Nvidia Jetson AGX Xavier Series User Manual

USB, PCIe, and UFS
Jetson AGX Xavier Series Product DG-09840-001_v2.5 | 43
7.1.1 USB 2.0 Design Guidelines
These requirements apply to the USB 2.0 controller PHY interfaces: USB[3:0]
Table 7-7. USB 2.0 Interface Signal Routing Requirements
Parameter Requirement Units Notes
Max Frequency (High Speed): Bit Rate/UI
period/Freq.
480/2.083/240 Mbps/ns/MHz
Max Loading: High Speed / Full Speed / Low Speed 10 / 150 / 600 pF
Reference plane GND
Trace Impedance: Diff pair / Single Ended 90 / 50 Ω ±15%
Max Trace Delay
With CMC or SW (Microstrip / Stripline)
Without CMC or SW (Microstrip / Stripline)
900/1050 (6)
1350/1575 (9)
ps (in)
Prop delay assumption: 6.9ps/mm. for
stripline, 5.9ps/mm. for microstrip). See
Note 3
Max Intra-Pair Skew between USBx_P and USBx_N 7.5 ps
Notes:
1. If portion of route is over a flex cable this length should be included in the Max Trace Delay/Length calculation
and 85Ω Differential pair trace impedance is recommended.
2. Up to 4 signal Vias can share a single GND return Via.
3. CMC = Common-Mode-Choke. SW = Analog Switch
4. Adjustments to the USB drive strength, slew rate, termination value settings should not be necessary, but if
any are made, they MUST be done as an offset to default values instead of overwriting those values.
7.1.2 USB 3.1 Design Guidelines
The following requirements apply to the USB 3.1 PHY interfaces.
Table 7-8. USB 3.1 Interface Signal Routing Requirements
Parameter Requirement Units Notes
Specification
Data Rate / UI period
GEN1
GEN2
5.0 / 200
10.0 / 100
Gbps / ps
Device mode supports GEN1 speed only.
Max Number of Loads 1 load
Termination 90 differential Ω On-die termination at TX and RX
Insertion Loss (IL)
Host
GEN1 (Type C)
GEN1 (Type A)
GEN2 (Single role host mode)
Device
GEN1 (Type C)
GEN1 (Micro AB)
GEN2 Host/GEN1 Device (dual role
mode)
Resonance Dip Frequency
≥ -2
≥ -7
TBD
≥ -2
≥ -1
≥ -5.4
> 8
dB
dB
dB
dB
dB
dB
GHz
@ 2.5GHz
@ 2.5GHz
@ 5GHz
@ 2.5GHz
@ 2.5GHz
@ 5GHz (Host) / 2.5GHz (Device)
The resonance dip could be caused by a via
stub for layer transition or trace stub for co-
layout.

Nvidia Jetson AGX Xavier Series Specifications

General

Brand	Nvidia
Model	Jetson AGX Xavier Series
Category	Computer Hardware
Language	English