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本帖最後由 heavy91 於 2010-7-1 02:11 PM 編輯
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Relation of jitter type material~~# s0 ~- G* ^5 E `
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Jitter can be defined as the deviations in a clock’s output transition
* s8 r1 I; u1 H. efrom their ideal positions. The deviation can either be leading or
4 @$ `0 A |+ P, n$ {, G% Vlagging the ideal position. Jitter is usually specified in ± pico seconds.- v" }& f5 i7 S
Jitter measurements can be classified into three categories:) t1 E) f3 X ~1 G$ y
cycle-to-cycle jitter, period jitter, and long-term jitter. All jitter measurements2 d4 R' K9 ^# Y4 }/ t
are at a specified voltage, usually Vcc/2 or 1.5V.
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