Patent ID: 9647857
Date: 2017-05-09
CPC Classifications: H04B,H04L

Claim:
1. A semiconductor device comprising: a semiconductor chip; a transmitter on the semiconductor chip, the transmitter to convey a serial, differential signal over a channel to a receiver; the transmitter further having circuitry to receive a sequence of input bits and to responsively generate the serial, differential signal to have signal levels, at least three signal levels in the serial, differential signal corresponding to each given bit of the input bits in the sequence, each signal level of the at least three signal levels being respectively attenuated in dependence on whether an adjacent bit in the input sequence has a same state as the given bit in the sequence, relative to when the given bit does not have the same state as the adjacent bit; and circuitry to cause the transmitter to transmit at least one training sequence to the receiver; wherein said semiconductor device is to receive programming responsive to transmission of the at least one training sequence to the receiver, to establish a degree of respective attenuation of the at least three signal levels.