SDAA519 September   2026 DRA821U-Q1 , TDA4AEN-Q1 , TDA4AH-Q1 , TDA4AL-Q1 , TDA4AP-Q1 , TDA4APE-Q1 , TDA4VE-Q1 , TDA4VEN-Q1 , TDA4VH-Q1 , TDA4VL-Q1 , TDA4VP-Q1 , TDA4VPE-Q1

 

  1.   1
  2.    Abstract
  3.    Trademarks
  4. 1  Introduction
  5. 2  Acronyms and Definitions
  6. 3  USB 2.0 High Speed TX Compliance: Theory of Operation
    1. 3.1 USB 2.0 High Speed Signaling Overview
    2. 3.2 xHCI Port Test Control and Compliance Mode Entry
    3. 3.3 Eye Diagram Compliance
  7. 4  Register Reference
    1. 4.1 xHCI PORTSC — Port Status and Control Register
    2. 4.2 PORTPMSC Bit-Field Description (USB 2.0 — xHCI Spec)
    3. 4.3 Compliance Write Value Decode: 0x40000000
    4. 4.4 USB2 PHY TX Amplitude Register — USB2SS_PHY2_AFE_TX_REG1
  8. 5 Compliance Procedure: TDA4VEN / J722S / TDA4AEN
    1. 5.1 Hardware Requirements
    2. 5.2 Software Requirements
    3. 5.3 Hardware Setup
    4. 5.4 Physical Connections
    5. 5.5 Device Tree Source (DTS) Modification for USB0
    6. 5.6 Step 1: Verify EVM Boot and Console
    7. 5.7 Step 2: Write xHCI Registers to Enable HS Test Packet Mode
    8. 5.8 Step 3: Capture the HS Test Packet Waveform on the Oscilloscope
  9. 6 USB-IF Electrical Analysis Tool: Post-Processing Procedure
  10. 7  Adjusting the HS TX Amplitude
    1. 7.1 TX Amplitude Adjustment Procedure
  11. 8 Compliance Procedure: J7200/J784S4/J721S2/J742S2
  12. 9 Troubleshooting
  13. 10Summary
  14. 11References

5.4 Physical Connections

  • Plug the USB 2.0 Host Test Fixture Type-A plug connector into the USB Type-C™ port using a Type-C to Type-A adapter on the TDA4VEN EVM (USB0 port) or connect directly to the Type-A port if Type-C is not used
  • Connect a pair of matched SMA cables from the D+ tap of the test fixture to Channel 1 of the oscilloscope, and the D− tap to Channel 2
  • Connect the Main UART port of the EVM to the PC. Open TeraTerm and configure the serial port to 115200 baud. For TDA4VEN, use the third COM port of the four available.
  • Insert the prepared SD card with TI Processor SDK Linux image. Set the EVM DIP switches to SD card boot mode.
  • Verify the DIP switch is set to DFP mode for USB host operation.
    TDA4VEN EVM USB2.0 Host TX Test Setup Figure 5-1 TDA4VEN EVM USB2.0 Host TX Test Setup
    USB Mux and Type-C Path on J722SEVM Figure 5-2 USB Mux and Type-C Path on J722SEVM