Retimer with slicer level adjustment

A retimer comprising:

• an input configured to receive a data stream;
• a reference voltage generator including an input and first, second, third, fourth, and fifth outputs;
• first, second, third, and fourth comparators that include respective first inputs, respective second inputs, and respective outputs, the first inputs of the first, second, third, and fourth comparators configured to receive samples of the data stream, the second inputs of the first, second, third, and fourth comparators coupled to respective ones of the first, second, third, and fourth outputs of the reference voltage generator;
• a hit sensor including a first input, a second input, and an output, the first and second inputs of the hit sensor respectively coupled to the outputs of the third and fourth comparators;
• a window results comparison circuit including an input and an output, the input of the window results comparison circuit coupled to the output of the hit sensor;
• and
• a window control circuit including a first input and a first output, the first input of the window control circuit coupled to the output of the window results comparison circuit, the first output of the window control circuit coupled to the input of the reference voltage generator.