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TUSB8041: Askign fro the TUSB8041 USB3.0 HW setting

Part Number: TUSB8041
Other Parts Discussed in Thread: TUSB522P, TUSB211

Hi Team

My customer would like to use the TUSB8041 on the robot application. And they have questions on how to set the charger and current limit function on pin 40/41/42/45.

The conditions from customer

1. The downstream USB port does not support charger

2. The downstream USB port does not support current limit function.

3. Ony for USB3.0 data function. 

4. PWRCTL1/BATEN1~ PWRCTL4/BATEN4 are floating now.

5. OVERCUR1Z~ OVERCUR4Z pull high to 3.3V now

Questions:

1. Can customer use the SMBUS to control the TUSB8041 driving capbility? Or need to use the USB redriver?

2. Could you please suggest the pin 40/41/42/45 setting based on customer request?


Can custome use the SMBUS to control the TUSB8041 driving capbility? Or need to use the USB redriver?


Thanks,
SHH

  • 1. Can customer use the SMBUS to control the TUSB8041 driving capbility? Or need to use the USB redriver?
    We dont recommend changing SMBUS to change driver. Superspeed driver does not require the change in majority of cases.. If you need to increase HS driver. There is a drive setting resistor R1 that you can adjust down to 8.1K to increase HS eye.

    If you do need to driver extra channel TUSB522P for USB 3.1 and TUSB211 for USB 2.0 redrivers are recommended.

    2. Could you please suggest the pin 40/41/42/45 setting based on customer request?

    Recommendation below

    40 - Pull up Place holder Do not install
    41 - Pull down place holder do not install
    42 - Pull Up place holder do not install
    45 - Pull down place holder do not install