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LM3S6422 Datasheet, PDF (572/609 Pages) Texas Instruments – Stellaris® LM3S6422 Microcontroller
Electrical Characteristics
Table 18-20. 100BASE-TX Transmitter Characteristics (continued)
Parameter Name
Min
Nom
Max
Unit
Duty cycle distortion
-
-
-
ps
Jitter
-
-
1.4
ns
a. Measured at the line side of the transformer.
Table 18-21. 100BASE-TX Transmitter Characteristics (informative)a
Parameter Name
Min
Nom
Max
Unit
Return loss
16
-
-
dB
Open-circuit inductance
350
-
-
µH
a. The specifications in this table are included for information only. They are mainly a function of the external transformer
and termination resistors used for measurements.
Table 18-22. 100BASE-TX Receiver Characteristics
Parameter Name
Min
Signal detect assertion threshold
600
Signal detect de-assertion threshold
350
Differential input resistance
-
Jitter tolerance (pk-pk)
4
Baseline wander tracking
-75
Signal detect assertion time
-
Signal detect de-assertion time
-
Nom
700
425
20
-
-
-
-
Max
-
-
-
-
+75
1000
4
Unit
mVppd
mVppd
kΩ
ns
%
µs
µs
Table 18-23. 10BASE-T Transmitter Characteristicsa
Parameter Name
Min
Nom
Max
Unit
Peak differential output signal
2.2
-
2.8
V
Harmonic content
27
-
-
dB
Link pulse width
-
100
-
ns
Start-of-idle pulse width
-
300
-
ns
350
a. The Manchester-encoded data pulses, the link pulse and the start-of-idle pulse are tested against the templates and using
the procedures found in Clause 14 of IEEE 802.3.
Table 18-24. 10BASE-T Transmitter Characteristics (informative)a
Parameter Name
Min
Nom
Max
Unit
Output return loss
15
-
-
dB
Output impedance balance
29-17log(f/10)
-
-
dB
Peak common-mode output voltage
-
-
50
mV
Common-mode rejection
-
-
100
mV
Common-mode rejection jitter
-
-
1
ns
a. The specifications in this table are included for information only. They are mainly a function of the external transformer
and termination resistors used for measurements.
572
June 18, 2012
Texas Instruments-Production Data