Patent ID: 11880678
Assignee: REALTEK SEMICONDUCTOR CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A chip, comprising:
a processing circuit;
a power pin;
a ground pin;
a plurality of input/output (I/O) pins including a control pin;
a readable/writable memory including a plurality of ports;
a switching circuit configured to electrically couple the ports to the I/O pins when activated; and
a control circuit configured to selectively activate or not activate the switching circuit according to the control pin, wherein when the switching circuit is not activated, the ports are electrically coupled to the processing circuit or the control circuit through the switching circuit, wherein the plurality of I/O pins further include a plurality of mapping pins, and when the switching circuit is activated, the ports are electrically coupled to the mapping pins respectively through the switching circuit.