An IC includes a bare die and a multiplexed pin. The multiplexed pin is electrically connected to first and second switch circuits, the first and second switch circuits are respectively connected to first and second circuit modules disposed on the bare die and control a connection between the first and second circuit modules and the multiplexed pin, the first switch circuit is connected to a first die pad by a metal layer trace within the bare die, the second switch circuit is connected to a second die pad by a metal layer trace within the bare die, and the first and second die pads are connected to the multiplexed pin through a bond wire respectively. The bare die with a larger number of die pads can be packaged into an IC package with a smaller number of chip pins.

An electrical transmitter (100) is provided that comprises an ethernet connection (118) and a power source. Electronics (112) are configured to receive the ethernet connection (118) and the power source. The electronics (112) comprise logic operable to detect the power source and accept power from either the ethernet connection (118) or a dedicated power connection (116). A remappable power connection terminal (114) with the electronics (112) is operable to accept power when the dedicated power connection (116) is detected, and operable to accept a non-power connection when power from the ethernet connection (118) is detected.

An electrical transmitter (100) is provided that comprises an ethernet connection (118) and a power source. Electronics (112) are configured to receive the ethernet connection (118) and the power source. The electronics (112) comprise logic operable to detect the power source and accept power from either the ethernet connection (118) or a dedicated power connection (116). A remappable power connection terminal (114) with the electronics (112) is operable to accept power when the dedicated power connection (116) is detected, and operable to accept a non-power connection when power from the ethernet connection (118) is detected.

Techniques for low-power USB Type-C receivers with high noise rejection are described herein. In an example embodiment, a USB-enabled device comprises a receiver circuit coupled to a Configuration Channel (CC) line of a USB Type-C subsystem. The receiver circuit is configured to reject the incoming signal even when the incoming signal includes noise with a magnitude of more than 300 mVpp, and to operate in the presence of a VBUS charging current that is compliant with a USB-PD specification.

Techniques for low-power USB Type-C receivers with high noise rejection are described herein. In an example embodiment, a USB-enabled device comprises a receiver circuit coupled to a Configuration Channel (CC) line of a USB Type-C subsystem. The receiver circuit is configured to reject the incoming signal even when the incoming signal includes noise with a magnitude of more than 300 mVpp, and to operate in the presence of a VBUS charging current that is compliant with a USB-PD specification.

In described examples, an integrated circuit comprising a first pin and a second pin. A switchable resistive element is coupled between the first pin and the second pin and has a pull down resistance state or a high resistance state. A comparator has a first comparator input coupled with the first pin, a reference signal input, and a comparator output. A logic circuit has an input coupled with the comparator output, an internal power good signal input, and a control signal output. The control signal output is coupled with the switchable resistive element to select the pull down resistance state or the high resistance state.

A keyboard control system and a computer input system thereof are disclosed. The keyboard control system is used in a keyboard of the computer input system, wherein the keyboard has a plurality of keys. The keyboard control system includes a plurality of key control modules and a main control module. Each key control module is electrically connected to a plurality of keys so as to generate a key control signal according to the actuation of any one of the keys, wherein each key control module is electrically connected to different keys. The main control module is electrically connected to a plurality of key control modules for executing the key control signal.

In an embodiment, an integrated circuit includes a communication interface configured to be coupled to a communication bus and an input circuit. The communication interface has a plurality of terminals. The input circuit has a first input coupled to a first terminal of the plurality of terminals, and a second input coupled to a second terminal of the plurality of terminals. The first input of the input circuit is configured to receive a first signal and the second input of the input circuit is configured to receive a second signal. The input circuit is configured to generate a reset signal at an output of the input circuit based on the first and second signals while the communication interface is unselected.

In described examples, an integrated circuit comprising a first pin and a second pin. A switchable resistive element is coupled between the first pin and the second pin and has a pull down resistance state or a high resistance state. A comparator has a first comparator input coupled with the first pin, a reference signal input, and a comparator output. A logic circuit has an input coupled with the comparator output, an internal power good signal input, and a control signal output. The control signal output is coupled with the switchable resistive element to select the pull down resistance state or the high resistance state.

A power delivery control module includes a first interface, a second interface and a controller. The first interface is configured to be coupled with a first external device. The second interface is configured to be coupled with a second external device. The second interface is a USB Type-C interface, and the first interface is not a USB Type-C interface. The controller is coupled with the first interface and the second interface. Wherein when the first interface is coupled with the first external device and the second interface is coupled with the second external device, the power delivery control module selectively transfers power from the first external device to the second external device or from the second external device to the first external device.