VITESSE
SEMICONDUCTOR CORPORATION
Advance Product Information
Quad Transceiver
for Gigabit Ethernet
VSC7186
Figure 5: RFC1 Waveform
T
T
H
L
V
IH(MIN)
RFC1
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
105
136
MHz
FR
Frequency Range
Maximum frequency offset between
transmit and receive reference clocks
on one link
-200
200
ppm.
FO
DC
Frequency Offset
RFC1 duty cycle
35
65
%
Measured at 1.4V
TRCR,TRCF RFC1 rise and fall time
—
1.5
ns.
Between VIL(max) and VIH(min)
G52306-0, Rev. 2.0
3/27/00
VITESSE SEMICONDUCTOR CORPORATION
741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896
Page 7
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