PicoNet.1 Physical Layer

The physical layer is one bidirectional open-drain line pulled up to 12-36V using a 1KOhm resistor.

Four symbols can be transmitted varying the time the bus is asserted down using an output mosfet:

One

15ms down followed by 45ms up

Zero

45ms down followed by 15ms up

Break

90ms down followed by 30ms up