Nvidia JETSON XAVIER NX

Miscellaneous Interfaces
NVIDIA Jetson Xavier NX DG-09693-001_v1.7 | 74
12.4 CAN
Jetson Xavier NX brings a single controlled area network (CAN) interface to the main
connector.
Table 12-9. CAN Pin Descriptions
Pin #
Module Pin
Name
Xavier Signal Usage/Description
Recommended
Usage
Directio
n
Pin Type
143 CAN_RX CAN0_DIN CAN Receive
CAN PHY
Input
CMOS –
3.3V
145 CAN_TX CAN0_DOUT CAN Transmit Output
CMOS –
3.3V
Notes:
1. In the Type/Dir column, Output is from Jetson Xavier NX. Input is to Jetson Xavier NX. Bidir is for Bidirectional signals.
2. The direction indicated for the CAN signals are associated with that usage. The pins support GPIO functionality, so support both
input and output operation (bidirectional).
Figure 12-6. CAN Connections
Jetson
SoC - CAN
AO_HV
CAN0_DOUT
CAN0 _DIN
CAN_TX
CAN_RX
145
CAN
PHY
143
Table 12-10. CAN Interface Signal Routing Requirements
Parameter
Requirement
Units
Notes
Max Data Rate / Frequency
5
Mbps / MHz
Configuration / Device Organization
1
load
Reference plane
GND
Trace Impedance
50
Ω
±15%
Via proximity (Signal via to GND return via)
< 3.8 (24)
mm (ps)
See Note 1
Trace spacing: Microstrip / Stripline
4x / 3x
dielectric
Max Trace Length (for RX & TX only)
223 (1360)
mm (ps)
See Note 2
Max Trace Length/Delay Skew from RX to TX
8 (50)
mm (ps)
See Note 2