LAN8820 Datasheet, PDF (33/83 Pages) Microchip Technology – RGMII 10/100/1000 Ethernet Transceiver

LAN8820/LAN8820I
3.10.2 POWER SUPPLY & TWISTED PAIR INTERFACE DIAGRAM
FIGURE 3-7:
POWER SUPPLY & TWISTED PAIR INTERFACE DIAGRAM
Power
Supply
1.2V
Power
Supply
2.5V
CBYPASS
LAN8820/LAN8820i
VDD12PLL
(x4) VDD12A
CBYPASS
VDD12BIAS
CBYPASS
x6
CBYPASS
x4
8.06K Ohm
1%
VDD12CORE (x6)
VDD25IO (x4)
ETHRBIAS
VSS
TR0P
TR0N
Circuitry within the dotted line is for Channel 0.
Duplicate this circuit for Channels 1, 2 and 3.
CBYPASS
Magnetics
75
0.022uF
49.9
49.9
Note: 0.022uF capacitor is optional. In
an EMI constrained environment,
populate this capacitor. The component
must be placed close to the transformer.
RJ45
1
2
3
4
5
6
7
8
1000 pF
2 kV
 2009-2015 Microchip Technology Inc.
DS00001871B-page 33