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本帖最後由 heavy91 於 2010-7-1 02:11 PM 編輯 . ^, g9 N/ m+ R. d) i
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Relation of jitter type material~~
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% f- `% L! Q9 m, ]7 q$ bJitter can be defined as the deviations in a clock’s output transition
9 J1 E# i! Y6 ?! e0 Mfrom their ideal positions. The deviation can either be leading or! _ x1 C7 u5 }4 E$ K
lagging the ideal position. Jitter is usually specified in ± pico seconds.
( G( G. N& w" n, K$ EJitter measurements can be classified into three categories:+ c1 e' {1 D7 c3 @
cycle-to-cycle jitter, period jitter, and long-term jitter. All jitter measurements/ ^) W, b% r T( W+ e
are at a specified voltage, usually Vcc/2 or 1.5V.
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