Spi; Table 12-3. I2C Signal Connections; Table 12-4. Jetson Orin Nx Spi Pin Descriptions - Nvidia Jetson Orin NX Design Manual

Table 12-3. I2C Signal Connections
Module Pin Name Type
I2C0_SCL/SDA I/OD
I2C1_SCL/SDA I/OD
I2C2_SCL/SDA I/OD
CAM_I2C_SCL/SDA I/OD
Notes:
1. If some devices require a different voltage level than others connected to the same I2C bus, level shifters are required.
2. For I2C interfaces that are pulled up to 1.8V, disable the RCV_33_18_SEL option for these pads. For I2C interfaces that are pulled
up to 3.3V, enable the RCV_33_18_SEL option. The RCV_33_18_SEL option is selected in the Pinmux registers.
12.2

SPI

The Jetson Orin NX brings out two of the Orin SPI interfaces. See Figure 12-2.
Table 12-4. Jetson Orin NX SPI Pin Descriptions
Module Pin
Pin # Name Orin Signal
91 SPI0_SCK GP47_SPI1_SCK
93 SPI0_MISO GP48_SPI1_MISO
89 SPI0_MOSI GP49_SPI1_MOSI
95 SPI0_CS0* GP50_SPI1_CS0
97 SPI0_CS1* GP51_SPI1_CS1
106 SPI1_SCK GP36_SPI3_SCK
108 SPI1_MISO GP37_SPI3_MISO
104 SPI1_MOSI GP38_SPI3_MOSI
110 SPI1_CS0* GP39_SPI3_CS0
112 SPI1_CS1* GP40_SPI3_CS1
Notes: In the Direction column, Output is from Jetson Orin NX. Input is to Jetson Orin NX. Bidir is for Bidirectional signals.
PRELIMINARY INFORMATION
NVIDIA Jetson Orin NX
Termination
1.5kΩ pull-ups to VDD_3V3 on
the module.
1.5kΩ pull-ups to VDD_3V3 on
the module.
1.5kΩ pull-ups to VDD_1V8 on
the module.
1.5kΩ pull-ups to VDD_3V3 on
the module.
Usage and Description
SPI 0 Clock
SPI 0 Initiator In / Target Out
SPI 0 Initiator Out / Target In
SPI 0 Chip Select 0
SPI 0 Chip Select 1
SPI 1 Clock
SPI 1 Initiator In / Target Out
SPI 1 Initiator Out / Target In
SPI 1 Chip Select 0
SPI 1 Chip Select 1
Miscellaneous Interfaces
Description
I2C #0 Clock and Data. Connect to CLK and Data pins of any
3.3V devices
I2C #1 Clock and Data. Connect to CLK and Data pins of 3.3V
devices.
I2C #2 Clock and Data. Connect to CLK and Data pins of any
1.8V devices
Camera I2C Clock and Data. Connect to CLK and Data pins
of any 3.3V devices
Recommended
Usage
SPI #0 Device #0
or #1
SPI #0 Device #0
SPI #0 Device #1
SPI #1 Device #0
or #1
SPI #1 Device #0
SPI #1 Device #1
DG-10931-001_v0.1 | 63
Direction Pin Type
CMOS –
Bidir
1.8V