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
VTT
PRBS_IN
RAT
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
PWR
-2V
ECL
ECL
GND
GND
ECL
ECL
GND
ECL
ECL
-2V
I
PRBS Transmitter Init
1/0 Ratio selector
I
VCC
PWR
VCC
PWR
LEN_SEL0
LEN_SEL1
VCC
I
Length Select Signal
Length Select Signal
I
PWR
MR
I
Master Reset
FR_INV
VTT
I
Frame Invert Signal
PWR
INV
I
ECL
N/C
Output Invert Signal
IS
N/C
VCC
PWR
GND
ECL
VTT
ECL
ECL
ECL
ECL
LOAD_PAT
TEST
I
I
I
I
I
I
PRBS Receiver Init
Test Input
GATE
External Gate Signal
External/Internal Gate
Error Counter Output Sel.
Error Counter Output Sel.
GATE_SEL
CNT_SEL0
CNT_SEL1
Page 16
VITESSE SEMICONDUCTOR CORPORATION
741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896
G52207-0, Rev. 3.0
4/3/98
VITESSE [ VITESSE SEMICONDUCTOR CORPORATION ]
