摘要:
A semiconductor integrated circuit includes a bridge circuit which controls a data transfer of a bus line, peripheral circuits which are connected to the bridge circuit through the busline, and a control circuit which is formed at the peripheral circuits. The control circuit receives a select signal and controls the data transfer in the peripheral circuits in accordance with a logic state of the select signal.
摘要:
A semiconductor integrated circuit includes a bridge circuit which controls a data transfer of a bus line, peripheral circuits which are connected to the bridge circuit through the busline, and a control circuit which is formed at the peripheral circuits. The control circuit receives a select signal and controls the data transfer in the peripheral circuits in accordance with a logic state of the select signal.
摘要:
An optical switch of the present invention comprises an optical fiber arranging member in which tip ends of a plurality of first optical fibers are juxtaposed, a movable arm facing the optical fiber arranging member and fixing a tip end of a second optical fiber, and a drive mechanism For driving at least one of the optical fiber arranging member and the movable arm, for switching of optical connection, in an arrangement direction of the first optical fibers and in a direction perpendicular to the arrangement direction of the first optical fibers to optically couple the second optical fiber with the first optical fiber, wherein the optical fiber arranging member and the movable arm are encased in a sealing case and wherein an antireflection agent is filled in the sealing case.
摘要:
A microcomputer or microcontroller with a watchdog timer-counter also has an external reset signal generator. When the central processing unit of the microcomputer or microcontroller fails to execute its control program correctly, the watchdog timer-counter generates an internal reset signal for a first interval, resetting the central processing unit, and the external reset signal generator generates an external reset signal for a second interval, different from the first interval. The length of the second interval can be set to match the requirements of external peripheral devices to which the external reset signal is supplied.
摘要:
The present invention provides an LSI which comprises first circuit areas (e.g., an I/O area and a VBAT area) in which power is always held ON, a second circuit area (e.g., a CORE area) capable of ON/OFF-switching of the power, a power control circuit which is provided within the corresponding first circuit area and outputs a control signal for performing power control on the second circuit area, and a reset signal detection circuit which is provided within the corresponding first circuit area and detects an internal standby reset signal or an external standby reset signal to control the operation of the power control circuit.
摘要:
A circuit which generates a dot clock synchronized to an external video signal which can ensure a pulse width allowed by a device which is supplied with the dot clock. A high frequency clock is divided to generate a first dot clock, and the phase is initialized in accordance with information on a previously set frequency division ratio upon detection of a significant edge of a horizontal synchronization signal. Also, a second dot clock, the logical level of which changes every minimum allowable period, is formed from the high frequency clock in accordance with information on a previously set minimum allowable period, and the phase is modified upon detection of the significant edge such that the minimum allowable period is ensured for the logical level period even before and after the detection. The second dot clock is selected upon detection of the significant edge, and afterwards, the first dot clock is selected when a confirmation can be made that the timing of the first dot clock is coincident with or behind the timing of the second dot clock.
摘要:
A semiconductor integrated circuit includes a bridge circuit which controls a data transfer of a bus line, peripheral circuits which are connected to the bridge circuit through the busline, and a control circuit which is formed at the peripheral circuits. The control circuit receives a select signal and controls the data transfer in the peripheral circuits in accordance with a logic state of the select signal.
摘要:
A microcomputer or microcontroller with a watchdog timer-counter also has an external reset signal generator. When the central processing unit of the microcomputer or microcontroller fails to execute its control program correctly, the watchdog timer-counter generates an internal reset signal for a first interval, resetting the central processing unit, and the external reset signal generator generates an external reset signal for a second interval, different from the first interval. The length of the second interval can be set to match the requirements of external peripheral devices to which the external reset signal is supplied.
摘要:
A semiconductor integrated circuit includes a bridge circuit which controls a data transfer of a bus line, peripheral circuits which are connected to the bridge circuit through the bus line, and a control circuit which is formed at the peripheral circuits. The control circuit receives a select signal and controls the data transfer in the peripheral circuits in accordance with a logic state of the select signal.
摘要:
A semiconductor integrated circuit includes a bridge circuit which controls a data transfer of a bus line, peripheral circuits which are connected to the bridge circuit through the busline, and a control circuit which is formed at the peripheral circuits. The control circuit receives a select signal and controls the data transfer in the peripheral circuits in accordance with a logic state of the select signal.