Mitsubishi Electric Corporation

Hisafumi Komoto

Shuya Sano

Tomohisa Yamaguchi

An FA network LSI is provided in a communication device performing a communication process in a network layer or higher through a plurality of protocols. The FA network LSI includes a data-link layer processing unit that performs a process in a data link layer for control data, and a protocol processing unit that performs a process in the network layer or higher for the control data. The data-link layer processing unit includes a first data-link layer processing unit to process dedicatedly to correspond to a protocol required high speed processing, a second data-link layer processing unit to process in a standard data link layer, for a protocol other than the protocol required the high speed processing, and a data-link-layer-processing selection unit to select one of the two units mentioned-above. The data-link layer processing unit is formed by hardware.

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Tokyo, Japan

Hisafumi Komoto