Jetson AGX Xavier Series Product
DG-09840-001_v2.5 | 114
Chapter 14.
Fan
Jetson AGX Xavier 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 AGX Xavier Module Pin Mux
:
•
This is used to configure the
FAN_PWM
and
FAN_TACH
pins. The
FAN_PWM
pin is
configured as
GP_PWM4
. The
FAN_TACH
pin is configured as
NV_THERM_FAN_TACH
.
Xavier Technical Reference Manual
:
•
Functional descriptions and related registers can be found in the TRM for the
FAN_PWM (PWM chapter) and FAN_TACH (Tachometer chapter) functions.
Jetson AGX Xavier Developer Kit Carrier Board Specification
:
•
The document contains the maximum current capability of the VDD_5V supply in the
Interface Power chapter. The fan is powered by this supply on the Jetson AGX Xavier
Developer Kit carrier board.
Table 14-1.
Jetson AGX Xavier Fan Pin Description
Pin #
Module Pin
Name
SoC Signal
Usage/Description
Usage on NVIDIA
Carrier Board
Direction
Pin Type
K62
FAN_PWM
TOUCH_CLK
Fan Pulse Width Modulation signal
Fan Circuit/Connector
Output
CMOS – 1.8V
E54
FAN_TACH
SOC_GPIO22
Fan Tachometer signal
Fan Circuit/Connector
Input
Notes:
1.
In the Type/Dir column, Output is from Jetson AGX Xavier. Input is to Jetson AGX Xavier. Bidir is for Bidirectional signals.
2.
The direction indicated for FANx is associated with their use as Fan PWM/Tach. The pins support GPIO functionality, so support both input and
output operation (bidirectional).
