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本帖最後由 heavy91 於 2010-7-1 02:11 PM 編輯 ( K: @( M' p' K" a: {! M
3 R1 N( R8 U" f5 dRelation of jitter type material~~
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( ?' `3 @2 N A* J7 `% p2 c8 sJitter can be defined as the deviations in a clock’s output transition
$ l; L: E1 p, \) J- ?, N& v7 f' o! Ffrom their ideal positions. The deviation can either be leading or; U; e& Y6 e8 V* v3 ~1 V0 F% z
lagging the ideal position. Jitter is usually specified in ± pico seconds.
+ o# ~7 t: N4 Q; ]Jitter measurements can be classified into three categories:
7 t h- `7 u' icycle-to-cycle jitter, period jitter, and long-term jitter. All jitter measurements
7 V4 _" Z8 k$ m) _: @- dare at a specified voltage, usually Vcc/2 or 1.5V.
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