PRELIMINARY INFORMATION
Jetson AGX Orin Series Tuning and Compliance Guide DA-11040-001_v0.7 | 1
USB 2.0 Tuning Guide
This chapter describes the steps and lists the registers needed to tune the USB 2.0 high-speed
eye diagram for the Jetson AGX Orin
™
series modules. The USB Implementers Forum (USB IF)
provides complete test specifications and instructions on their website for high-speed host
and device mode testing.
Note: All occurrences of Orin module refer to Jetson AGX Orin series modules.
NVIDIA typically uses Tektronix oscilloscopes for USB characterizations. The test procedures
for Tektronix oscilloscopes are available from the USB-IF website.
Customers may use oscilloscopes from other vendors to perform USB characterization.
Required Equipment
The following equipment is required:
Tektronix TDS694C or faster digital sampling oscilloscope.
Tektronix P6247 or P6248 or equivalent differential probe.
High-speed USB Electrical Test Fixture.
Oscilloscope USB test software.
Software tool to access register and memory space on the Jetson AGX Orin module or to
build a special image to force the enable of the USB test mode.
Host Mode Testing Registers
Table 1 lists the USB 2.0 registers that must be toggles in order to force Test J, Test K, Test
SE0 NAK, and Test Packet on the respective USB ports.
Host Mode Testing Registers
Table 1 lists the USB 2.0 registers that must be toggled to force Test J, Test K, Test SE0 NAK,
and Test Packet on the respective USB ports.
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