VSC8121 データシートの表示（PDF） - Vitesse Semiconductor
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VSC8121 Datasheet PDF : 18 Pages
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VITESSE
SEMICONDUCTOR CORPORATION
Data Sheet
VSC8121
2.488GHz SONET/SDH
Clock Generator
Table 6: Package Pin Identification
Signal Name
NC
NC
NC
NC
NC
NC
NC
VCCT
NC
NC
NC
NC
NC
VEET
REFCLK
REFSEL[0]
REFSEL[1]
LSCLK
VEE
NC
NC
NC
NC
NC
NC
VCC
CO
CON
VCCP
NC
NC
NC
NC
NC
NC
VEEANA
VCCANA
NC
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
I/O
-
-
-
-
-
-
-
Positive Supply
-
-
-
-
-
Negative Supply
TTL Input
TTL Input
TTL Input
TTL Output
Negative Supply
-
-
-
-
-
-
Positive Supply
Output
Output
Positive Supply
-
-
-
-
-
-
Negative Supply
Positive Supply
-
Level
-
-
-
-
-
-
-
3.3V
-
-
-
-
-
GND
TTL
TTL
TTL
TTL
GND
-
-
-
-
-
-
3.3V
2.7 - 3.3V
2.7 - 3.3V
3.3V
-
-
-
-
-
-
GND
3.3V
-
Description
Do not connect, leave open(1)
Do not connect, leave open(1)
Do not connect, leave open(1)
Do not connect, leave open(1)
Do not connect, leave open(1)
Do not connect, leave open(1)
Do not connect, leave open(1)
For TTL I/O
Do not connect, leave open(1)
Do not connect, leave open(1)
Do not connect, leave open(1)
Do not connect, leave open(1)
Do not connect, leave open(1)
For TTL I/O
Reference Clock
Selects Reference Frequency
Selects Reference Frequency
Low Speed PLL Output
Do not connect, leave open(1)
Do not connect, leave open(1)
Do not connect, leave open(1)
Do not connect, leave open(1)
Do not connect, leave open(1)
Do not connect, leave open(1)
High-Speed Clock Out
High-Speed Clock Out Complement
Supply for High-Speed Outputs (2)
Do not connect, leave open(1)
Do not connect, leave open(1)
Do not connect, leave open(1)
Do not connect, leave open(1)
Do not connect, leave open(1)
Do not connect, leave open(1)
For Analog Section
For Analog Section(2)
Do not connect, leave open(1)
G52163-0, Rev 4.2
04/16/01
© 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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