LM3S8630 Datasheet, PDF (516/546 Pages) Texas Instruments – Stellaris® LM3S8630 Microcontroller

Electrical Characteristics
Table 20-21. 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 20-22. 10BASE-T Transmitter Characteristics^a
Parameter Name
Peak differential output signal
Harmonic content
Link pulse width
Start-of-idle pulse width
Min
Nom
Max
Unit
2.2
-
2.8
V
27
-
-
dB
-
100
-
ns
-
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 20-23. 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.
Table 20-24. 10BASE-T Receiver Characteristics
Parameter Name
DLL phase acquisition time
Jitter tolerance (pk-pk)
Input squelched threshold
Input unsquelched threshold
Differential input resistance
Bit error ratio
Common-mode rejection
Min
Nom
Max
Unit
-
10
-
BT
30
-
-
ns
500
600
700
mVppd
275
350
425
mVppd
-
20
-
kΩ
-
10^-10
-
-
25
-
-
V
Table 20-25. Isolation Transformers^a
Name
Turns ratio
Open-circuit inductance
Value
1 CT : 1 CT
350 uH (min)
Condition
+/- 5%
@ 10 mV, 10 kHz
516
April 04, 2010
Texas Instruments-Production Data