Pcie; Table 6-7. Miscellaneous Usb Signal Connections; Table 6-8. Usb 3.2 Signal Connections - Nvidia Jetson Xavier NX Design Manual

Table 6-7. Miscellaneous USB Signal Connections
Module Pin Name
GPIO00
(USB_VBUS_EN0)
GPIO (VBUS Detect)
Table 6-8. USB 3.2 Signal Connections
Module Pin Name
USBSS_TX_N/P (USB 3.2 Port #2)
USBSS_RX_N/P (USB 3.2 Port #2)
6.2

PCIe

Jetson Xavier NX brings two PCIe interfaces to the module pins for up to 5 total lanes (1 x4 + 1
x1) for use on the carrier board. The PCIe x4 interface operates up to Gen4 speed and supports
both Root Port and Endpoint operation. The PCIe x1 interface operates only up to Gen3 speed
and supports only Root Port operation. Figure 6-9 shows both the x1 and x4 interfaces as Root
Ports. Figure 6-10 shows the x4 interfaces as an Endpoint. Lane reversal and polarity inversion
(P/N swapping) is supported.
NVIDIA Jetson Xavier NX
Type Termination
I/O
I 5V to 1.8V level shifter
Type
DIFF Out
DIFF In
Description
USB0 VBUS Enable: Connect to
enable and overcurrent pins of load
switch (through 100ohm series
resistor to OC pin).
VBUS Detect: Connect to VBUS pin of
USB connector receiving USB0_+/–
interface through level shifter.
Termination
Series 0.1uF caps. ESD
Protection near connector if
required.
If routed directly to a
peripheral on the board, AC
caps are needed for the
peripheral TX lines. ESD
protection near connector if
required.
USB and PCIe
Description
USB 3.2 Differential
Transmit Data Pairs:
Connect to USB 3.2
connectors, hubs or other
devices on the PCB.
USB 3.2 Differential Receive
Data Pairs: Connect to USB
3.2 connectors, hubs or
other devices on the PCB.
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