Signal encoding is a way of combining both clock and data
information into a stream of signals over a medium.
The rules of Manchester encoding define a 0 as a signal that is high for the first half of the period and low for the second half. It defines a 1 as a signal that is low for the first half of the period and high for the second half.
The rules
define a 1 as a signal that is low for the first half of the period and high for the
second half.
10BASE-T transceivers are designed to send and receive
signals over a segment that consists of 4 wires - 1 pair of wires for transmitting data,
and 1 pair of wires for receiving data.
Note: Manchester encoding results in 0 being encoded as a high-to-low transition and 1 being encoded as a low-to-high transition. Because both
0's and 1's result in a transition to the signal, the clock can be effectively recovered at the receiver.
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