D 2013-02-24T13:28:03.313
L PicoPhy.1
P 0f4ec7f36e82c5e8e48773d67c34060900d8195d
U unaiur
W 394
<h1>PicoNet.1 Physical Layer</h1>
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:
<dl>
 <dt>One
  <dd>15ms down followed by 45ms up
 <dt>Zero
  <dd>45ms down followed by 15ms up
 <dt>Break
  <dd>90ms down followed by 30ms up
</dl>

Z 9048eb8e02db4bd1e04c1529ef174e2c