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10/100 Non-PCI Ethernet Single Chip MAC + PHY
Datasheet
Revision 1.91 (08-18-08) 108 SMSC LAN91C111 REV C
DATASHEET
13.3 Twisted Pair Characteristics, Transmit
V
DD
= 3.3v +/- 5%
RBIAS = 11K +/- 1 %, no load
SYM PARAMETER
LIMIT
UNIT CONDITIONS
MIN TYP MAX
T
ov
TP Differential Output
Voltage
0.950 1.000 1.050 Vpk 100 Mbps, UTP Mode,
100 Ohm Load
1.165 1.225 1.285 Vpk 100 Mbps, STP Mode,
150 Ohm Load
2.2 2.5 2.8 Vpk 10 Mbps, UTP Mode,
100 Ohm Load
2.694 3.062 3.429 Vpk 10 Mbps, STP Mode,
150 Ohm Load
T
ovs
TP Differential Output
Voltage Symmetry
98 102 % 100 Mbps, Ratio of Positive And
Negative Amplitude Peaks on TPO±
T
ORF
TP Differential Output
Rise And Fall Time
3.0 5.0 nS 100 Mbps
TRFADJ [1:0] = 10
T
ORFS
TP Differential Output
Rise And Fall Time
Symmetry
+/-0.5 nS 100 Mbps, Difference Between Rise
and Fall Times on TPO±
T
oDC
TP Differential Output
Duty Cycle Distortion
+/-
0.25
nS 100 Mbps, Output Data=0101... NRZ
Pattern Unscrambled, Measure At
50% Points
T
oJ
TP Differential Output
Jitter
+/-1.4 nS 100 Mbps, Output Data=scrambled /H/
T
oo
TP Differential Output
Overshoot
5.0 % 100 Mbps
T
OVT
TP Differential Output
Voltage Template
See Figure 7.4 10 Mbps
T
SOI
TP Differential Output
SOI Voltage
Template
See Figure 7.6 10 Mbps
T
LPT
TP Differential Output
Link Pulse Voltage
Template
See Figure 7.7 10 Mbps, NLP and FLP
T
OIV
TP Differential Output
Idle Voltage
+/-50 mV 10 Mbps.
T
OIA
TP Output Current 38 40 42 mA pk 100 Mbps, UTP with TLVL[3:0]=1000
31.06 32.66 34.26 mA pk 100 Mbps, STP with TLVL[3:0]=1000
88 100 112 mA pk 10 Mbps, UTP with TLVL[3:0]=1000
71.86 81.64 91.44 mA pk 10 Mbps, STP with TLVL[3:0]=1000