Texas Instruments TUSB422 EVM, Quick Start Manual

Page: 3 / 10

www.ti.com
Header Settings
3 SLLU252 – September 2016
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
TUSB422 EVM Quick Start Guide
4 Header Settings
There are several headers provided for the EVM and device configuration purposes. Refer to the board
schematics in the datasheet (
SLLSEW6 ) for details.
Table 2. Headers With SHUNT Configuration Options
Reference
Designator
Header Control
Function
Default SHUNT
Setting
Description
J7 BOOST5V OPEN When SHUNT is placed, 5 V is supplied to the board by the
LaunchPAD instead of the on-board regulator. Remove the SHUNT
on J10 if a SHUNT is to be placed on J7.
J4 BOOST3P3V OPEN When SHUNT is placed, 3P3V is supplied to the board by the
LaunchPAD instead of the on-board regulator. Remove the SHUNT
on J10 if a SHUNT is to be placed on J4.
J9 VCONN SHUNT ON 1-2 Connects VCONN output:
SHUNT ON 1–2: VCONN connected
SHUNT OFF: VCONN disconnected
J10 5V_VIN SHUNT ON 1-2 Connects 5-V source:
SHUNT ON 1–2: 5-V Source Connected
SHUNT OFF: 5-V source disconnected
J11 IO Pull-up Selection SHUNT ON 1-2 Configures TUSB422 pull-up voltage to 3P3V vs. 1P8V:
SHUNT ON 1-2: Pull-up voltage = 3P3V
SHUNT ON 2-3: Pull-up voltage = 1P8V
J14 HV VBUS Source
Selection
SHUNT ON 2-3 Configures high voltage VBUS source:
SHUNT ON 1-2: VBUS source = 15 V
SHUNT ON 2-3: VBUS source = 9 V
Table 3. Other Headers and Test Loops
Reference
Designator
Header Function Description
J15 CC1 and CC2 Probe CC1 and CC2 probe and debug
J5 and J6 LaunchPAD headers LaunchPAD connection
J13 5 V/VBATT input 5 V/VBATT external input. On-board 5-V input must be disconnected (remove J10
or SW1 in OFF position (position 2)).
J16 SBU1/SBU2 SBU1/SBU2 probe and debug
J2 Test header Various signal probe and debug. See schematics for details
LP4 USB Type-C connector
VBUS
Connects to USB Type-C connector VBUS for measurement and debug purposes.
LP6 TUSB422 VBUS Connects to TUSB422 VBUS input. Use the test loop to supply VBUS externally.
Make sure there is no other source driving TUSB422 VBUS.
LP1 TUSB422 VDD Connects to TUSB422 VDD. Remove R5 if external power supply is to be
connected to LP1 for current measurement purposes.
LP2 VDD Test loop for measuring VDD input. If an external power supply is to be used, an
on-board VDD source
must be removed. When R5 is removed, the device current
can be measured through LP2 and LP1.
LP7 VBUS power out When the EVM and TUSB422 is in VBUS SINK operation, VBUS output can be
measured via LP7.
LP1 and LP8 GND GND probe and debug purposes. Do not connect to power source.