Control chip for communicating with wired connection interface by using one configurable pin selectively serving as input pin or output pin

A control chip, comprising:

• a configurable pin, arranged for coupling a first pin and a second pin of a wired connection interface;
• and
• a control logic, arranged for controlling the configurable pin to switch between a first operation mode and a second operation mode;
• wherein the configurable pin serves as an input pin configured for receiving an input signal when operating in the first operation mode, and the configurable pin serves as an output pin configured for outputting a control signal for controlling hot plug detection (HPD) when operating in the second operation mode.

A control chip, comprising:

• a configurable pin, arranged for coupling a first pin and a second pin of a high-definition multimedia interface (HDMI) connector;
• and
• a control logic, arranged for controlling the configurable pin to switch between a first operation mode and a second operation mode;
• wherein the configurable pin serves as an input pin when operating in the first operation mode, and the configurable pin serves as an output pin when operating in the second operation mode.