Comment by vscode-rest
11 hours ago
Interesting. Does UsBC spec/licensing require any sort of notation for products that don’t implement handshake?
11 hours ago
Interesting. Does UsBC spec/licensing require any sort of notation for products that don’t implement handshake?
There is no handshake, all that's needed are two 5.1 kΩ pulldown resistors. By omitting them the manufacturer saved all of about 0.1c and made their device incompatible with compliant usb-c chargers.
More info: https://hackaday.com/2023/02/07/all-about-usb-c-manufacturer...
Such products shouldn’t exist by spec, they’re just not compliant.