| 摘要 |
PURPOSE:To prevent malfunction of a route flip-flop even when an error occurs due to accidental factor by repeating continuously a special fixed pattern in signals that control duplication switching. CONSTITUTION:CCU0 and CCU2 are duplicated circuit control devices and CIU is an interface device of many circuits. Circuit control devices CCU0, CCU1 contain all circuits and the interface device CIU contains a specified number of circuits. S route flip-flop that selects circuit control device CCU0 or CCU1 is provided in each circuit interface CIU. The route for one of control device is established by decoding special signals of fixed pattern sent continuously from circuit control device CCU0, CCU1, and setting or resetting the route flip-flop. |
