SMSC LAN9420 - Manual (Page 160)

Single-Chip Ethernet Controller with HP Auto-MDIX Support and PCI Interface
Datasheet
Revision 1.22 (09-25-08) 160 SMSC LAN9420/LAN9420i
DATASHEET
Note 5.10 Measured at line side of transformer, line replaced by 100
Ω (+/- 1%) resistor.
Note 5.11 Offset from 16nS pulse width at 50% of pulse peak.
Note 5.12 Measured differentially.
Note 5.13 Min/max voltages guaranteed as measured with 100
Ω resistive load.
Table 5.7 100BASE-TX Transceiver Characteristics
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Peak Differential Output Voltage High V
PPH
950 - 1050 mVpk Note 5.10
Peak Differential Output Voltage Low V
PPL
-950 - -1050 mVpk Note 5.10
Signal Amplitude Symmetry V
SS
98 - 102 % Note 5.10
Signal Rise and Fall Time T
RF
3.0 - 5.0 nS Note 5.10
Rise and Fall Symmetry T
RFS
- - 0.5 nS Note 5.10
Duty Cycle Distortion D
CD
35 50 65 % Note 5.11
Overshoot and Undershoot V
OS
- - 5 %
Jitter 1.4 nS Note 5.12
Table 5.8 10BASE-T Transceiver Characteristics
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Transmitter Peak Differential Output Voltage V
OUT
2.2 2.5 2.8 V Note 5.13
Receiver Differential Squelch Threshold V
DS
300 420 585 mV