Method with function parameter setting and integrated circuit using the same

An integrated circuit with function parameter setting, coupled to an external setting unit, the integrated circuit comprising:

• a function pin, coupled to the external setting unit;
• a switch unit, coupled to the function pin;
• a first function adjustment circuit, coupled to the switch unit, and receiving a reference value, wherein the first function adjustment circuit comprises a first current source and a second current source respectively coupled to the switch unit, the first function adjustment circuit uses the first current source to detect a first voltage detecting value at the function pin, and compares the first voltage detecting value with a default value to generate a comparison result, and controls the switch unit to switch the first current source and the second current source according to the comparison result, and sets a first function parameter;
• and
• a second function adjustment circuit, coupled to the switch unit, and detecting a percentage of a divided voltage at the function pin, so as to provide the reference value and set a second function parameter.

A method with function parameter setting, adapted to an integrated circuit, wherein the integrated circuit has a function pin, and the function pin is coupled to an external setting unit and a switch unit, the method with function parameter setting comprising:

• providing a function adjustment circuit, wherein the function adjustment circuit comprises a first current source and a second current source respectively coupled to the switch unit;
• making the first current source to flow into or flow out of the external setting unit through the function pin;
• using the function adjustment circuit to detect a first voltage detecting value at the function pin;
• generating a comparison result according to the first voltage detecting value and a default value;
• and
• controlling the switch unit to switch the first current source and the second current source according to the comparison result.

A method with function parameter setting, adapted to an integrated circuit, wherein the integrated circuit has a function pin, and the function pin is coupled to an external setting unit and a switch unit, the method with function parameter setting comprising:

• providing a first function adjustment circuit and a second function adjustment circuit respectively coupled to the switch unit, wherein the first function adjustment circuit comprises a first current source and a second current source;
• using the second function adjustment circuit to detect a percentage of a divided voltage at the function pin, so as to provide a reference value to the first function adjustment circuit and set a second function parameter;
• making the first current source to flow into or flow out of the external setting unit through the function pin;
• using the first function adjustment circuit to detect a first voltage detecting value of the external setting unit;
• generating a comparison result according to the first voltage detecting value and a default value;
• and
• controlling the switch unit to switch the first current source and the second current source according to the comparison result, and setting the first function parameter.