摘要:
An extra large number-of-input complex logic circuit, employed inside a microprocessor for performing a large number of controls and arithmetic operations, is constructed utilizing N(N.gtoreq.2) number of a unit logic circuit each comprising M(M.gtoreq.1) input CMOS logic circuits and one bipolar transistor, whereby respective outputs are integrated to produce one output in response to M.times.N number input signals to provide a high speed, high density integration and low power consumption microprocessor.
摘要:
A high speed, high performance pipelined semiconductor device is provided, such as a pipelined data processing device and memory device. In the pipeline operation, a functional circuit unit and a transmission unit are separately controlled at each pipeline stage cycle. A transmission unit between two functional circuit units is divided into N transmission units while considering a cycle time, and each divided transmission unit is assigned one pipeline stage cycle.
摘要:
A high speed, high performance pipelined semiconductor device is provided, such as a pipelined data processing device and memory device. In the pipeline operation, a functional circuit unit and a transmission unit are separately controlled at each pipeline stage cycle. A transmission unit between two functional circuit units is divided into N transmission units while considering a cycle time, and each divided transmission unit is assigned one pipeline stage cycle.
摘要:
There are provided a bipolar-MOS IC device smaller than half-micron scale, and a combination of such IC device and external circuits. The IC device has an internal voltage generating circuit for generating an internal power source by using an external power source, the voltage of the internal power source being lower than that of the external power source. The internal voltage generating circuit includes an NPN transistor formed in an N-type region or N-type island within a P-type semiconductor substrate of the IC device, and a PMOS transistor formed in the N-type island. The collector of the NPN transistor and the source of the PMOS transistor are used as external power source terminals. The drain of the PMOS transistor is connected to the base of the NPN transistor. The gate is used as a control signal terminal. The emitter of the NPN transistor is used as an internal power source output terminal. A current path from the external power source input terminal and the internal power source output terminal is accordingly formed within the N-type island isolated from the P-type substrate.
摘要:
A microprocessor according to the present invention comprises a sub-read bus, to which output terminals of registers of a register file of the microprocessor are coupled. The sub-read bus is in turn coupled to a main read bus of the microprocessor through a bus output circuit. Upon occurrence of a read access to any of the registers, the bus output circuit couples the sub-read bus with the main read bus, whereby data read out from the registers to the sub-read bus are transmitted to the main read bus, and under no existence of the read access, the bus output circuit interrupts the data transmission from the sub-read bus to the main read bus. With this, a load capacitance of the read bus is reduced. As a result, a time for making access to the read bus is much improved.
摘要:
An information processing system having an original clock oscillator for delivering at least one original clock signal K defined as a first clock signal and a plurality of information processing units supplied with the original clock signal K, wherein each information processing unit comprises clock generating means for generating at least one second clock signal K1 which is phase-locked with the original clock signal K and which has a predetermined duty cycle and a logic device whose operation timing is controlled by the second clock signal K1, And the operation timing of an interface provided between at least one pair oflogic devices is synchronously controlled by the clock signal K1.
摘要:
In semiconductor integrated circuit device and microprocessor including at least one functional circuit block, the start of operation of the functional circuit block is detected prior to the start of operation, the functional circuit block for which the start of operation has been detected is activated prior to the start of operation and inactivated after the termination of operation.
摘要:
In semiconductor integrated circuit device and microprocessor including at least one functional circuit block, the start of operation of the functional circuit block is detected prior to the start of operation, the functional circuit block for which the start of operation has been detected is activated prior to the start of operation and inactivated after the termination of operation.
摘要:
A data processing system having flexibility coping with parallelism of a program comprises a plurality of processor elements for executing instructions, a main memory shared by the plurality of processor elements, and a plurality of parallel operation control facilities for enabling the plurality of processor elements to operate in synchronism. The plurality of parallel operation control facilities are provided in correspondence to the plurality of processor elements, respectively. The data processing system further comprises a multiprocessor operation control facility for enabling the plurality of processor elements to operate independently, and a flag for holding a value indicating which of the parallel operation mode or the multiprocessor mode is to be activated. The shared cache memory is implemented in a blank instruction and controlled by a cache controller so that inconsistency of the data stored in the cache memory is eliminated.
摘要:
An information processing system having an original clock oscillator for delivering at least one original clock signal K defined as a first clock signal and a plurality of information processing units supplied with the original clock signal K, wherein each information processing unit comprises clock generating means for generating at least one second clock signal K.sub.1 which is phase-locked with the original clock signal K and which has a predetermined duty cycle and a logic device whose operation timing is controlled by the second clock signal K.sub.1, and the operation timing of an interface provided between at least one pair of logic devices is synchronously controlled by the clock signal K.sub.1.