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CCS/TUSB8041: Overcurrent event behavior

Oba
Genius 17325 points
Part Number: TUSB8041

Tool/software: Code Composer Studio

Hello,

 

I want to realize the following configuration in TUSB8041

 

When one of 4 downstream ports has overcurrent event, I want to disable only the overcurrent port and all other ports continue to work.

If the overcurrent condition is removed, the port is automatically enabled again.

 

To realize it, just configuring the below 3 pins and no requirement of external EEPROM. Correct?

 

GANGED/SMBA2/HS_UP = Low

FULLPWRMGMTz / SMBA1 / SS_UP = Low

PWRCTL_POL = Depend on the power switch

 

Regards,

Oba

  • 0
    TI__Guru 60870 points
    Hi Oba,

    The overcurrent reporting you described does not require any sort of EEPROM to implement. You have indicated the correct pin configuration settings as well. Please be aware that the hub will report an overcurrent condition to the USB host controller and the USB host controller may send a USB command to the hub that will turn off power on all the ports or the affected port using the PWRCTLx pins.

    Regards,
    JMMN