PCA9641 arbiter equivalent, 2-channel i2c-bus master arbiter.
* 2-to-1 bidirectional master selector
* Channel selection via I2C-bus
* I2C-bus interface logic; compatible with SMBus standards
* 2 active LOW interrupt.
where correct system operation is required, even when two I2C-bus masters issue their commands at the same time. The arb.
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