TUSB8041: Asking for how to turn off the TUSB8041 auto OCP report function

SHH

Part Number: TUSB8041

Hi team,

followed the E2E thread's questions.

USB transmission function still can't recover after OCP issue end. Customer want turn off TUSB8041 automatically report overcurrent conditions function. Just keep HW protect. Customer tried turn off fullpwrmgmt function as below. (Pin 40 pull high with 4.7Kohm) However, it seems TUSB9041 still report overcurrent conditions for host controller.

Could you please comment how to turn of the auto report function? Need any other setting for turn off this function?

Thanks,
SHH

over 7 years ago

0 Malik Barton57 over 7 years ago

TI__Guru 64326 points

SHH,

Our device will always report over current events to be inline with the USB spec. In order for an application to be USB compliant it must report over current event for connected and unconnected ports. In order to not report over current events please NC the OVERCURXz pins.

0 SHH over 7 years ago in reply to Malik Barton57

TI__Mastermind 32196 points

Hi Mike,

So the datasheet need to modify? if customer change pin 40 from low to high, will the OC function be disable for customer requirement?

BR,

SHH

0 Malik Barton57 over 7 years ago in reply to SHH

TI__Guru 64326 points

SHH,

No, to meet customer requirements leave the OVERCURXz pins in NC. Pin 40 enables or disables the PWRCTLX pins to control the power switches not the OCP reporting.

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TUSB8041: Asking for how to turn off the TUSB8041 auto OCP report function