Patent ID: 8948276
Filing Date: 2015-02-03
Classification: H01L,H04L

Abstract:
1. A semiconductor device comprising: a transmitting circuit that operates in a first power supply system and outputs a pulse signal based on an input data signal and an input first retransmission request signal; a receiving circuit that operates in a second power supply system different from the first power supply system and restores a delayed data signal based on the pulse signal; and an insulation coupler that couples the transmitting circuit and the receiving circuit by a magnetic field or an electric field, wherein the transmitting circuit generates the delayed data signal and a first delayed retransmission request signal by delaying the input data signal and the first retransmission request signal, respectively, and outputs the pulse signal at an edge of the delayed data signal and at an edge of the first delayed retransmission request signal and prohibits output of the pulse signal at the edge of the first delayed retransmission request signal during a first specified period from a first time before the edge of the delayed data signal to a second time after the edge of the delayed data signal.