Nvidia Jetson Orin NX User Manual

USB and PCIe
PRELIMINARY INFORMATION
NVIDIA Jetson Orin NX DG-10931-001_v0.1 | 33
Parameter Requirement Units Notes
Gen 4.0: -9.5 dB @ 8GHz
Gen 3.0: -8.2 dB @4GHz
Max PCB via delay from the
Device/Connector
41.9
ps
Max distance from Device ball or
Connector pin to first PCB via.
PCB within pair (intra-pair) skew
0.15 (1)
mm (ps)
Do trace length (delay) matching before
hitting discontinuities.
Within pair (intra-pair) matching between
subsequent discontinuities
0.15 (1)
mm (ps)
Differential pair uncoupled delay
41.9
ps
Via
Via placement
Place GND vias as symmetrically as possible to data pair vias. GND via distance
should be placed less than 1x the diff pair via pitch
Max # of Vias
4
Use micro via or back drilled via - no via
stub allowed.
Max Via stub length
N/A
Not Allowed
AC Cap
Value Min/Max
0.22
uF
20%, 0402 X5R or better. Only required
for TX pair when routed to connector.
Place close to TX side.
Voiding
Voiding the plane directly under the pad
~0.1mm larger than the pad size is
required.
(See Figure 7-14)
Serpentine (See USB 3.2 Guidelines)
Serpentine
Min bend angle
135
deg (a)
S1 must be taken care in order to
consider Xtalk to adjacent pair. (
Dimension
Min A Spacing
Min B, C Length
Min Jog Width
4x
1.5x
3x
Trace width
Miscellaneous
GND fill rule
Remove unwanted GND fill that is either floating or act like antenna
Connector
Voiding
Void all layers of golden finger area
under the pad ~0.15mm larger than the
pad size is recommended.
(See Figure 7-15)
Keep critical PCIe traces such as PEX_TX/RX, etc. away from other signal traces or unrelated power traces and areas or power supply
components
Note:
1. This does not consider the loss of the end device or any additional connectors. These need to be accounted for and will reduce
the loss budget which will affect the max length or delay possible.
2. The max length and delay numbers are examples. These should be updated based on the actual PCB material loss and the loss
for the end device and any additional connections.
Figure 7-11. Zig-Zag Routing Example

Nvidia Jetson Orin NX Specifications

General

Brand	Nvidia
Model	Jetson Orin NX
Category	Computer Hardware
Language	English