TUSB4041I schematic

daniel

Hi team,

My application is only basic HUB. Is below schematic OK?

There are no power switch, and we want to use hardware method (no I2C & SMBus) to achieve the basic HUB function. Is it OK?

Because this HUB is quite complicated, please kindly help. Thanks

over 9 years ago

0 Elias Villegas M. over 9 years ago

TI__Guru* 76130 points

Hello,
FULLPWRMGMT# should be tied high, everything else looks correct.
Are you going to have permanently attached devices on the downstream ports?
Regards

0 daniel over 9 years ago in reply to Elias Villegas M.

Genius 5095 points

Dear Elias,

Thanks for your support.
What is the difference between permanently or removable attached devices on the downstream ports?

0 Elias Villegas M. over 9 years ago in reply to daniel

TI__Guru* 76130 points

When you have a removable device (a device that is going to be actively deattached/re-attached) you need to sense any over-current condition and make sure it is disabled when it happens (this is required by the USB spec).
A non-removable device won't be susceptible to a over current event.

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TUSB4041I schematic