| 摘要 |
An interface circuit includes a detector to detect a particular pattern from a sequence of output data, a shift clock generator to change a cycle of a shift clock according to the detection result, a shift register section to change a data output width by the shift clock and output it as drive data, and an open-drain output section including an N-channel transistor driven by the drive data and a pull-up resistor. The detector detects a sequence where the current output data is "0" and the next output data is "1", and the shift clock generator shortens and extends the cycles of the shift clock corresponding to "0" and "1", respectively.
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