NVIDIA Jetson Xavier NX DG-09693-001_v1.7 | 11
Chapter 5. Power
Power for the module is supplied on the VDD_IN pins and is nominally 5.0V (see the Jetson
Xavier NX Data Sheet for supply tolerance and maximum current).
CAUTION: Jetson Xavier NX is not hot-pluggable. Before installing or removing the module, the
main power supply (to VDD_IN pins) must be disconnected and adequate time allowed for the
various power rails to fully discharge.
Table 5-1. Power and System Pin Description
Pin #
Module Pin
Name
Xavier Pin
Name
Usage/Description
Recommended
Usage
Directio
n
Pin Type
251
260
VDD_IN − Main power – Supplies PMIC and other regulators Main DC input Input 5.0V
235 PMIC_BBAT −
PMIC Battery Back-up. Optionally used to provide
back-up power for the Real-Time-Clock (RTC).
Connects to Lithium Cell or super capacitor on
Carrier Board. PMIC is supply when charging cap
or coin cell. Super cap or coin cell is source when
system is disconnected from power. Charging is
enabled by default in software. If non-rechargeable
battery is to be used, charging should be disabled.
Battery Back-up
using coin cell.
Bidir
Input
Range:
1.65V-5.5V
Output
Options:
2.5V, 3.0V,
3.3V, 3.5V
214
FORCE_
RECOVERY*
SOC_GPIO00
Force Recovery strap pin. Held low when
SYS_RESET* goes high (i.e. during power-on)
places system in USB recovery mode
System Input
CMOS –
1.8V
240 SLEEP/WAKE* POWER_ON
Sleep/Wake. Configured as GPIO for optional use
to indicate the system should enter or exit sleep
mode.
System Input
CMOS –
5.0V
233
SHUTDOWN_
REQ*
−
When driven/pulled low by the module, requests
the carrier board to shut down. ~5kΩ pull-up to
VDD_IN (5V) on the module.
System Output
Open
Drain,
5.0V
237 POWER_EN
(PMIC EN0
through
converter logic)
Signal for module on/off: high level on, low level
off. Connects to module PMIC EN0 through
converter logic. POWER_EN is routed to a Schmitt
trigger buffer on the module. A 100kΩ pulldown is
also on the module.
System Input
Analog
5.0V
239 SYS_RESET*
SYS_RESET_IN_
N
Module Reset. Reset to the module when driven
low by the carrier board. Used as carrier board
supply enable when pulled high by the module
System Bidir
Open
Drain,
1.8V
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