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PCAMUX(4) Device Drivers Manual PCAMUX(4)

pcamuxPhilips PCA954[678] I2C switch/mux

pcamux* at iic?
iic* at pcamux?

The pcamux driver provides support for the Philips PCA954[68] I2C switch and Philips PCA9547 I2C mux, which is used with the iic(4) framework.

iic(4), intro(4)

The pcamux driver first appeared in OpenBSD 6.8.

The pcamux driver was written by Mark Kettenis <>.

November 13, 2020 OpenBSD-current