JAJSNA4A May 2024 – September 2024 TUSB521-Q1
PRODUCTION DATA
Figure 8-2 shows a typical usage of the TUSB521-Q1 device. The device can be controlled either through the GPIO pins or the 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 (EQ[1:0], SSEQ[1:0]) can be left unconnected. If these pins are left unconnected, the TUSB521-Q1 7-bit I2C target address is 0x12 because both A1 and SSEQ0/A0 are at pin level "F". If a different I2C target address is desired, set the A1 and SSEQ0/A0 pins to a level which produces the desired I2C target address.