很容易实现双主I2C总线应用上的隔离 NXP 2-to-1 I2C-bus master selector PCA9541 with interrupt logic and reset Easily isolate each master in dual- master I2C-bus applications This versatile bus selector ensures continuous operation in dual-master configurations. When a master fails or a controller card is removed for maintenance, this device makes it easy to switch from the primary to the back-up master. Key features The NXP PCA9541 is used to select a bus master in I2C-bus 4 I2C-bus interface logic systems that use two masters. In a typical co……