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本帖最後由 heavy91 於 2010-7-1 02:11 PM 編輯
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0 @, I0 C, _3 x; S6 ]Relation of jitter type material~~& ?' g5 }6 ?. o4 h8 ^% w; r
: k s, o8 ^/ x5 G7 ZJitter can be defined as the deviations in a clock’s output transition1 I8 S/ b% @4 W
from their ideal positions. The deviation can either be leading or
+ B y3 ^# J7 ilagging the ideal position. Jitter is usually specified in ± pico seconds.
( Q6 i" ]1 }( D5 [- QJitter measurements can be classified into three categories:
. J( i$ D/ n& z- c3 {cycle-to-cycle jitter, period jitter, and long-term jitter. All jitter measurements! N% p5 S* l4 A. e# _* X, V C1 n& j
are at a specified voltage, usually Vcc/2 or 1.5V.
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