®
VITESSE
SEMICONDUCTOR CORPORATION
Quad Transceiver
for Gigabit Ethernet and Fibre Channel
Advance Product Information
VSC7182
AC Characteristics
Figure 3: Transmit Timing Waveforms
RFC
TCi
T
1
T
2
TXi[0:9]
10-Bit Data
Data Valid
Data Valid
Data Valid
+/-TXi
T
RLAT
T
TLAT
TXi0
TXi1
TXi2
RFC
TCi
Table 3: Transmitter AC Characteristics
Parameter
T
1
T
2
T
SDR
,T
SDF
T
RLAT
T
TLAT
Description
TXi[0:9] setup time to the rising edge
of TCi or RFC
TXi[0:9] hold time after the rising
edge of TCi or RFC
TXi+/TXi- rise and fall time
Latency from rising edge of RFC to
TXi0 appearing on TX+/TX-
Latency from rising edge of TCi to
TXi0 appearing on TX+/TX-
Min
1.5
Typ
—
Max
—
Units
ns
Conditions
Measured between the valid
data level of TXi[0:9] to the
1.4V point of TCi or RFC
1.0
—
7bc +
0.66ns
5bc +
0.66ns
—
—
—
—
—
300
7bc +
1.46ns
11bc
+
1.46ns
ns
ps
20% to 80%, 75Ω load to
V
DD
/2, tested on a sample
basis
bc = bit clocks
ns = nanoseconds
ns
bc = bit clocks
ns = nanoseconds
Transmitter Output Jitter
RJ
DJ
Random jitter (rms)
Serial data output deterministic jitter
(pk-pk)
—
—
5
35
8
80
ps
ps
Measured at SO+/-, 1 sigma
deviation of 50% crossing
point
IEEE 802.3Z Clause 38.68,
tested on a sample basis
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VITESSE
SEMICONDUCTOR CORPORATION
• 741 Calle Plano • Camarillo, CA 93012
Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com
Internet: www.vitesse.com
G52307-0, Rev 2.2
10/10/00
VITESSE [ VITESSE SEMICONDUCTOR CORPORATION ]
