, signal transmission method, signal reception method, signal transmission / reception method, semiconductor integrated circuit and control method thereof

摘要

The present invention is intended to provide a receiving circuit that operates synchronously even if the transmitted clock signal is of a small width. The first differential clock signals UCLK and UXCLK of the small amplitude voltage based on the power supply potential and the second differential clock signals LCLK and LXCLK of the small amplitude voltage based on the ground potential are transmitted. The PMOS transistor P1 of the CMOS inverter circuit constituting the inverter circuit 72 as the signal receiving circuit receives the first differential clock signal as its gate electrode and the source electrode thereof and the NMOS transistor N1 receives the first differential clock signal as its gate And receives the second differential clock signal as an electrode and a source electrode. Therefore, when the potential of the differential clock signal changes, the potentials of the gate electrode and the source electrode of the transistors P1 and N1 transit in opposite directions to each other to be surely blocked. Therefore, a low consumption current can be obtained as the differential clock signal has a small amplitude.