Suzanna - USB-C debug cable adaptor =================================== This is a "Suzy-Q" USB-C Debug Accessory adaptor board. Designed by John Tsiombikas There are multiple possible configurations supported for testing, don't populate all footprints when building this. Possible configurations: 1. As described at https://www.chromium.org/chromium-os/ccd which seems to agree with the USB-C standard Debug Accessory Mode: populate R2 and R4 with 22k and 56k resistors (0805 package). 2. https://wiki.postmarketos.org/wiki/Serial_debugging#Suzy-Q_debug_cable shows inconsistent pin numbers and signal names. Assuming the signal names are correct: populate R1 and R3 footprints with 5.1k resistors (0805 package). 3. Same as '2' but assume signal names in that diagram are incorrect and pin numbers are correct: populate R3 and R5 with 5.1k resistors (0805 package). This seems more likely than '2', as it seems to also agree with the USB-C standard for the Debug Accessory Mode. The LED D1 is optional, if populated the reistor R6 is also needed (any value between 330ohm and 1k, 0805 package). Soldering the USB-C connector is going to be a bitch...