So I am working on a project for which I am using a USB Type C Receptacle for the main hardware interface.
I am familiar with the previous USB types and how their pins are laid out, however, upon looking up the pinout for USB Type C, I cannot figure out which pin corresponds to traditional, pins for USB Type A. Does D+ / D- correspond to the traditional Rx / Tx, or does it have to do with the Rx+/- and Tx +/-? Furthermore, which pin corresponds to the ID pin in microUSB B.
Any clarification is appreciated.
Best Answer
It's the D+ and D- like normal. There is two of each because USB C is supposed reversible. You can insert the plug both ways and it will still be a valid USB 2 connection, as usb 2.0 does not negotiate the pinning. Flip the plug 180 degrees and the same pins will connect in the same order. Your board should connect both together for maximum connectivity.
There is no ID pin, as that's only implemented on plugs. In USB C, the CC pins handle this, and pulling them to ground with a 5K resistor will initiate OTG HOST mode on the other side of the link.