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參數(shù)資料
| 型號： | VSC8113QB2 |
| 廠商： | VITESSE SEMICONDUCTOR CORP |
| 元件分類： | 數(shù)字傳輸電路 |
| 英文描述： | Modular Connector; No. of Contacts:8; Approval Categories:FCC part 68, Subpart F, IEC-603-7 compliant; Meet ITA/EIA requirements; UL94V-0 fire-retardant rated; Body Material:Fire-Retardant Plastic; Color:Green RoHS Compliant: Yes |
| 中文描述： | TRANSCEIVER, PQFP100 |
| 封裝： | 14 X 20 MM, 2.70 MM HEIGHT, PLASTIC, QFP-100 |
| 文件頁數(shù)： | 8/28頁 |
| 文件大?。?/td> | 484K |
| 代理商： | VSC8113QB2 |
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VITESSE
Data Sheet
VSC8113
ATM/SONET/SDH 622 Mb/s Transceiver Mux/Demux
with Integrated Clock Generation and Clock Recovery
Page 8
VITESSE
SEMICONDUCTOR CORPORATION
741 Calle Plano, Camarillo, CA 93012 805/388-3700 FAX: 805/987-5896
G52154-0, Rev 4.2
3/19/99
Figure 6: External Integrator Capacitor
Clock Recovery
The fully monolithic Clock Recovery Unit (CRU) consists of a Phase Detector, a Frequency Detector, a
Loop Filter and a Voltage Controlled Oscillator (VCO). The phase detector compares the phase information of
the incoming data with the recovered clock. The frequency detector compares the frequency component of the
data input with the recovered clock to provide the pull in energy during lock acquisition. The LoopFilter inte-
grates the phase information from the phase and frequency detectors and provides the control voltage to the
VCO.
The CRU provides a lock detect function. If the frequencies of the serial data stream and the CRU’s recov-
ered clock are different, a data bit in the serial data stream will occasionally be dropped. If the Frequency Detec-
tor does not detect this condition in a moving 1.5
μ
s window, the CRULOCKDET output is asserted to signal
that the CRU is frequency locked to the serial data stream. This output is forced low if it detects that a data bit is
dropped or if the recovered clock frequency drifts more than 5% from the CMU’s output frequency.
+
-
CP1
CP2
CN1
CN2
CP = 0.1
μ
F
CN = 0.1
μ
F
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| VSC8114 | 制造商:VITESSE 制造商全稱:Vitesse Semiconductor Corporation 功能描述:ATM/SONET/SDH 622 Mb/s Transceiver Mux/Demux with Integrated Clock Generation and Clock Recovery |
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| VSC8114QB1 | 制造商:VITESSE 制造商全稱:Vitesse Semiconductor Corporation 功能描述:ATM/SONET/SDH 622 Mb/s Transceiver Mux/Demux with Integrated Clock Generation and Clock Recovery |
| VSC8114QB2 | 制造商:VITESSE 制造商全稱:Vitesse Semiconductor Corporation 功能描述:ATM/SONET/SDH 622 Mb/s Transceiver Mux/Demux with Integrated Clock Generation and Clock Recovery |
| VSC8115 | 制造商:VITESSE 制造商全稱:Vitesse Semiconductor Corporation 功能描述:STS-12/STS-3 Multi Rate Clock and Data Recovery Unit |
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