Can; Figure 12-6. Can Connections; Table 12-9. Can Pin Descriptions; Table 12-10. Can Interface Signal Routing Requirements - Nvidia Jetson Xavier NX Design Manual

12.4

CAN

Jetson Xavier NX brings a single controlled area network (CAN) interface to the main
connector.

Table 12-9. CAN Pin Descriptions

Module Pin
Pin # Xavier Signal
Name
143 CAN_RX CAN0_DIN
145 CAN_TX CAN0_DOUT
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
CAN0_DOUT
AO_HV
CAN0_DIN

Table 12-10. CAN Interface Signal Routing Requirements

Parameter
Max Data Rate / Frequency
Configuration / Device Organization
Reference plane
Trace Impedance
Via proximity (Signal via to GND return via)
Trace spacing: Microstrip / Stripline
Max Trace Length (for RX & TX only)
Max Trace Length/Delay Skew from RX to TX
NVIDIA Jetson Xavier NX
Usage/Description
CAN Receive
CAN Transmit
CAN_TX
145
CAN_RX
143
Requirement
5
1
GND
50
< 3.8 (24)
4x / 3x
223 (1360)
8 (50)
Miscellaneous Interfaces
Recommended
Usage
CAN PHY
CAN
PHY
Units Notes
Mbps / MHz
load
Ω ±15%
mm (ps) See Note 1
dielectric
mm (ps) See Note 2
mm (ps) See Note 2
DG-09693-001_v1.7 | 74
Directio
Pin Type
n
CMOS –
Input
3.3V
CMOS –
Output
3.3V