HD3SS3220_15 Datasheet, PDF (23/43 Pages) Texas Instruments – HD3SS3220 USB Type-C DRP Port Controller with SuperSpeed 2:1 MUX

www.ti.com
8 Application and Implementation
HD3SS3220
SLLSES1 – DECEMBER 2015
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
8.1 Application Information
HD3SS3220 can be used to design USB Type-C systems implementing DRP, DFP and UFP port for applications
requiring USB SupeSpeed or SuperSpeedPlus. The device supports native USB-C power handshake for power
negotiation up to 15 W. HD3SS3220 can advertise 900 mA, 1.5 A and 3 A current capability as DFP (provider)
and detect these settings as UFP (consumer).
Use of I²C is optional but strongly encouraged and provides additional control of the device and status of the
USB-C interface resulting robust and flexible system implementation. A constant I^2C polling is not required and
device provides an interrupt signal for servicing microprocessor.
HD3SS3220 mux channels have independent adaptive common mode tracking allowing RX and TX paths to
have different common mode voltage simplifying system implementation and avoiding inter-op issues.
Layout for SS signals to USB-C connector needs to be adjusted based on receptacle type.
NOTE
HD3SS3220 mux does not provide common mode biasing for the channel. Therefore it is
required that the device is biased from either side for all active channels. Also note that
mux channels are for differential SS signals only.
If power support larger than 15W is required USBPD function is needed and not supported
by this device. If split data/power role is desired such as USB host but power consumer or
USB device but power provider, an USBPD function is needed as well.
Copyright © 2015, Texas Instruments Incorporated
Product Folder Links: HD3SS3220
Submit Documentation Feedback
23