VSC8122 データシートの表示（PDF） - Vitesse Semiconductor
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VSC8122 Datasheet PDF : 14 Pages
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VITESSE
SEMICONDUCTOR CORPORATION
Data Sheet
VSC8122
Multi-Rate SONET/SDH
Clock and Data Recovery IC
Table 8: Pin Identifications
Pin #
Name
I/O
1
FSEL0
I
2
FSEL1
I
3
REF_INPUTSEL
I
4
NC
—
5
VEE_ANA
I
6
VCC_ANA
I
7
NC
—
8
NC
—
9
LOL
O
10
NOREF
O
11
VCC
I
12
FILTAO
I
13
FILTAI
I
14
FILTAIN
I
15
FILTAON
I
16
VEE
I
17
VCC
I
18
NC
—
19
NC
—
20
NC
—
21
NC
—
22
NC
—
23
NC
—
24
VCC
I
25
VEE
I
26
VCC
I
27
CO-
O
28
CO+
O
29
VCC
I
30
VEE
I
31
VCC
I
32
NC
—
33
NC
—
34
NC
—
Level
TTL
TTL
TTL
—
GND typ.
+3.3V typ.
—
—
TTL
TTL
+3.3V typ.
—
—
—
—
GND typ.
+3.3V typ.
—
—
—
—
—
—
+3.3V typ.
GND typ.
+3.3V typ.
HS
HS
+3.3V typ.
GND typ.
+3.3V typ.
—
—
—
Description
Selectable input rate pin 0
Selectable input rate pin 1
Toggle between REFCK1 and REFCK0
No connect, leave unconnected(1)
Negative power supply pins for analog parts of CMU
Positive power supply pins for analog parts of CMU
No connect, leave unconnected
No connect, leave unconnected
Loss of lock indication
No reference output. Active HIGH for REFCK far off the
expected frequency.
Positive power supply
Loop filter pin - connect via capacitor to FILTAI
Loop filter pin - connect via capacitor to FILTAO
Loop filter pin - connect via capacitor to FILTAON
Loop filter pin - connect via capacitor to FILTAIN
Negative power supply
Positive power supply
No connect, leave unconnected(1)
No connect, leave unconnected(1)
No connect, leave unconnected(1)
No connect, leave unconnected(1)
No connect, leave unconnected(1)
No connect, leave unconnected(1)
Positive power supply
Negative power supply
Positive power supply
High-speed clock output, complement
High-speed clock output, true
Positive power supply
Negative power supply
Positive power supply
No connect, leave unconnected(1)
No connect, leave unconnected(1)
No connect, leave unconnected(1)
G52228-0, Rev 4.1
01/05/01
© 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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