lan8720 Standard Microsystems Corp., lan8720 Datasheet - Page 72

• Manufacturer Part Number: lan8720
• Description: Small Footprint Rmii 10/100 Ethernet Transceiver With Hp Auto-mdix Support
• Manufacturer: Standard Microsystems Corp.

Revision 1.0 (04-15-09)
Peak Differential Output Voltage High
Peak Differential Output Voltage Low
Signal Amplitude Symmetry
Signal Rise & Fall Time
Rise & Fall Time Symmetry
Duty Cycle Distortion
Overshoot & Undershoot
Jitter
Transmitter Peak Differential Output Voltage
Receiver Differential Squelch Threshold
CRS_DV/MODE2
nINT/REFCLKO
RXER/PHYAD0
LED1/REGOFF
LED2/nINTSEL
RXD1/MODE1
Note 7.6
Note 7.7
Note 7.8
Note 7.9
PARAMETER
PARAMETER
NAME
MDIO
nRST
Table 7.11 Internal Pull-Up / Pull-Down Configurations (continued)
Measured at the line side of the transformer, line replaced by 100Ω (± 1%) resistor.
Offset from 16 nS pulse width at 50% of pulse peak
Measured differentially.
Min/max voltages guaranteed as measured with 100Ω resistive load.
Table 7.12 100Base-TX Transceiver Characteristics
Table 7.13 10BASE-T Transceiver Characteristics
SYMBOL
V
V
T
D
V
V
T
PPH
RFS
PPL
DATASHEET
RF
CD
OS
SS
SYMBOL
V
V
OUT
DS
72
-950
MIN
950
3.0
98
35
-
-
MIN
300
PULL-UP OR PULL-DOWN
2.2
Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX Support
TYP
50
-
-
-
-
-
-
Pull-down
Pull-down
TYP
420
2.5
Pull-up
Pull-up
Pull-up
Pull-up
Pull-up
Pull-up
-1050
MAX
1050
102
5.0
0.5
1.4
65
5
MAX
585
2.8
UNITS
mVpk
mVpk
SMSC LAN8720/LAN8720i
nS
nS
nS
UNITS
%
%
%
mV
V
Note 7.6
Note 7.6
Note 7.6
Note 7.6
Note 7.6
Note 7.7
Note 7.8
NOTES
Note 7.9
NOTES
Datasheet