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Vitesse Semiconductor
Vitesse Semiconductor

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VSC8124 Datasheet

Target Specification

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VITESSE
SEMICONDUCTOR CORPORATION
Target Specification
VSC8124
2.488 Gb/s Quad
Data Re-timer
Features
• Four Channel 2.488 Gb/s Data Recovery
• SONET Quality Jitter Tolerance
• Fastlock Data Acquisition less than 200
Bit Times
• Loss of Signal Indicators
• Long Strings of Static Data Tolerated by the
Clock Recovery Circuit without Loss of Signal
• First Order Clock Recovery Loop Minimizes
Jitter Accumulation
• Differential on Chip Terminated Serial Data I/O
• Bypass for OC3, OC12 Data Rates
• 155.52 MHz Reference Clock Frequency
• 3.3V Supply Operation
• 14 x 14mm, 100 Pin Thermally Enhanced
TQFP Package
General Description
The VSC8124 is a four channel, 2.5 Gb/s data re-timer for cleaning up data downstream of optical links or
cross point switches. Serial data at the 2.5 Gb/s rate is independently re-timed on four channels, and driven dif-
ferentially by CML drivers. The re-timing function on each channel can be individually bypassed for lower rate
signals or test purposes. The VSC8124 provides four independent loss of signal indicators in the event of loss of
synchronous data transitions.
G52271-0, Rev. 1.14
2/23/00
© VITESSE SEMICONDUCTOR CORPORATION
741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896
Page 1



Vitesse Semiconductor
Vitesse Semiconductor

VSC8124 Datasheet Preview

VSC8124 Datasheet

Target Specification

No Preview Available !

VSC8124 pdf
VITESSE
SEMICONDUCTOR CORPORATION
2.488 Gb/s Quad
Data Re-timer
VSC8124 Block Diagram
Target Specification
VSC8124
SD3+
SD3-
RTBYP3
TTL
CML
LOSREL
TTL
RTBYP2
TTL
SD2+
CML
SD2-
REFCK0+
PECL
REFCK0-
REFCK1+
PECL
REFCK1-
REFCK+
TTL
0
1
SD1+
CML
SD1-
RTBYP1
TTL
FASTLOCK
TTL
RTBYP0
TTL
SD0+
CML
SD0-
Clock
Recovery
Unit
Clock
Recovery
Unit
Clock
Recovery
Unit
Clock
Recovery
Unit
1
0
1
0
1
0
1
0
CML
RDAT3+
RDAT3-
CML
RDAT2+
RDAT2-
LOSALMN
LOS
Logic
TTL
LOS3N
TTL
LOS2N
TTL
LOS1N
TTL
LOS0N
CML
RDAT1+
RDAT1-
CML
RDAT0+
RDAT0-
Page 2
© VITESSE SEMICONDUCTOR CORPORATION
741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896
G52271-0, Rev. 1.14
2/23/00


Part Number VSC8124
Description Target Specification
Maker Vitesse Semiconductor
Total Page 20 Pages
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VSC8124 pdf






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