| 摘要 |
PROBLEM TO BE SOLVED: To connect both of a device for parallel connection and a device for serial connection through a common parallel connector. SOLUTION: A host side is provided with a parallel ATA host controller 100 and a serial ATA host controller 105. The controller 100 is connected to the pertinent signal line of a 40 pin connector based on ATA. On the other hand, in order to assign a pair of differential signals to be used for reception and transmission, the controller 105 assigns, for transmission, the set of DMARQ and IORDY in a parallel interface among signals for reception in the parallel controller 100, and assigns INTRQ and IOCS 16 for reception. Those two controllers are controlled by a signal supplied to a serial ATA interface selecting circuit 106. COPYRIGHT: (C)2004,JPO
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