Nuvoton Technology Corporation

Shih-Hsuan Hsu

Chia-Ching Lu

Ming-Che Hung

Ping-Ying Chu

Chun-Yi Wu

Shih-Hsuan Yen

Ping-Cheng Tsai

A serial bidirectional communication method is provided. The method includes: performing a downlink transmission and performing an uplink transmission. The downlink transmission includes: receiving first downlink data through a first transmission terminal, wherein the first downlink data comprises at least one control command, and the at least one control command is cascaded and configured to control at least one electronic device; removing one, corresponding to a local device, of the at least one control command from the first downlink data to form second downlink data, wherein the local device is one of the at least one electronic device; and when there is a control command remaining in the second downlink, outputting the second downlink data through a second transmission terminal. The uplink transmission includes outputting first uplink data through the first transmission terminal. The first uplink data includes local information generated by the local device.

Serial bidirectional communication circuit and method thereof

A fan detection method, a fan detection chip and a fan detection system using the same are disclosed. The fan detection method is applied to a fan detection chip including a first pin, a second pin, a third pin, a fourth pin, and the fan is electrically coupled to the first pin, the second pin and the third pin at least. The fan detection method includes following steps: controlling a switch to selectively conduct the first pin and the second pin; controlling a pulse width modulation (PWM) signal processing module to output a voltage pulse to the fourth pin; detecting, by the voltage detection module, a voltage level on the fourth pin; and determining the fan to be a PWM fan when the voltage level is changed, and determining the fan to be a DC fan when the voltage level is not changed.

Fan detection method, fan detection chip and fan detection system using the same

A power management circuit is provided. The power management circuit includes a power switch, a current/voltage detector, a current setting unit, and a control unit. The power switch is coupled to a power supply of the computer system. When the power switch is turned on, it supplies an output current and an output voltage of the power supply to an external device. The current/voltage detector detects the magnitudes of the output current and the output voltage. The current setting unit sets a plurality of current thresholds. When the computer system is in a power-saving state and when the output current is greater than a first current threshold and smaller than a second current threshold or the output voltage is smaller than a first voltage threshold and larger than a second voltage threshold, the control unit issues a notification signal to execute a predetermined operation on the power supply.

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Taoyuan, Taiwan

Shih-Hsuan Hsu