• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 34 subscribers
  • Views 123 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TUSB2E11: Application Questions

McKenna Strambi
Intellectual 1820 points
Part Number: TUSB2E11


Tool/software:

Hi expert,

For disconnect interrupt (INT_USB_DISCONNECT_P1), is that only available for when the USB bus is in L2?  I am not able to see interrupt status when disconnect while in L0.

For attach interrupt (INT_USB_DET_ATTACH_P1), I am only able to observe the interrupt status on the 2nd connection.  My steps are as below.  Please let me know if I’m missing anything.
1. Put repeater in host mode

2. Enable INT_USB_DET_ATTACH_P1

3. Connect USB2 device.  INT_USB_DET_ATTACH_P1 is not observed.  The device was detected and enumerated by the host.

4. Disconnect USB2 device.  Reconnect USB2 device.  INT_USB_DET_ATTACH_P1 is observed

Thank you!

McKenna

  • 0
    TI__Mastermind 40870 points

    Hi McKenna,

    McKenna Strambi said:
    For disconnect interrupt (INT_USB_DISCONNECT_P1), is that only available for when the USB bus is in L2?  I am not able to see interrupt status when disconnect while in L0.

    Yes, correct. I believe this status should be only in L2.

    McKenna Strambi said:


    For attach interrupt (INT_USB_DET_ATTACH_P1), I am only able to observe the interrupt status on the 2nd connection.  My steps are as below.  Please let me know if I’m missing anything.
    1. Put repeater in host mode

    2. Enable INT_USB_DET_ATTACH_P1

    3. Connect USB2 device.  INT_USB_DET_ATTACH_P1 is not observed.  The device was detected and enumerated by the host.

    4. Disconnect USB2 device.  Reconnect USB2 device.  INT_USB_DET_ATTACH_P1 is observed

    I believe you're right on this one, this should be detected on the first attachment, not just starting at the second attachment.

    I can try to test this in the lab here, however, it may take some time for me to test this, as the equipment we need to test this is currently being used by another team.

    Thanks,

    Ryan