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PRELIMINARY INFORMATION
NVIDIA Jetson Orin NX DG-10931-001_v0.1 | 71
13.3 Pins Pulled or Driven High During
Power-On
The Jetson Orin NX is powered up before the carrier board (See Section 6.1 for power
sequencing). Table 13-1 lists the pins on Jetson Orin NX that default to being pulled or driven
high. Care must be taken on the carrier board design to ensure that any of these pins that
connect to devices on the carrier board (or devices connected to the carrier board) do not
cause damage or excessive leakage to those devices. Some of the ways to avoid issues with
sensitive devices are:
External pull-downs on the carrier board that are strong enough to keep the signals low
are one solution, given that this does not affect the function of the pin.
Buffers or level shifters can be used to separate the signals from devices that may be
affected. The buffer or shifter should be disabled until the device power is enabled.
Table 13-1. Pins Pulled or Driven High by Orin Prior to SYS_RESET*
Inactive
Jetson Orin NX Pin Power-On Reset Default Pull-up Strength (kΩ)
MOD_SLEEP* Driven high na
FORCE_RECOVERY* Internal pull-up ~50
Table 13-2. Pins with External Pull-Ups to Supply on before SYS_RESET*
Inactive
Jetson Orin NX
Pin
Pull-Up Supply
Voltage (V)
External
Pull-Up (kΩ)
Jetson Orin NX
Pin
Pull-Up Supply
Voltage (V)
External
Pull-Up (kΩ)
I2C0_SCL/SDA 3.3 1.5 PCIE[3:0]_CLKREQ* 3.3 47
I2C1_SCL/SDA 3.3 1.5 PCIE[3:0]_RST* 3.3 4.7
I2C2_SCL/SDA 1.8 1.5 PCIE_WAKE* 3.3 100
CAM_I2C_SCL/SDA 3.3 1.5 HDMI_CEC 1.8 10
GPIO00 1.8 100
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