Device with equaler circuit

An integrated circuit, comprising:

• a continuous time linear equalizer (CTLE) circuit configured to receive and shift an input signal by a positive voltage, a zero voltage, and a negative voltage, and configured to generate output signals corresponding to the positive voltage, the zero voltage, and the negative voltage;
• and
• a decision feedback equalizer (DFE) circuit comprising a first DFE unit and a second DFE unit that are coupled to the CTLE circuit,
• wherein the first DFE unit is configured to equalize the output signals and configured to generate odd data signals, and configured to transmit the odd data signals to the second DFE unit for generating even data signals, and
• the second DFE unit is configured to equalize the output signals and configured to generate the even data signals, and configured to transmit the even data signals to the first DFE unit for generating the odd data signals.

A method, comprising:

• equalizing, by a continuous time linear equalizer (CTLE) circuit, an input signal which is shifted with offset voltages that are different from each other, to generate output signals corresponding to the offset voltages;
• equalizing the output signals by a decision feedback equalizer (DFE) circuit, to generate odd data signals based on even data signals;
• and
• equalizing the output signals by the DFE circuit, to generate the even data signals based on the odd data signals.