Other Parts Discussed in Thread: TUSB320, TPS25910
Hello,
I'm designing a board using USB-C connectors for data input and output. So, the USB-C is taking a DRP role as both DFP and UFP for data but it won't be using any of the USB PD features to sink or source current.
I was recommended to use a switch for a VBUS, TPS259533, even if I don't use the USB ports to charge or discharge currents.
I attached my schematics with TUSB320LAI and TPS259533 below.
Problem with my current design is that when I take the DRP - DFP role, the ID pin of TUSB320LAI goes low -> TPS259533 is enabled and 5V_USB1 is on -> MCU USB pin enabled
But when the USB-C port is set to DRP-UFP, the ID pin of TUSB320LAI goes high -> TPS259533 is disabled and 5V_USB1 is off -> MCU USB pin not enabled.
I have looked through the TUSB320 datasheet, but I wasn't able to find a I2C address where I can change the attached state. But I think this is a workaround for my problem.
Is there any guide designing USB-C port that doesn't sink or source current for DRP role using TUSB320LAI? or is UFP device's VBUS usually not connected to a host?
Best regards
Brian
