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US 2015/0317279 A1Published application
Semiconductor device and mobile terminal device
AssigneeRenesas Electronics Corporation
InventorSatoshi Sasaki
Life of this patent
Estimating the term…
Abstract
To provide a semiconductor device and a mobile terminal device capable of operating with stability. A semiconductor device includes an HSIC physical layer circuit fixedly connected to another semiconductor device through a bus line, a USB link control unit that operates with either a USB host function or a USB device function, and link-connects to the another semiconductor device, a nonvolatile storage unit that stores selection data, the selection data being used to select the USB function with which the USB link control unit operates, and a semiconductor substrate on which the HSCI physical control unit, the USB link control unit, and the nonvolatile storage unit are formed.
Claims11
1-20. (canceled)
A semiconductor device comprising:
- an HSIC physical layer circuit fixedly connected to another semiconductor device through a bus line;
- a USB link control unit that operates witty a USB function of either a host function or a device function, and link-connects to the another semiconductor device through the HSIC physical layer circuit;
- a nonvolatile storage unit that stores selection data, the selection data being used to select the USB function with which the USB link control unit operates;
- and
- a semiconductor substrate on which the HSIC physical layer circuit, the USB link control unit, and the nonvolatile storage unit are formed,
- wherein the USB link control unit comprises
- a host setting unit that generates a setting signal used for an operation as the host function;
- a device setting unit that generates a setting signal used for an operation as the device function;
- and
- a select unit that outputs the setting signal generated by the host setting unit or the setting signal generated by the device setting unit according to the selection data,
- wherein the bus line includes a STROBE signal line and a DATA signal line,
- wherein the HSIC physical layer circuit controls an initial state of the STROBE signal line and the DATA signal line according to the setting signal output from the USB link control unit,
- wherein, when the HSIC physical layer circuit operates as the host function according to the setting signal, the HSIC physical layer circuit brings the STROBE signal line and the DATA signal line into an IDLE state when the semiconductor device is started up, and
- wherein, when the HSIC physical layer circuit operates as the device function according to the setting signal, the HSIC physical layer circuit brings the STROBE signal line and the DATA signal line into a CONNECT state after the STROBE signal line and the DATA signal line are brought into the IDLE state.
11 more elements
A mobile terminal device comprising:
- an application processor that executes an application process;
- and
- a base-band processor that executes a base-band process, the base-band processor being fixedly connected to the application processor through a bus line, wherein
- each of the application processor and the base-band processor comprises:
- an HSIC physical layer circuit fixedly connected to the bus line;
- a USB link control unit that operates with a USB function of either a host function or a device function, and link-connects to the application processor or the base-band processor through the HSIC physical layer circuit;
- a nonvolatile storage unit that stores selection data, the selection data being used to select the USB function with which the USB link control unit operates;
- and
- a semiconductor substrate on which the HSIC physical layer circuit, the USB link control unit, and the nonvolatile storage unit are formed,
- wherein the USB link control unit comprises
- a host setting unit that generates a setting signal used for an operation as the host function;
- a device setting unit that generates a setting signal used for an operation as the device function;
- and
- a select unit that outputs the setting signal generated by the host setting unit or the setting signal generated by the device setting unit according to the selection data,
- wherein the bus line includes a STROBE signal line and a DATA signal line,
- wherein the HSIC physical layer circuit controls an initial state of the STROBE signal line and the DATA signal line according to the setting signal output from the USB link control unit,
- wherein, when the HSIC physical layer circuit operates as the host function according to the setting signal, the HSIC physical layer circuit brings the STROBE signal line and the DATA signal line into an IDLE state when the semiconductor device is started up, and
- wherein, when the HSIC physical layer circuit operates as the device function according to the setting signal, the HSIC physical layer circuit brings the STROBE signal line and the DATA signal line into a CONNECT state after the STROBE signal line and the DATA signal line are brought into the IDLE state.
15 more elements
Dependencies are inferred from the claim text.