PCA9641 Description
The PCA9641 is a 2-to-1 I2C master demultiplexer with an arbiter function. It is designed for high reliability dual master I2C-bus applications where correct system operation is required, even when two I2C-bus masters issue their mands at the same time. The arbiter will select a winner and let it work uninterrupted, and the losing master will take control of the I2C-bus after the winner has finished.