A semiconductor device capable of communicating with a host apparatus includes a symbol generation unit, a coding unit, and a transmission unit. The symbol generation unit includes a random number generation circuit and generates a symbol according to a random number generated by the random number generation circuit. The coding unit performs 8b/10b coding for the symbol. The transmission unit transmits the symbol coded by the 8b/10b coding unit to the host apparatus.

An active USB device and a method for switching an operating mode thereof are provided. In the method, a USB devices is connected to a first host device, and the USB device is in a compound device multi-port mode; the USB device is disconnected from the first host device and the USB devices keeps in the On state; upon detection disconnection of the USB device to the first host device, the USB device switches from the compound device multi-port mode to the single compact disc mode. According to the method for switching the operating mode of the USB device in the disclosure, the USB device can install driver without distinction and completely in various complicated application environments, thereby increasing user experience.

A dual connection peripheral device has a housing. A captive input/output cable is disposed at least partially within the housing and selectively connects the dual connection peripheral device to a host device. An auxiliary input/output port is disposed on the housing and selectively connects to the host. A control circuit is operatively coupled to the captive input/output cable and auxiliary input/output port and selectively connects one of the captive input/output cable and the auxiliary input/output port to the host device.

A semiconductor device capable of communicating with a host apparatus includes a symbol generation unit, a coding unit, and a transmission unit. The symbol generation unit includes a random number generation circuit and generates a symbol according to a random number generated by the random number generation circuit. The coding unit performs 8b/10b coding for the symbol. The transmission unit transmits the symbol coded by the 8b/10b coding unit to the host apparatus.

A semiconductor device capable of communicating with a host apparatus includes a symbol generation unit, a coding unit, and a transmission unit. The symbol generation unit includes a random number generation circuit and generates a symbol according to a random number generated by the random number generation circuit. The coding unit performs 8b/10b coding for the symbol. The transmission unit transmits the symbol coded by the 8b/10b coding unit to the host apparatus.

Apparatus and methods for USB hosts and USB devices to dynamically switch roles such that a product which initially operates as a USB host may instead operate as a USB device and vice versa. Products such as smartphones and tablets which initially operate as USB devices may dynamically switch roles to become USB hosts. Similarly, products such as PCs and in-vehicle infotainment systems which initially operate as USB hosts may dynamically switch roles to become USB devices. Dynamic USB role switching is permitted in a variety of topologies including those in which a direct connection exists between a host and a device as well as those in which a USB hub is present. In addition, such dynamic role switching may be performed in topologies which incorporate widely used USB Type A connectors and cables, thus avoiding the need for a special connector or cable.

Various embodiments comprise apparatuses and methods including a method of reconfiguring partitions in a memory device as directed by a host. The method includes managing commands through a first interface controller to mapped portions of a first memory not having an attribute enhanced set, and mapping portions of a second memory having the attribute enhanced set through a second interface controller. Additional apparatuses and methods are described.

A semiconductor device capable of communicating with a host apparatus includes a symbol generation unit, a coding unit, and a transmission unit. The symbol generation unit includes a random number generation circuit and generates a symbol according to a random number generated by the random number generation circuit. The coding unit performs 8b/10b coding for the symbol. The transmission unit transmits the symbol coded by the 8b/10b coding unit to the host apparatus.

A semiconductor device capable of communicating with a host apparatus includes a symbol generation unit, a coding unit, and a transmission unit. The symbol generation unit includes a random number generation circuit and generates a symbol according to a random number generated by the random number generation circuit. The coding unit performs 8b/10b coding for the symbol. The transmission unit transmits the symbol coded by the 8b/10b coding unit to the host apparatus.

An information processing apparatus includes: a host system; a rectifying element configured to output a signal input to one end to the other end; and a socket configured to connect a peripheral device. The host system is connected to the other end, the socket includes a first signal terminal to which a first signal is input from the peripheral device and a second signal terminal to which a second signal is input from the peripheral device in a case where the socket is connected to the peripheral device, and the first signal terminal is connected to the one end, the first signal has a first voltage higher than a reference potential, the second signal has a second voltage higher than the reference potential in a case where the first voltage is equal to or lower than an operation voltage of the host system.