Interpolation circuit, reception circuit and method of generating interpolated data

A reception circuit comprising:

• an interpolation circuit configured to output interpolated data based on input data input in time sequence;
• and
• a calculation circuit configured to detect a phase difference between the input data and the interpolated data, wherein
• the interpolation circuit includes
• a generation circuit configured to generate the interpolated data,
• a first analog digital converter configured to convert the interpolated data at a data point into digital data, and
• a second analog digital converter configured to convert the interpolated data at a change point into digital data, a number of quantization bits of the second analog digital converter is smaller than a number of quantization bits of the first analog digital converter.

A method of generating interpolated data, the method comprising:

• generating interpolated data based on a plurality of pieces of input data in time sequence;
• converting first interpolated data at a data point of the interpolated data into first digital data;
• and
• converting second interpolated data at a change point into second digital data of the interpolated data, a second number of quantization bits of the second analog digital converter being smaller than a first number of quantization bits of the first analog digital converter.