multiple TUSB4041I chained cascade usb hub

Nicolas Schmidt

Other Parts Discussed in Thread: TUSB4041I

I am currently designing a usb hub with multiples ports (10) with the TUSB4041I (3)

What is the best way to connect them together? I don't use the same reset line, but I have the same value for the reset capacitor (1u). I don't use the overcurrent pin neither the powerctrl pin. I just cascade them by the DM DP pins. Is this a problem?

Thank you in advance,

over 8 years ago

0 Elias Villegas M. over 8 years ago

TI__Guru* 76130 points

Hello,
That is correct, you just need to cascade them using DP/DM, I would suggest to put a bigger capacitor on GRSTz on the second tier hubs just to give a little more time at power-up.
You can share your schematic here for review.
regards

0 Nicolas Schmidt over 8 years ago in reply to Elias Villegas M.

Prodigy 70 points

Thank you for your feedback!

I'm using one TUSB4041I for two usb ports (5 and 6) and to split the hub for 2 other TUSB4041I (usb ports 1,2,3,4 and 7,8,9,10).

Interface

Interface forum

multiple TUSB4041I chained cascade usb hub