VITESSE
SEMICONDUCTOR CORPORATION
Preliminary Datasheet
155/622 Mhz 16 Channel PRBS
Generator and Comparator.
VSC8109
Table 12: Pin Definitions
Signal
Pin
I/O
Level
Pin Description
VCC
I
75
76
PWR
N/C
N/C
PWR
PWR
N/C
N/C
PWR
I
GND
N/C
I
77
N/C
VCC
78
GND
GND
N/C
VCC
79
I
80
I
81
N/C
VCC
82
GND
ECL
ECL
-2V
XDATA0
XDATA1
VTT
83
External Data Input Bus
External Data Input Bus
84
I
85
PWR
I
XDATA2
XDATA3
VCC
86
ECL
ECL
GND
GND
ECL
ECL
GND
ECL
ECL
-2V
External Data Input Bus
External Data Input Bus
87
I
88
PWR
PWR
I
VCC
89
XDATA4
XDATA5
VCC
90
External Data Input Bus
External Data Input Bus
91
I
92
PWR
I
XDATA6
XDATA7
VTT
93
External Data Input Bus
External Data Input Bus
94
I
95
PWR
I
XDATA8
XDATA9
VCC
96
ECL
ECL
GND
ECL
ECL
ECL
ECL
ECL
ECL
GND
N/C
External Data Input Bus
External Data Input Bus
97
I
98
PWR
I
XDATA10
XDATA11
XDATA12
XDATA13
XDATA14
XDATA15
VCC
99
External Data Input Bus
External Data Input Bus
External Data Input Bus
External Data Input Bus
External Data Input Bus
External Data Input Bus
100
101
102
103
104
105
106
107
108
109
110
111
112
I
I
I
I
I
PWR
N/C
N/C
PWR
PWR
N/C
N/C
PWR
IO
IO
N/C
VCC
GND
GND
N/C
VCC
IO
IO
N/C
VCC
GND
G52207-0, Rev. 3.0
4/3/98
VITESSE SEMICONDUCTOR CORPORATION
741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896
Page 13
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