Nvidia JETSON NANO Product Design Guide

USB and PCI Express
NVIDIA Jetson Nano DG-09502-001_v2.1 | 27
Figure 6-10. Gigabit Ethernet Magnetics and RJ45 Connections
(J8) T XD3-
(J7) T XD3+
(J6) T XD1-
(J5) T XD2-
(J4) T XD2+
(J3) T XD1+
(J2) T XD0-
(J1) T XD0+
22nF
each
75Ω
each
J1
J2
J3
J6
J4
J5
J7
J8
M D0 +
M D0 -
M D1 +
M D1 -
M D2 +
M D2 -
M D3 +
M D3 -
M CT
GRN+ GRN– YE L+ YE L–
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
11 0Ω
11 0Ω
GBE_LE D_LINK
GBE_LED_ACT
1000pF
VDD_3V 3_ SYS
100pF
0. 05Ω
0. 05Ω
0. 05Ω
0. 05Ω
0. 05Ω
0. 05Ω
Pla ce 0.05Ω resistors &
capacitor around
chassis GND shape
PO E_ VC 1
PO E_ VC 2
PO E_ VC 3
PO E_ VC 4
Table 6-12. Ethernet MDI Interface Signal Routing Requirements
Parameter Requirement Units Notes
Reference plane GND
Trace impedance Diff pair / Single Ended 100 / 50 Ω ±15%. Differential impedance target is 100Ω.
90Ω can be used if 100Ω is not achievable
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)
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.
Table 6-13. 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 110Ω series resistor Gigabit Ethernet Link LED: Connect to green LED on RJ45
connector
GBE_LED_ACT O 110Ω series resistor Gigabit Ethernet Activity LED: Connect to yellow LED on
RJ45 connector

Nvidia JETSON NANO Specifications

General

Brand	Nvidia
Model	JETSON NANO
Category	Microcontrollers
Language	English