Mitsubishi Electric Corporation

Yusuke Shimai

Yoshihiro Ogawa

Yoshiaki Katayama

Osamu Toyama

Tsutomu Motohama

Tomoyuki Nagatsuka

The present invention is provided with an embedded system () capable of performing control without any malfunction is provided, by including processing circuitry configured to: start a reading process; assign a read identification (ID) for each reading process, and to update a read ID number indicating the number of assigned read IDs; read communication data; and acquire, upon finishing a read process, a data writing-in-progress flag indicating whether a writing process is being performed, and a writing time identification (ID) number indicating the read ID number at the time of a data writing process, and to judge the consistency of the read data read, based on the data writing-in-progress flag, the read IDs, and a writing time read ID number.

Embedded system, embedded system control method and data consistency judgment method

An LSI includes an address decoder in which combinations of IP cores and control registers simultaneously accessed according to an operation mode signal are set in advance, so that the plurality of control registers can be accessed with a single system address signal. Therefore, it is unnecessary that the CPU is provided with selection signals whose number is equal to that of the combinations of the control registers. This reduces coding work for operating CPU, reducing work in developing a program of the CPU.

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Tokyo, Japan

Yusuke Shimai