8.3.2 USB-C SBU Muxing

Figure 8-5 shows an application block diagram that implements SBU cross-muxing in a USB Type-C interface

for implementing DisplayPort (DP) Alternate mode using the TMUXHS221. Note that the device has adequate

bandwidth to support fast Auxiliary (AUX) signals. It is also capable of handling asymetric biasing for DP AUX

signals.

TMUXHS221

D+

D-

DB+

DB-

DA+

DA-

SEL

OEn

USB-C

Port

VCC

GND

1

F

0.1

F

DP Auxiliary

SBU

Figure 8-5. USB Type-C SBU Signals Muxing

8.3.3 Switching USB Port

Figure 8-6 shows an application block diagram where TMUXHS221 is used to switch the USB port in between a

handheld portable device and its connected dock.

USB Host

Handheld Portable Device

Dock

USB Port A

Figure 8-6. Switching USB Port

www.ti.com

TMUXHS221

SLASF52A – AUGUST 2022 – REVISED NOVEMBER 2022

Copyright © 2022 Texas Instruments Incorporated

Submit Document Feedback

13

Product Folder Links: TMUXHS221