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Figure 11-8.
Debug UART Connections
Jetson
Tegra
DEBUG
UART1_TX
UART1_RX
Note: If level shifter is implemented, pull-up is required on the RXD line on the non-Jetson TX2
NX side of the level shifter. This is required to keep the input from floating and toggling when no
device is connected to the debug UART.
11.6.1
Debug UART
The UART2 interface is intended to be used for debug purposes.
Table 11-11.
Debug UART Connections
Module Pin Name
Type
UART2_TXD
O
UART2_RXD
I
NVIDIA Jetson TX2 NX
VDD_1V8
0.1uF
UART 2_TXD
236
UART 2_RXD
238
100kΩ
Termination
If level shifter implemented, 100kΩ to supply
on the non-Jetson TX2 NX side of the device.
VDD_3V3_SYS
0.1uF
Level Shifter
VCCA
VCCB
A1
B1
A2
B2
OE
GND
Description
UART #2 Transmit: Connect to RX pin of
serial device
UART #2 Receive: Connect to TX pin of serial
device
Miscellaneous Interfaces
RXD_LS
TXD_LS
DG-10141-001_v1.1 | 65
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