A pin state configuration circuit, comprising: a configured resistor load, a voltage sampling unit, and a comparator, wherein the configured resistor load is configured to connect to a first configuration pin and a second configuration pin of a chip; the voltage sampling unit is configured to supply a second reference voltage to the configured resistor load by using the first configuration pin or the second configuration pin, and respectively sample a voltage of the first configuration pin and a voltage of the second configuration pin; and the comparator is configured to calculate a first voltage ratio based on the voltage of the first configuration pin and the voltage of the second configuration pin that are sampled by the voltage sampling unit when the second reference voltage is supplied to the configured resistor load by using the first configuration pin, calculate a second voltage ratio based on the voltage of the first configuration pin and the voltage of the second configuration pin that are sampled by the voltage sampling unit when the second reference voltage is supplied to the configured resistor load by using the second configuration pin, and determine a corresponding pin configuration state based on the first voltage ratio and the second voltage ratio, wherein the configured resistor load comprises: a configurable first resistor, a configurable second resistor, and a configurable third resistor; and a first terminal of the first resistor is configured to connect to a first reference voltage, and a second terminal of the first resistor is configured to connect to the first configuration pin; a first terminal of the second resistor is configured to connect to the first reference voltage, and a second terminal of the second resistor is configured to connect to the second configuration pin; and the third resistor is connected between the second terminal of the first resistor and the second terminal of the second resistor. the configured resistor load is configured to connect to a first configuration pin and a second configuration pin of a chip; the voltage sampling unit is configured to supply a second reference voltage to the configured resistor load by using the first configuration pin or the second configuration pin, and respectively sample a voltage of the first configuration pin and a voltage of the second configuration pin; and the comparator is configured to calculate a first voltage ratio based on the voltage of the first configuration pin and the voltage of the second configuration pin that are sampled by the voltage sampling unit when the second reference voltage is supplied to the configured resistor load by using the first configuration pin, calculate a second voltage ratio based on the voltage of the first configuration pin and the voltage of the second configuration pin that are sampled by the voltage sampling unit when the second reference voltage is supplied to the configured resistor load by using the second configuration pin, and determine a corresponding pin configuration state based on the first voltage ratio and the second voltage ratio, wherein the configured resistor load comprises: a configurable first resistor, a configurable second resistor, and a configurable third resistor; and a first terminal of the first resistor is configured to connect to a first reference voltage, and a second terminal of the first resistor is configured to connect to the first configuration pin; a first terminal of the second resistor is configured to connect to the first reference voltage, and a second terminal of the second resistor is configured to connect to the second configuration pin; and the third resistor is connected between the second terminal of the first resistor and the second terminal of the second resistor.