A comparator per channel with configurable polarity provides a binary signal.
For the transmission is still not suitable binary signal.
The device has clocking regions that control the flow of binary signals through the device.
Most computer buses use binary digital signals, which are sequences of pulses of fixed amplitude.
NRZ-L code lacks sufficient timing information when the binary signal remains at one level in of either 1 or 0.
It creates an error signal, which is based on the difference between the binary signal coming in and the pulse train going out.
Basically, this means that minute adjustments are made to the analog signal to compensate for the differences between the binary signal and the pulse train.
Even a binary signal which can only take on the values 1 or -1 will be white if the sequence is statistically uncorrelated.
Personal computers are digital, processing information as binary signals that are either on or off.
I didn't make any sort of intuitive leap to look at a binary signal in the call.