Power Supply And Sequencing - Nvidia Jetson Orin NX Design Manual

Module Pin
Pin # Name Orin Pin Name
178 MOD_SLEEP* SF_PWR_SOC_E
N
210 CLK_32K_OUT (Power
sequencer 32K
CLK Out)
217 GND −
(Module ID)
Notes:
1. Pull-up voltage on the carrier board on the module ID strap pin is up to the carrier board designer.
2. In the Direction column, Output is from Jetson Orin NX. Input is to Jetson Orin NX. Bidir is for Bidirectional signals.
3. The directions for FORCE_RECOVERY* and SLEEP/WAKE* signals are true when used for those functions. Otherwise as GPIOs,
the direction is bidirectional.
6.1

Power Supply and Sequencing

The carrier board receives the main power source and uses this to generate the enable to
Jetson Orin NX module (
stable and the associated decoupling capacitors have charged. The carrier board supplies are
not enabled at this time. Once
ON. When the module Power-ON sequence has completed, the
(pulled high on module) and this is used by the carrier board to enable its various supplies.
Note: The carrier board cannot drive high or pull high any signals that are associated with the
module when the module rails are off. If the designer cannot guarantee a signal will not be
driven or pulled high, then either the power rail related to that signal should be left off, or the
signals would need to be buffered to isolate them from the module pins. The buffers should only
be enabled towards the module when SYS_RESET* goes high.
PRELIMINARY INFORMATION
NVIDIA Jetson Orin NX
Usage and Description
supply enable when pulled high by the module
when module power sequence is complete.
Used to ensure proper power on/off sequencing
between module and carrier board supplies. 1kΩ
pull-up to 3.3V on the module.
Module Sleep. When active (low), indicates
module has gone to Sleep (SC7) mode.
Sleep/Suspend clock. 1kΩ pull-up to 1.8V on the
module.
Module ID strap: Indicates whether the module
is a legacy type supporting only 5V on VDD_IN
(tied to GND on the module) or an advanced type
supporting from 5V to 20V on VDD_IN (floating
on the module - pulled high on the carrier
board. See Note 1).
) after the carrier board has ensured the main supply is
POWER_EN
is driven active (high), the module begins to Power-
POWER_EN
Recommended
Usage Direction
Control of Output
devices to be
disabled in sleep
mode.
Sleep/suspend Output
clock for devices
such as M.2 Key
E
Pulled high on
Not
the carrier
applicable
board to indicate
Orin NX is an
advanced type
supporting wide
voltage input
range on
VDD_IN.
signal is released
SYS_RESET*
DG-10931-001_v0.1 | 14
Power
Pin Type
CMOS –
1.8V
CMOS –
1.8V
Not
applicable.
See Note 1