LM3S8730 Datasheet, PDF (470/502 Pages) List of Unclassifed Manufacturers – Microcontroller

Electrical Characteristics
20.2.4
Figure 20-2. I²C Timing
I2
I6
I5
I2CSCL
I1
I4
I7
I8 I3
I9
I2CSDA
Ethernet Controller
Table 20-9. 100BASE-TX Transmitter Characteristics^a
Parameter Name
Min Nom Max Unit
Peak output amplitude
950 - 1050 mVpk
Output amplitude symmetry 0.98 - 1.02 mVpk
Output overshoot
-- 5%
Rise/Fall time
3 - 5 ns
Rise/Fall time imbalance
- - 500 ps
Duty cycle distortion
- - - ps
Jitter
- - 1.4 ns
a. Measured at the line side of the transformer.
Table 20-10. 100BASE-TX Transmitter Characteristics (informative)^a
Parameter Name
Min Nom Max Unit
Return loss
16 - - dB
Open-circuit inductance 350 - - µs
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 20-11. 100BASE-TX Receiver Characteristics
Parameter Name
Min Nom Max Unit
Signal detect assertion threshold 600 700
mVppd
Signal detect de-assertion threshold 350 425 - mVppd
Differential input resistance
20 - - kΩ
Jitter tolerance (pk-pk)
4 - - ns
Baseline wander tracking
-75 - +75 %
Signal detect assertion time
- - 1000 µs
Signal detect de-assertion time
- - 4 µs
Table 20-12. 10BASE-T Transmitter Characteristics^a
Parameter Name
Min Nom Max Unit
Peak differential output signal 2.2 - 2.8 V
Harmonic content
27 - - dB
Link pulse width
- 100 - ns
470
September 02, 2007
Preliminary