SLASF51 February 2024 TMUXHS4446
PRODUCTION DATA
The TMUXHS4446 can toggle between GPIO and I2C control modes through the MODE0 pin being driven high or low. When set to GPIO mode (MODE0 = low), the CONF[2:0] pins are driven either high or low to set the switch configurations. When set to I2C mode (MODE0 = high), an external I2C controller (for example, a PD controller) writes into the TMUXHS4446 register bits through the SDA and SCL pins to set mux configurations and device control.
The MODE1 pin is used to control the logic level of the I2C data. If MODE1 is high, then the logic level is 3.3V and 1.8V if MODE1 is low.