VITESSE
SEMICONDUCTOR CORPORATION
Advance Product Information
125MHz Octal Deskew
VSC6280/81/82
Pin #
Signal
Signal Type
I/O Type
Comments
Pin Description
115
116
117
118
119
120
121
122
123
124
125
126
127
128
PTENN
TSTRST
TSTSEL
TSTENN
VCC
I
TTL
TTL
TTL
TTL
---
PLL Test Enable -- Active Low
Test Mode Reset Input
I
I
Selects between Coarse/Fine Vernier
Test Mode Enable -- Active Low
Ground
I
Ground
0V
-2V
3.3V
0V
IN0N
IN0
I
ECL
ECL
---
I
Input Channel #0
ECL/DCFL Power
VTT
Power
IN1N
IN1
I
ECL
ECL
---
I
Input Channel #1
VDD
Power
SCFL Logic Power
IN2N
IN2
I
ECL
ECL
---
I
Input Channel #2
Ground
VCC
Ground
Notes:
1. Above Pad/Pin Table is for VSC6281 which has 16 inputs and 16 outputs.
2. For VSC6280 only inputs IN0, IN2, IN4,IN6, IN8, IN10, IN12, IN14 and outputs OUT0, OUT2, OUT4, OUT6, OUT8,
OUT10, OUT12 and OUT14 are used.
3. For VSC6282 only one input IN0 and outputs OUT0, OUT2, OUT4, OUT6, OUT8, OUT10, OUT12 and OUT14 are used.
4. In the user mode the following test inputs should be connected on the board as descri bed:
TSTENN = TTL High
TSTRST = TTL Low
PTENN = TTL High
TSTSEL = TTL Low
Page 14
VITESSE SEMICONDUCTOR CORPORATION
741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896
G52153-0, Rev. 2.2
8/5/98
VITESSE [ VITESSE SEMICONDUCTOR CORPORATION ]
