Patent ID: 11876648
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A circuit comprising:
a first input configured to receive a first communication symbol of communication symbols;
a first adder having a first adder input coupled to the first input, second adder inputs, and first adder outputs;
first decision feedback equalizer (DFE) filter circuitry having first DFE filter inputs and first DFE filter outputs coupled to the second adder inputs, and responsive to the first DFE filter inputs, the first DFE filter outputs have one of three values, and the first DFE filter outputs correspond to a member of a set of possible combinations of the first DFE filter inputs;
first slicer circuitry having first slicer inputs coupled to the first adder outputs, and having first slicer outputs; and
a first multiplexer having first multiplexer inputs coupled to the first slicer outputs, a first multiplexer output, and the first multiplexer configured to connect one of the first multiplexer inputs to the first multiplexer output;
a second input configured to receive a second communication symbol of the communication symbols from a current clock cycle;
a second adder having a third adder input coupled to the second input, a fourth adder input, and a second adder output;
second DFE filter circuitry having second DFE filter inputs and having second DFE filter outputs, and responsive to the second DFE filter inputs, the second DFE filter outputs correspond to a member of a set of possible combinations of the second DFE filter inputs;
a second multiplexer having second multiplexer inputs coupled to the second DFE filter outputs, a second multiplexer output coupled to the fourth adder input, and having a control input coupled to the first multiplexer output, the second multiplexer configured to connect one of the second multiplexer inputs to the second multiplexer output; and
a second slicer having a second slicer input coupled to the second adder output, and having a second slicer output.