[WP76xx][HW] Switch USB host or USB function

WP76xx_switch_USBHost_function.xlsx (39.9 KB)

Back Ground:
We would like to switch the function that WP76xx was operated as USB host or USB function.
In order to support it, we make the attached block diagram.

  • How to switch: control GPIO22 and GPIO23, and supply to power SW IC to supply Micro USB IF
  • How to recognize function: Check the logic via USB_ID or GPIO25

Please check the attached file as “WP76xx_switch_USBHost_function.xlsx”.
Can this block diagram support to switch either USB Host or USB Function?

Best Regards,

for hardware topic, please directly contact Sierra FAE.

Are we talking about USB OTG?

Hi, Jordan

Are we talking about USB OTG?

No, I talked the following behavior that;

  • USB Host: WP76xx supply voltage to external USB device
  • USB function: No supply voltage, only receiving data via USB

OK, I see. Then it needs a help from the HW team.

Hi Hiroki,
Please make SFDC ticket for this.