Other Parts Discussed in Thread: HD3SS3212, TUSB321
Dear Brian,
can you please review the UBS UFP schematic that i sent you via e-mail?
Best Regards,
David.
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I don't think I receive it, can you send again? or just send with private message on E2E.
my comment for UFP application:
1: You missing AC cap for HD3SS3212, normally on TX pin close to Type-C connector.
2: For TUSB321, prefer separate supply for VDD, like VSYS.
3: does Out1/Out2 connect to 1.8v IO?
Dear Brian,
1) we have the TX caps, C338, C339, C442, C443 or i'm wrong?
we have first the connector -> ESD Diode -> CMC -> TX capacitors-> mux HD3SS3212
2) what if the whole system is only supplied with VBUS will then the TUSB321 present it self as device so the the host supply the 5V on VBUS?
3) yes OUT1/OU2 are connected to 1.8V logic on processor.
Best Regards,
David.
sorry, I didn't see these AC caps.
For UFP , it's ok using Vbus as VDD supply, but for DFP, you have to separate Vbus and VDD since you need to control Vbus while VDD is on.