參數(shù)資料
型號: XRT75R12IB
廠商: EXAR CORP
元件分類: 數(shù)字傳輸電路
英文描述: TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
中文描述: DATACOM, PCM TRANSCEIVER, PBGA420
封裝: 35 X 35 MM, TBGA-420
文件頁數(shù): 41/89頁
文件大?。?/td> 457K
代理商: XRT75R12IB
PRELIMINARY
XRT75R12
REV. P1.0.2
TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR
38
5.1.2
ITU-T G.823 standard specifies that the clock and data recovery unit must be able to tolerate jitter up to certain
specified limits. Figure 27 shows the tolerance curve.
E3 Jitter Tolerance Requirements
As shown in the Figures above, in the jitter tolerance measurement, the dark line indicates the minimum level
of jitter that the E3/DS3/STS-1 compliant component must tolerate. Table 9 below shows the jitter amplitude
versus the modulation frequency for various standards.
F
IGURE
26. I
NPUT
J
ITTER
T
OLERANCE
F
OR
DS3/STS-1
F
IGURE
27. I
NPUT
J
ITTER
T
OLERANCE
FOR
E3
0.01
0.03
JITTER FREQUENCY (kHz)
15
1.5
0.3
2
20
0.15
0.1
J
p
)
10
5
0.3
100
GR-253 STS-1
GR-499 Cat II
GR-499 Cat I
XRT75R12
64
41
0.1
1.5
1
10
J
p
)
JITTER FREQUENCY (kHz)
800
ITU-T G.823
64
10
0.3
XRT75R12
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