SLVUC03 November 2022 TPS25762-Q1 , TPS25772-Q1
This schematic is SS4 sub-schematic of the main schematic. Figure 6-9 shows the HUB circuit of TPS25762Q1EVM-146 and TPS25772Q1EVM-149. R141 is installed and R142 is not installed to disable the USB mux(U12). As Figure 6-9 shows, the DP/DM of Type-C connector are not connected to HUB, so there is no data connection from the USB micro-B connector(J16) to port A and port B on the TPS25762Q1EVM-146 and TPS25772Q1EVM-149.
Figure 6-10 shows the HUB circuit of TPS25772Q1EVM-150. R142 is installed and R141 is not installed to enable the USB mux(U12). Using pins 15 and 16 of J7 on Figure 6-6 to set USB_SEL can select DP/DM of Type-C connector to HUB or to TPS25762/72-Q1. The USB_SEL is pulled low by default, so the data lines are connected from USB micro-B connector to the Type-C connectors of port A and port B. When pins 15 and 16 of J7 are shorted, the TPS25762/72-Q1 is configured as firmware update mode, the USB mux will connect DP/DM from the Type-C connector to TPS25762/72-Q1.
The HUB IC(U13) also provides a data path from USB micro-B connector to TIVA. This allows configuration, monitoring, and firmware update through USB micro-B connector.