Socionext Inc.

Natsumi Saito

Eiichi Nimoda

In an error response circuit an analysis circuit unit analyzes a command transmitted from a first circuit section to a second circuit section, and detects a status of data transfer between the first circuit section and the second circuit section. A response circuit unit generates an error signal in accordance with the detected status of the data transfer in response to the second circuit section changing from a first power consumption state to a second power consumption state in which power consumption is lower than power consumption in the first power consumption state. A switching circuit unit transmits the error signal to the first circuit section in place of a response signal that is responsive to the command and transmitted from the second circuit section to the first circuit section.

Error response circuit, semiconductor integrated circuit, and data transfer control method

A determining method includes obtaining terminal information indicating a first object terminal that is among terminals included among partial circuits and subject to determination of whether the first object terminal is an open terminal; obtaining for each terminal, connection information and first attribute information indicating an attribute of any one among an input terminal and an output terminal; generating, by a computer, for each terminal, second attribute information indicating an attribute opposite to the attribute indicated by the first attribute information; and determining, by the computer, whether a state of the first object terminal indicated by the terminal information becomes a high-impedance state, by simulating on the basis of the connection information and the second attribute information, a state of each terminal when a value of a terminal among the terminals and indicated as an output terminal by the second attribute information, is set at a first specified value.

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Kawasaki, Japan

Natsumi Saito