| 摘要 |
A data transmission method exchanges data between at least first and second electronic devices which are coupled via a plurality of bus lines, where each of the bus lines is terminated via a terminating resistor having one end coupled to a bus line and another end applied with a terminating voltage. The data transmission method includes the steps of (a) setting a high logic level of data to a voltage higher than the terminating voltage and setting a low logic level of the data to a voltage lower than the terminating voltage, and (b) continuously outputting the data from the first electronic device to at least one bus line at a timing determined by a first clock signal by alternately repeating a state where the data is output to the one bus line and a state where an impedance between the first electronic device and the one bus line is set to a high impedance.
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