• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 32 subscribers
  • Views 325 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.

TUSB1210 in host only mode

matianfu
Intellectual 500 points
Other Parts Discussed in Thread: TUSB1210

In our design (based on OMAP3630 and TUSB1210), the only usb device connected to TUSB1210 is an on-board wcdma modem module, which is separately powered.

Now I know the ID pin should be tied to ground, but I am not sure how I should deal with the VBUS and CPEN pin. Should I connect VBUS to some 5V or 3.3V power supply? or leave it floating? And could I leave CPEN floating?

Tianfu Ma 

  • 0
    Intellectual 840 points

    Hi matianfu,

    I'm new to the Ti forums and have been looking in to USB connectivity for a project and stumbled on your question.  I would have to assume page 54 ( PDF Page number, not the number on the page in http://www.ti.com/lit/ds/symlink/tusb1210.pdf would be appropriate.  It did sound like you want the wcdma modem module to be a device to attach to another device, making it the slave ( not host ) USB.  I would recommend an amendment to it for the 5V from the USB connector so the wcdma can ' detect ' it is connected.  You did not say what wcdma modem module you were using, so I am speculating that it could have a simple 5V transistor network used to switch on and off the power to it so it is off when there is no USB connection.

    Hope this is useful,

    Eric