Nvidia Jetson Orin NX Series User Manual

Power
PRELIMINARY INFORMATION
Jetson Orin NX Series and Jetson Orin Nano Series DG-10931-001_v1.1 | 24
6.1.1.3 Power-Off -> Power-On (Auto-Power-On Case)
In the auto power on case, the MCU enables POWER_EN as soon as the user connects the main
power source. This case is selected when MCU ACOK is driven high.
The signal representing the power button to the Orin module (SLEEP/WAKE* pin) will continue
following the power button behavior. However, once the power ON sequence is initiated by the
connection of the main power source, and ACOK is driven high (by push-pull driver powered
from 3V3_AO), the power button signals will not affect the MCU behavior until the PWR_GOOD
signal verification is complete.
Figure 6-9. Power-Off to On Sequence Auto Power-On Case
POWER_EN
SLEEP/WAKE*
SYS_RESET*
ACOK
VDD_DCIN
SHUTDOWN_REQ*
T_PE_RST
Carrier Board 1.8V/
3.3V Supplies
T_AC_DET + T_VPWR_ON_AC
Table 6-4. Power-Off to On Timing Auto Power-On Case
Timing
Parameter
Typical
Units
T_AC_DET
ACOK assertion detect (de-bounce only)
20
ms
T_VPWR_ON_AC
Delay from ACOK detected high with main power source applied to
POWER_EN
80
ms
T_PE_RST
SYS_RESET* inactive delay from POWER_EN rising edge
80
ms
6.1.1.4 Power-On -> Power-Off (Long Power Button Press)
With the system in power-on state, the user holds the power button for either more than about
4 seconds (medium button press) or about 10 seconds (long button press). The same button
signal is relayed to Orin module through the POWER_EN signal. For the medium button press
case, the system will do a software-controlled shutdown. For the long button press case,
system is forced to shut down at about the 10 second mark without software involvement.

Nvidia Jetson Orin NX Series Specifications

General

Brand	Nvidia
Model	Jetson Orin NX Series
Category	Control Unit
Language	English