Fujitsu Corporation

Fujitsu Microelectronics Limited

Hidenari Nagata

Tatsushi Otsuka

Masanori Ishizuka

Hideo Ohwada

By including plural receiving branches which are independently controllable for use in diversity reception or plural-channel simultaneous reception, a receiving device can be operated both as a diversity receiving device and as a plural-channel simultaneous receiving device.

Receiving device

A semiconductor device includes an external pin, a control parameter decision circuit, and a register update circuit. The control parameter decision circuit includes a register and an output selector. The register is initialized in accordance with resetting of the semiconductor device. The output selector, according to a level value of an external input signal supplied via the external pin, selects one of a signal whose level value is set equal to a register value of the register and a signal whose level value is set opposite to the register value of the register, and outputs the selected signal as a control parameter signal. The register update circuit updates the register value of the register when a level value of the control parameter signal need be changed.

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Kawasaki, Japan

Hidenari Nagata