VITESSE
SEMICONDUCTOR CORPORATION
Data Sheet
1.6 Gb/s 16 x 32
Crosspoint Switch
VSC850
Name
Pin #
I/O
Level
Description
VCC
VCC
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
PWR
GND
GND
ECL
ECL
-2V
Ground
PWR
Ground
I8
I
Serial data in
Serial data in
-2.0V power supply
Serial data in
Serial data in
+3.3V power supply
Serial data in
Serial data in
Ground
IN8
I
VTT
PWR
I9
I
ECL
ECL
+3.3V
ECL
ECL
GND
GND
ECL
ECL
+3.3V
ECL
ECL
-2V
IN9
I
VTTL
I10
PWR
I
IN10
I
VCC
PWR
VCC
PWR
Ground
I11
I
Serial data in
Serial data in
+3.3V power supply
Serial data in
Serial data in
-2.0V power supply
Serial data in
Serial data in
Ground
IN11
I
VTTL
I12
PWR
I
IN12
I
VTT
PWR
I13
I
ECL
ECL
GND
GND
ECL
ECL
GND
ECL
ECL
-2V
IN13
I
VCC
PWR
VCC
PWR
Ground
I14
I
Serial data in
Serial data in
Ground
IN14
I
VCC
PWR
I15
I
I
Serial data in
Serial data in
-2.0V power supply
No connection
IN15
VTT
PWR
N/C
GSTROBE
VCC
I
TTL
GND
TTL
TTL
TTL
Latch enable to transfer holding register data to control latches
Ground
PWR
FLOWTHRU
BROADCAST
CONFMODE
I
I
I
Control signal to enable flow thru mode
Control signal to enable broadcast mode
Control signal to select configuration method
Page 10
VITESSE SEMICONDUCTOR CORPORATION
741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896
G52152-0 Rev. 4.0
6/4/99
VITESSE [ VITESSE SEMICONDUCTOR CORPORATION ]
