Nvidia Jetson Orin NX Series User Manual

Gigabit Ethernet
PRELIMINARY INFORMATION
Jetson Orin NX Series and Jetson Orin Nano Series DG-10931-001_v1.1 | 44
Figure 8-2. Gigabit Ethernet Magnetics and RJ45 Connections
(J8) TXD3-
(J7) TXD3+
(J6) TXD1-
(J5) TXD2-
(J4) TXD2+
(J3) TXD1+
(J2) TXD0-
(J1) TXD0+
22nF
each

each
J1
J2
J3
J6
J4
J5
J7
J8
MD0+
MD0-
MD1+
MD1-
MD2+
MD2-
MD3+
MD3-
MCT
GRN+
GRN
YEL+
YEL
VC1
VC2
VC3
VC4
0.1uF
GBE_MDI0_P
GBE_MDI0_N
GBE_MDI1_P
GBE_MDI1_N
GBE_MDI2_P
GBE_MDI2_N
GBE_MDI3_P
GBE_MDI3_N
110
110
GBE_LED_LINK
GBE_LED_ACT
1000pF
VDD_3V3_SYS
100pF
0.05
0.05
0.05
0.05
0.05
0.05
Place resistors &
capacitor around
chassis GND shape
POE_VC1
POE_VC2
POE_VC3
POE_VC4
8.1.1 Ethernet MDI Routing Guidelines
The following tables describes the ethernet signal routing requirements and connections.
Table 8-2. Ethernet MDI Interface Signal Routing Requirements
Parameter
Requirement
Units
Notes
Reference plane
GND
Trace impedance (Diff pair / Single
Ended)
100 / 50
Min trace spacing (pair-pair)
0.763
mm
Max trace length/delay
109 (690)
mm (ps)
Max within pair (intra-pair) skew
0.15 (1)
mm (ps)
Max pair to pair (inter-pair skew)
0.22 (1.5)
mm (ps)
Number of vias
minimum
Ideally there should be no vias, but if required
for breakout to Ethernet controller or
magnetics, keep very close to either device.
Notes: NVIDIA Orin does not support delay or skewing of clock vs. data. This must be enabled in the PHY.
Table 8-3. Ethernet Signal Connections
Module Pin Name
Type
Termination
Description
GBE_MDI[3:0]_N/P
DIFF
I/O
Gigabit Ethernet MDI IF Pairs: Connect to Magnetics -/+ pins
GBE_LED_LINK
O
resistor
Gigabit Ethernet Link LED: Connect to green LED cathode on RJ45
connector. Anode connected to VDD_3V3_SYS
GBE_LED_ACT
O
resistor
Gigabit Ethernet Activity LED: Connect to yellow LED cathode on
RJ45 connector. Anode connected to VDD_3V3_SYS

Nvidia Jetson Orin NX Series Specifications

General

Brand	Nvidia
Model	Jetson Orin NX Series
Category	Control Unit
Language	English