vsc8124 Vitesse Semiconductor Corp, vsc8124 Datasheet - Page 7

• Manufacturer Part Number: vsc8124
• Description: 2.488 Gb/s Quad Data Re-timer
• Manufacturer: Vitesse Semiconductor Corp

VSC8124
2/23/00
Target Specification
G52271-0, Rev. 1.14
Notes:
1) It is recommended that the VTERM pins from multiple inputs NOT be tied together, unless driven from a low impedance
2) The reference clock receivers have self-biased inputs.
3) For unused reference clock receivers, it is recommended to tie one side low by connecting a 1k Ohm resistor to V
supply.
letting the other side float.
Quad data Re-timer
Quad data Re-timer
REFCK Driver
Figure 5: High Speed Data Output Termination - AC Coupled
741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: [phone]
DOUT
DOUTN
DOUT
DOUTN
Figure 6: REFCK Input Termination - AC Coupled
VITESSE
SEMICONDUCTOR CORPORATION
VCC
VCC
VCC
VCC
50
50
50
50
VITESSE SEMICONDUCTOR CORPORATION
0.1 F
0.1 F
AC Coupled
DC Coupled
Z
Z
o
o
= 50
= 50
0.1 F
0.1 F
Z
Z
Z
Z
o
o
o
o
= 50
= 50
= 50
VTERM
= 50
50
50
DIN
DI
Quad data Re-timer
50
50
VCC
VCC
50
50
2.488 Gb/s Quad
Data Re-timer
ee
, and
Page 7