VSC8132 View Datasheet(PDF) - Vitesse Semiconductor
Part Name
Description
Manufacturer
VSC8132 Datasheet PDF : 14 Pages
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VITESSE
SEMICONDUCTOR CORPORATION
Preliminary Data Sheet
VSC8132
2.488Gb/s 1:32 SONET/SDH Demux
CLK78 (Out)(1)
Figure 4: Framing Sequence
Missed Clock
Pulse(1)
Approximately <110µs
SYNC PULSE (Out)
OOFN (In) (asynchronous)
Set HIGH, less than 110µs
after SYNC goes HIGH
NOTE: (1) No missing clock pulse for CLK78 when VSC8132 is working as a dumb demux.
Once frame occurs and OOFN is set HIGH, the no framing will occur until
OOFN is set LOW again. The VSC8132 will remain framed with SONET frame.
Table 1: AC Characteristics
Parameters
Description
tDATApd
tCLKRpd
tCLKFpd
tDEDGE
tCLKEDGE
tCONEDGE
tSERSU
tSERHO
fMAX
tCLK38Rpd
tCLK38Fpd
tCLK51Rpd
tCLK51Fpd
tPD1, tPD2
Data Valid From Falling Edge of 77.76MHz
High-speed Clock Rising Edge to 77.76MHz
Clock Rising Edge
High-Speed Clock Rising Edge to 77.76MHz
Clock Falling Edge
D[0:31] Edge Rate (10%-90%)
77.76, 51.84, 38.88MHz Edge Rates (10%-90%)
Control Signals (SYNC, PARITY, DTALARM,
and CKALARM) Edge Rate (10%-90%)
DI+ Setup Time with Respect to Falling Edge of
CLKI+
DI+ Hold Time with Respect to Falling Edge of
CLKI+
Demux Input Maximum Clock Frequency
High-Speed Clock Rising Edge to 38.88MHz
Clock Rising Edge.
High-Speed Clock Rising Edge to 38.88MHz
Clock Falling Edge
High-Speed Clock Rising Edge to 51.84MHz
Clock Rising Edge
High-Speed Clock Rising Edge to 51.84MHz
Clock Falling Edge
Data Invalid Window
Min
230
2.5
2.3
-
-
-
100
75
-
2.0
2.0
2.0
2.0
0, 230
Typ Max Units Conditions
1250 ps External load = 5pf
8.0
ns External load = 5pf
7.1
ns External load = 5pf
2.0
ns External load = 5pf
2.0
ns External load = 5pf
2.0
ns External load = 5pf
-
ps See Figure 3
-
ps See Figure 3
2.9 GHz
6.3
ns External load = 5pf
5.9
ns External load = 5pf
6.0
ns External load = 5pf
5.9
ns External load = 5pf
0, 1250 ps
G52250-0, Rev 3.1
12/7/00
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com
Internet: www.vitesse.com
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