lan8720 Standard Microsystems Corp., lan8720 Datasheet - Page 74
lan8720
Manufacturer Part Number
lan8720
Description
Small Footprint Rmii 10/100 Ethernet Transceiver With Hp Auto-mdix Support
Manufacturer
Standard Microsystems Corp.
Datasheet
1.LAN8720.pdf
(78 pages)
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Revision 1.0 (04-15-09)
8.1.2
8.1.3
LAN8720
24-QFN
Power Supply Diagram
Twisted-Pair Interface Diagram
1.8 - 3.3V
VDDDIO
Supply
VDD1A
VDD2A
RXN
TXN
RXP
TXP
R
C
20
23
22
1
19
21
Figure 8.3 High-Level System Diagram for Power
C
1uF
Analog
Supply
F
3.3V
C
C
BYPASS
BYPASS
Figure 8.5 Copper Interface Diagram
C
BYPASS
15
6
9
nRST
VDDCR
VDDIO
DATASHEET
49.9 Resistors
LAN8720
24-QFN
74
VSS
Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX Support
C
BYPASS
VDD1A
VDD2A
RBIAS
Magnetics
Analog
Supply
3.3V
Magnetic
2.5 - 3.3V
Supply
19
1
24
12k
C
C
75
75
BYPASS
BYPASS
Power to
magnetics
interface.
SMSC LAN8720/LAN8720i
1000 pF
3 kV
RJ45
1
2
3
4
5
6
7
8
Datasheet
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