Re:All About USB-C: Illegal Adapters
by fragmede on Tuesday December 27, 2022 @03:03PM
(#34153093)
That device, the speaker in this case, is missing the pull-down (Rd) resistors on CC1 and CC2 to say that it's happy to get 5v@500ma when connected using a USB-C to USB-C cable. Those resistors aren't needed for signaling when using a USB-C to USB-A cable, which is why that works.
https://community.silabs.com/s/article/what-s-the-role-of-cc...