CLOCK SWITCHING CONTROL SYSTEM IN CLOCK SYNCHRONIZING TYPE SYSTEM

摘要: PURPOSE:To prevent a malfunction by supplying new basic clock and an updated (n)-fold in the same phase relation as logical function between stopped from being supplied switching synchronizing type system. CONSTITUTION:The presence absence of abnormality is detected selection instructing circuit 12 concerning clocks plural distributing sources, having no selected selecting 11. That instruction signal generated what pair used processor 1 are held rise detecting 14 timing determining 13. In which newly based on this get into relation, outputted output circuit. Consequently, at time clocks, matching kept made non-selected newly.