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參數(shù)資料
| 型號： | 97CFDC |
| 廠商： | SMSC Corporation |
| 英文描述： | USB FLOPPY DISK CONTROLLER |
| 中文描述： | 軟盤控制器的USB |
| 文件頁數(shù)： | 8/20頁 |
| 文件大?。?/td> | 143K |
| 代理商： | 97CFDC |
SMSC DS – USB97CFDC
Page 16
Rev. 12/15/2000
USB AC PARAMETERS
Full Speed: 4 to 20ns at CL = 50pF
Differential
Data Lines
10%
Rise Time
90%
Fall Time
tF
tR
10%
90%
CL
FIGURE 7 - DATA SIGNAL RISE AND FALL TIME
TPERIOD
Differential
Data Lines
Crossover
Points
Paired
Transitions
N * TPERIOD + TxJR2
Consecutive
Transitions
N * TPERIOD + TxJR1
FIGURE 8 - DIFFERENTIAL DATA JITTER
TPERIOD
Differential
Data Lines
Crossover
Point
Crossover
Point Extended
Source EOP Width:
TEOPT
Receiver EOP Width: TEOPR1, TEOPR2
Diff. Data to
SE0 Skew
N * TPERIOD + TDEOP
FIGURE 9 - DIFFERENTIAL TO EOP TRANSITION SKEW AND EOP WIDTH
Differential
Data Lines
Paired
Transitions
N * TPERIOD + TJR2
TPERIOD
Consecutive
Transitions
N * TPERIOD + TJR1
TJR
TJR1
TJR2
FIGURE 10 - RECEIVER JITTER TOLERANCE
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