Integrated circuit device and circuitry

An integrated circuit (IC) device, comprising:

• a comparator having an input coupled to a practical voltage;
• a subtractor circuit having an input coupled to an output of the comparator and another input coupled to a reference voltage;
• a voltage divider configured to receive a voltage from the subtractor circuit;
• and
• an adder circuit having an input coupled to an output of the voltage divider, and another input coupled to a default weight,
• wherein another input of the comparator is coupled from a default voltage to a learned voltage in response to presence of a difference between the reference voltage and a voltage at an output of the subtractor circuit.

A circuitry, comprising:

• a driver configured to drive a signal;
• and
• a machine-learning circuit including:
• a comparator having an input, wherein the input is coupled to a learned voltage in response to a discrepancy between an immature classification and a reference classification,
• wherein the machine-learning circuit is configured to adjust a slew rate of the signal based on the learned voltage,
• wherein the comparator is configured to generate an information on the immature classification by comparing a default voltage to a practical voltage, and
• wherein the machine-learning circuit further includes:
• an adder circuit configured to provide an updated weight by adding a variation reflecting the discrepancy to a default weight.