VITESSE
SEMICONDUCTOR CORPORATION
Advance Product Information
VSC7186
Figure 5: RFC1 Waveform
Quad Transceiver
for Gigabit Ethernet
T
L
RFC1
T
H
V
IH(MIN)
V
IL(MAX)
Table 4: Reference Clock Requirements
Parameters
Description
Min
Max
Units
Conditions
Range over which both transmit and
receive reference clocks on any link
may be centered
Maximum frequency offset between
transmit and receive reference clocks
on one link
Measured at 1.4V
Between V
IL(max)
and V
IH(min)
FR
Frequency Range
105
136
MHz
FO
DC
T
RCR
,T
RCF
Frequency Offset
RFC1 duty cycle
RFC1 rise and fall time
-200
200
ppm.
35
—
65
1.5
%
ns.
G52306-0, Rev. 2.0
3/27/00
VITESSE
SEMICONDUCTOR CORPORATION
741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896
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