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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~~: B# I% G5 u7 k3 W/ Y) [
1 K) H3 t5 a8 B D7 CJitter can be defined as the deviations in a clock’s output transition! ?1 c, N d3 S& E5 \
from their ideal positions. The deviation can either be leading or
6 |; L: a# E$ ~' m3 @0 n; Slagging the ideal position. Jitter is usually specified in ± pico seconds.
# [" R) m5 }% l0 gJitter measurements can be classified into three categories:
0 {' }/ f( b" W, ]) O- ? Bcycle-to-cycle jitter, period jitter, and long-term jitter. All jitter measurements% n2 N0 ]1 u1 d; O' x
are at a specified voltage, usually Vcc/2 or 1.5V.1 u* F2 g+ s6 L( q; f0 F
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