Fan; Figure 12-7. Jetson Orin Nx Fan Connections; Table 12-11. Can Signal Connections; Table 12-12. Jetson Orin Nx Fan Pin Descriptions - Nvidia Jetson Orin NX Design Manual

Table 12-11. CAN Signal Connections
Module Pin Name
CAN_TX
CAN_RX
12.5

Fan

Jetson Orin NX provides PWM and Tachometer functionality for controlling a fan as part of the
thermal solution. Information on the PWM and Tachometer pins and functions can be found in
the following locations:
Jetson Orin NX Pin Mux

This is used to configure
•
used for
FAN_PWM
as a GPIO.
Orin (SoC) Technical Reference Manual (TRM)

Functional descriptions and related registers can be found in the TRM for the
•
(PWM chapter).
Table 12-12. Jetson Orin NX Fan Pin Descriptions
Module Pin
Pin # Name Orin Signal
230 GPIO14 GP31_PWM3
208 GPIO08 GP62
Notes:
1. In the Direction column, Output is from Jetson Orin NX. Input is to Jetson Orin NX. Bidir is for Bidirectional signals.
2. The direction indicated for GPIO014 and GPIO08 is associated with their use as Fan PWM/Tach. The pins support GPIO
functionality, so support both input and output operation (bidirectional).
Figure 12-7. Jetson Orin NX Fan Connections
Jetson
SoC – Fan
GP62
GP31_PWM3
PRELIMINARY INFORMATION
NVIDIA Jetson Orin NX
Type Termination
O
I
(PWM) for
GPIO14
is configured as
GP_PWM6
Usage and Description
Fan PWM
Fan tachometer
GPIO08 FAN_TACH
208
GPIO14 FAN_PWM
230
Description
CAN Transmit: Connect to matching pin of device
CAN Receive: Connect to Peripheral pin of device
and GPIO08 for
FAN_PWM
. The pin used for
Recommended
Usage
Fan
Fan
SM2309
PSAC-TRG
VDD_5V_IN
S D
G
VDD_1V8
D
DMN26
10kΩ
G
DOUFB4
S
VDD_5V_IN
G
D
DMN26
G
DOUFB4
S
Miscellaneous Interfaces
. The pin
FAN_TACH
is configured
FAN_TACH
FAN_PWM
Direction Pin Type
Output (note) CMOS – 1.8V
Input (note) CMOS – 1.8V
100uH
BAT54C
VDD_5V_IN
Fan
Header
1
10uF 0.1uF
2
3
D
4
DMN26
DOUFB4
S
DG-10931-001_v0.1 | 68