Nvidia Jetson AGX Orin Series User Manual (English)

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USB 2.0 Tuning Guide

PRELIMINARY INFORMATION

Jetson AGX Orin Series Tuning and Compliance Guide DA-11040-001_v0.7 | 2

Table 1. Host Mode Test Registers

Description Register Name and Setting

Normal Operations T_XUSB_XHCI_OP_PORTPMSCHS_x[31:28] = 0000b

Test J T_XUSB_XHCI_OP_PORTPMSCHS_x[31:28] = 0001b

Test K T_XUSB_XHCI_OP_PORTPMSCHS_x[31:28] = 0010b

Test SE0 NAK T_XUSB_XHCI_OP_PORTPMSCHS_x[31:28] = 0011b

Test Packet T_XUSB_XHCI_OP_PORTPMSCHS_x[31:28] = 0100b

Force Enable T_XUSB_XHCI_OP_PORTPMSCHS_x[31:28] = 0101b

The xUSB USB 2.0 port register addresses are as follows:

 Port 0: 0x03610464: T_XUSB_XHCI_OP_PORTPMSCHS_4

 Port 1: 0x03610474: T_XUSB_XHCI_OP_PORTPMSCHS_5

 Port 2: 0x03610484: T_XUSB_XHCI_OP_PORTPMSCHS_6

 Port 3: 0x03610494: T_XUSB_XHCI_OP_PORTPMSCHS_7

Note: NVIDIA uses the equipment listed for this guide. Contact the vendor for compliance

Oscilloscope and software.

Test Mode Programming Sequence

The programming sequence for enabling USB 2.0 test mode is as follows:

1. Connect any USB device (see Note) to the port. This will prevent the controller from

entering power down mode.

Note: The phrase “any USB device” refers to any real device, such as HS uDISK or LS mouse.

2. Disable the auto suspend for the controllers. For example, the following command under

Linux Kernel.

Note: These operations require root privileges.

echo on > /sys/bus/usb/devices/usb1/power/control

Set Port Power (PP) to Disabled state by setting T_XUSB_XHCI_OP_PORTSC[9] = 0

Port 0: 0x03610460: T_XUSB_XHCI_OP_PORTSC_4

Port 1: 0x03610470: T_XUSB_XHCI_OP_PORTSC_5

Port 2: 0x03610480: T_XUSB_XHCI_OP_PORTSC_6

Port 3: 0x03610490: T_XUSB_XHCI_OP_PORTSC_7

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Nvidia Jetson AGX Orin Series Specifications

General

Memory	32GB 256-bit LPDDR5
Storage	64GB eMMC 5.1
Networking	10/100/1000BASE-T Ethernet
Dimensions	100 mm x 87 mm
GPU	NVIDIA Ampere architecture with 64 Tensor Cores
CPU	12-core Arm Cortex-A78AE v8.2 64-bit CPU
AI Performance	275 TOPS
Power	15W to 60W
Video Encode	2x 4Kp60 \| 8x 1080p60 \| 16x 1080p30 (H.265/H.264)
USB	2x USB 2.0
PCIe	PCIe Gen 4
Operating System Support	Ubuntu