Uart; Table 12-6. Spi Signal Connections; Table 12-7. Orin Module Uart Pin Descriptions - Nvidia Jetson Orin NX Series Product Manual

Parameter
Max trace length/delay (Branch-A) for MOSI, MISO, SCK and CS
2x-load star/daisy
Max trace length/delay skew from MOSI, MISO and CS to SCK
Note: Up to four signal vias can share a single GND return via
Table 12-6. SPI Signal Connections
Module Pin Names (Function)
SPI[1:0]_CLK
SPI[1:0]_MOSI
SPI[1:0]_MISO
SPI[1:0]_CS[1:0]*
12.3

UART

The Orin module brings three UARTs out to the main connector. See Figure 12-5 for typical
assignments of the three available UARTs.
Table 12-7. Orin Module UART Pin Descriptions
Module Pin
Pin # Name Orin Signal
99 UART0_TXD GP32_UART2_TXD
101 UART0_RXD GP33_UART2_RXD
103 UART0_RTS* GP34_UART2_RTS_N
105 UART0_CTS* GP35_UART2_CTS_N
203 UART1_TXD GP70_UART1_TX_BOOT2_STRAP
205 UART1_RXD GP71_UART1_RXD
207 UART1_RTS* GP72_UART1_RTS_N
209 UART1_CTS* GP73_UART1_CTS_N
236 UART2_TXD GP11_UART3_TXD
238 UART2_RXD GP12_UART3_RXD
Notes:
1. In the Direction column, Output is from Orin module. Input is to Orin module. Bidir is for Bidirectional signals.
2. The direction indicated for the UART pins except for is true when used for that function. Otherwise, these pins support GPIO
functionality and most can support both input and output (bidirectional) functionality. The exception is UART0_TXD, UART0_RTS*
and UART1_TXD. These have output-only buffers on the module to keep them from being affected by connected devices during
boot as they are associated with SoC strapping pins.
PRELIMINARY INFORMATION
Jetson Orin NX Series and Jetson Orin Nano Series
Type Termination Description
I/O SPI Clock.: Connect to peripheral CLK pins
I/O SPI Data Output: Connect to target peripheral MOSI pins
I/O SPI Data Input: Connect to target peripheral MISO pins
I/O SPI Chip Selects.: Connect one CSx* pin per SPI interface to
each target peripheral CS pin on the interface
Usage and Description
UART 0 Transmit
UART 0 Receive
UART 0 Request to Send
UART 0 Clear to Send
UART 1 Transmit
UART 1 Receive
UART 1 Request to Send
UART 1 Clear to Send
UART 2 Transmit.
UART 2 Receive
Miscellaneous Interfaces
Requirement Units
75 (472) mm (ps)
16 (100) mm (ps)
Recommended
Usage
UART general
(i.e. M.2 Key E)
UART general
Debug UART
DG-10931-001_v1.1 | 71
Notes
At any point
Direction Pin Type
Output
Input
Output
Input
Output
CMOS
1.8V
Input
Output
Input
Output
Input