FCM -8519-1-T4/FCM-8519-2-T4 Product Specification
Finisar
IV. High Speed Electrical Interface
All high-speed PECL signals to and from the host board are AC coupled internally.
High Speed Electrical Host
– GBIC Interface
Parameter
Data Input Voltage
From Host Board to
GBIC
Data Output Voltage
from GBIC to Host
Board
Tx Input Impedance
Rx Output Impedance
Symbol
V
in
Min
650
Typ
Max
2000
Units
mV
Notes/Conditions
PECL differential peak - peak
V
out
370
2000
mV
PECL differential peak - peak
Z
in
Z
out
75
75
ohm
ohm
Table 6. High-speed electrical interface - host to GBIC connector
All high speed PECL signals to and from the copper transmission line are AC coupled
internally and terminated into 75Ω (150Ω differential).
High Speed GBIC –
Transmission Line Interface
Parameter
Symbol
Transmit Output
V
TX, out
Amplitude
Receive Input
V
RX, in
Amplitude
Transmitter Total Jitter
J
t
at Line Output
Receiver Total Jitter at
J
r
GBIC output
Transmit Rise/Fall
T
rise/fall
Time
Tx Output Impedance
Z
out,TX
Rx Input Impedance
Z
in,RX
Min
1100
400
Typ
Max
2000
2000
223
568
85
75
75
327
Units
mV
mV
ps
ps
ps
ohm
ohm
Notes/Conditions
PECL differential peak - peak
PECL differential peak - peak
Input to GBIC from host < 192 ps
jitter per IEEE802.3
Input to GBIC from line < 528ps
jitter per IEEE802.3
Table 7. High-speed electrical interface – GBIC to line connector
©
Finisar Corporation 03/10/2000
Page 4
FINISAR [ FINISAR CORPORATION. ]
