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Controller when the USB device is attached

Mehmet COBAN
Intellectual 275 points
Other Parts Discussed in Thread: TUSB319-Q1

Hello,

Is there any device which can provide to determine whether an USB device (can be USB Flash, Type A, Type C) is attached or not for Automotive Industry? I think it can be done with monitoring DM,DP, CC1 and CC2 lines.

Regards,

Mehmet.

  • 0
    TI__Mastermind 35925 points

    Mehmet, 

    Do you want to detect  if a USB device is connected or not or the type of device?

     Every USB device has a pullup resistor on one of the Data lines (one for low-speed devices, the other for all others). A USB host recognizes the presence of this resistor and initiates enumeration when it appears. When a device is connected, one of the data lines is pulled up and the controller uses this to notice that the device has been connected.

    Best Regards

    Siddharth

  • 0 in reply to Siddharth Deshpande
    Intellectual 275 points

    Siddharth,

    Thank you for your response. 

    Yes, I want to detect if a USB device is connected or not the type of the device. Actually, I want to detect whatever device connected and sent the information to the another connector to report a device is connected. 

    tusb319 device monitors the CC lines and detects the device when is attacthed. However I relaized that may be the device request only bc.1.2 or may be costumer wants to connect a USB Flash device. For all these reasons, Tusb319-q1 is not fully compliant for my design. 

    In conclusion, I want to detect whatever device connected and sent the information to the another connector to report a device is connected. Do you know any IC to help me?

    Note: IC must have Automotive Qualified Certification.

    Regards,

    Mehmet

  • 0 in reply to Mehmet COBAN
    TI__Mastermind 35925 points

    Mehmet, 

    You can take a look at USB automotive products that TI offers at the following link

    https://www.ti.com/interface/usb/products.html#p1498=Automotive

    Best Regards

    Siddharth