XDS110-ET
Debug Probe
MCU
J101
Isolation
Block
JTAG and SWD
Application UART
3.3V Power
5V Power
MSP432P401R
Target MCU
XDS110-ETMSP432 Target
USB Connector
in out
LDO
BoosterPack Header
BoosterPack Header
USB
EnergyTrace
eUSCI_A0
Hardware
www.ti.com
8
SLAU597E–March 2015–Revised January 2018
Submit Documentation Feedback
Copyright © 2015–2018, Texas Instruments Incorporated
MSP432P401R SimpleLink™ Microcontroller LaunchPad™ Development Kit
(MSP
‑
EXP432P401R)
Reasons to open these connections:
• To remove any and all influence from the XDS110-ET debug probe for high accuracy target power
measurements
• To control 3-V and 5-V power flow between the XDS110-ET and target domains
• To expose the target MCU pins for other use than onboard debugging and application UART
communication
• To expose the UART interface of the XDS110-ET so that it can be used for devices other than the
onboard MCU.
Figure 6. XDS110-ET Isolation Block
2.3.2 Application (or "Backchannel") UART
The XDS110-ET provides a "backchannel" UART-over-USB connection with the host, which can be very
useful during debugging and for easy communication with a PC.
The backchannel UART allows communication with the USB host that is not part of the target application's
main functionality. This is very useful during development, and also provides a communication channel to
the PC host side. This can be used to create GUIs and other programs on the PC that communicate with
the LaunchPad development kit.
Figure 6 shows the pathway of the backchannel UART. The backchannel UART eUSCI_A0 is independent
of the UART on the 40-pin BoosterPack plug-in module connector eUSCI_A2.
To Next Page
Loading...
Need help?
General
