Figure 23-17. I
2
C Timing
I2CSCL
I2CSDA
I1
I2
I4
I6
I7 I8
I5
I3 I9
23.16 Ethernet Controller
Table 23-26. Ethernet Controller DC Characteristics
UnitValueParameter NameParameter
Ω12.4K ± 1 %Value of the pull-down resistor on the ERBIAS pinR
EBIAS
Table 23-27. 100BASE-TX Transmitter Characteristics
a
UnitMaxNomMinParameter Name
mVpk1050-950Peak output amplitude
%102-98Output amplitude symmetry
%5--Output overshoot
ns5-3Rise/Fall time
ps500--Rise/Fall time imbalance
ps±250--Duty cycle distortion
ns1.4--Jitter
a. Measured at the line side of the transformer.
Table 23-28. 100BASE-TX Transmitter Characteristics (informative)
a
UnitMaxNomMinParameter Name
dB--16Return loss
µH--350Open-circuit inductance
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 23-29. 100BASE-TX Receiver Characteristics
UnitMaxNomMinParameter Name
mVppd-700600Signal detect assertion threshold
mVppd-425350Signal detect de-assertion threshold
kΩ-3.6-Differential input resistance
ns--4Jitter tolerance (pk-pk)
%+80--80Baseline wander tracking
µs1000--Signal detect assertion time
µs4--Signal detect de-assertion time
July 24, 2012996
Texas Instruments-Production Data
Electrical Characteristics
OBSOLETE: TI has discontinued production of this device.