8.2.2 Detailed Design Procedure

A typical usage of the TUSB544 device is shown in Figure 35. The device can be controlled either through its GPIO pins or through its I²C interface. In the example shown below, a Type-C PD controller is used to configure the device through the I²C interface. In I²C mode, the equalization settings for each receiver can be independently controlled through I²C registers. For this reason, all of the equalization pins (UEQ[1:0] and DEQ[1:0]) can be left unconnected. If these pins are left unconnected, the TUSB544 7-bit I²C slave address will be 12h because both UEQ1/A1 and UEQ0/A0 will be at pin level "F". If a different I²C slave address is desired, UEQ1/A1 and UEQ0/A0 pins should be set to a level which produces the desired I²C slave address.

Figure 35. Typical Application Circuit