HD3SS2522 Datasheet, PDF (12/25 Pages) Texas Instruments – USB Type-C SS MUX

HD3SS2522
SLLSEM6B – APRIL 2015 – REVISED AUGUST 2015
8 Application and Implementation
www.ti.com
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
The HD3SS2522 is a high speed switch with integrated DFP CC controller. The HD3SS2522 can be
implemented in any USB Type-C DFP applications in conjunction with VBUS and VCONN switches.
8.2 USB Type-C DFP Typical Application
This section depicts the typical Type-C system with a USB Host or Hub. The Type C receptacle in this system is
a DFP only providing VBUS and VCONN upon the connection of UFP device. The HD3SS2522 DFP CC
controller determines the UFP attachment and provides VBUS and VCONN based upon the Type-C specification
state diagram and timing definition.
VBUS
VBUS Switch
USB Host /
Hub
CC_OUT
CC_IN
VCTRL2
VCTRL1
VBUS_EN
TX
RX
D+
D-
5V
Vconn Switch
5V
Vconn Switch
CC Switch
CC_SEL
CC1
CC2
CC Pull-up Resistor value
per Type C Specification
Current Advertisement
definition
Digital Logic
SS_EN
SS_SEL
2:1 High
Speed switch
HD3SS2522
Type C
Receptacle
TX1
RX1
TX2
RX2
This Figure represents high level block diagram of the Type C DFP implementation not a circuit level implementation.
Figure 3. USB Type-C DFP
12
Submit Documentation Feedback
Product Folder Links: HD3SS2522
Copyright © 2015, Texas Instruments Incorporated