| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and a device that connect three or more devices to an IDE (integrated device electronics) controller via a bus. SOLUTION: The method connects and operates three or more devices to and on an IDE bus under the conditions that not more than two IDE devices may be active at any given time on the same IDE bus and that cable/trace lengths for the IDE bus may not exceed the limits set forth in the IDE bus standard. The IDE devices are configured for cable select connected to the IDE bus, wherein not more than two of the IDE devices are powered on at any given time. Those IDE devices which are powered on at a given time have an appropriate logic level asserted on a CSEL line, so that only one IDE device powered on at any given time is a 'master', and only one IDE device powered on is a 'slave'. COPYRIGHT: (C)2004,JPO
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