Systems and methods for multi-level termination calibration for voltage mode drivers

A voltage mode driver calibration component comprising:

• a first reference cell having a first selected terminal resistance;
• a plurality of auxiliary reference cells having a second selected terminal resistance;
• and
• a combinational logic configured to compare a driver output with the first reference cell and the plurality of auxiliary reference cells to generate a calibration code, wherein the calibration code adjusts a turned on resistance for the first reference cell and the plurality of auxiliary reference cells to account for transistor variations.

A method of operating a voltage mode driver, the method comprising:

• providing first cells and auxiliary cells;
• configuring the first cells and the auxiliary cells to generate a driver output;
• measuring the driver output to identify for variations from expected results;
• generating calibration code according to the identified variations, a selected terminal resistance, a plurality of selected levels and the driver output;
• and
• calibrating at least the auxiliary cells according to the calibration code.