VITESSE
SEMICONDUCTOR CORPORATION
2.7Gb/s Asynchronous
Dual 2x2 Crosspoint Switch
Table 10: Pin Identification
Data Sheet
VSC830
Function
Positive Supply
Negative Supply
Negative Supply
Negative Supply
Negative Supply
Positive Supply
Positive Supply
Positive Supply
Positive Supply
Termination Enable
Signal Name
V
CC
V
EE
1A
V
EE
2A
V
EE
1B
V
EE
2B
V
CC
P1A
V
CC
P2A
V
CC
P1B
V
CC
P2B
TERM_ENABLE_A
Pin(s)
1, 5, 7, 11, 12,
16, 28, 40, 44
34, 35
32, 33
23, 24
21, 22
38
29
27
18
39
Description
Global supply for chip
For channel output 1A. Must always be powered on.
For output 2A. Connect to VCC to power-off.
For output 1B. Connect to VCC to power-off.
For output 2B. Connect to VCC to power-off.
Output driver supply for channel 1A
Output driver supply for channel 2A
Output driver supply for channel 1B
Output driver supply for channel 2B
Input termination enable for the “A” switch.
Normally low (VEE). Connect to VCC to enable
internal 100 ohm termination between AxA+ inputs.
Input termination enable for the “B” switch.
Normally low (VEE). Connect to VCC to enable
internal 100Ω termination between AxA+ inputs.
PECL/TTL interface control
Channel 1A differential signal input
Channel 1A input selector
Channel 1A differential output
Channel 2A differential signal input
Channel 2A input selector
Channel 2A differential output
Channel 1B differential signal input
Channel 1B input selector
Channel 1B differential output
Channel 2B differential signal input
Channel 2B input selector
Channel 2B differential output
TERM_ENABLE_B
PEMODE
A1A±
S1A
Y1A±
A2A±
S2A
Y2A±
A1B±
S1B
Y1B±
A2B±
S2B
Y2B±
17
6
41, 42
43
37, 36
3, 4
2
31, 30
8, 9
10
26, 25
14, 15
13
20, 19
Termination Enable
Control
PECL Input
PECL/TTL Input
PECL Output
PECL Input
PECL/TTL Input
PECL Output
PECL Input
PECL/TTL Input
PECL Output
PECL Input
PECL/TTL Input
PECL Output
Page 8
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VITESSE
SEMICONDUCTOR CORPORATION
• 741 Calle Plano • Camarillo, CA 93012
Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com
Internet: www.vitesse.com
G52192-0, Rev 4.0
05/23/01
VITESSE [ VITESSE SEMICONDUCTOR CORPORATION ]
