LAN8820 Datasheet, PDF (17/83 Pages) Microchip Technology – RGMII 10/100/1000 Ethernet Transceiver

LAN8820/LAN8820I
FIGURE 3-1:
CABLE CONNECTION TYPES: STRAIGHT-THROUGH, CROSSOVER, SEMI
CROSSOVER
RJ-45 8-pin Straight-Through
TR0P 1
TR0N 2
TR1P 3
TR2P 4
TR2N 5
TR1N ⁶
TR3P 7
TR3N 8
1 TR0P
2 _TR0N
3 TR1P
4 TR2P
5 TR2N
6 _TR1N
7 _TR3P
8 TR3N
Direct Connect Cable
RJ-45 8-pin Crossover
TR0P 1
TR0N 2
TR1P 3
TR2P 4
TR2N 5
TR1N ⁶
TR3P 7
TR3N 8
1 TR0P
2 _TR0N
3 TR1P
4 TR2P
5 TR2N
6 _TR1N
7 _TR3P
8 TR3N
Crossover Cable
RJ-45 8-pin Semi Crossover
TR0P 1
TR0N 2
TR1P 3
TR2P 4
TR2N 5
TR1N ⁶
TR3P 7
TR3N 8
1 TR0P
2 _TR0N
3 TR1P
4 TR2P
5 TR2N
6 _TR1N
7 _TR3P
8 TR3N
0/1 Straight, 2/3 Crossed
RJ-45 8-pin Semi Crossover
TR0P 1
TR0N 2
TR1P 3
TR2P 4
TR2N 5
TR1N ⁶
TR3P 7
TR3N 8
1 TR0P
2 _TR0N
3 TR1P
4 TR2P
5 TR2N
6 _TR1N
7 _TR3P
8 TR3N
0/1 Crossed, 2/3 Straight
3.2.1 REQUIRED ETHERNET MAGNETICS
The magnetics selected for use with the device should be an Auto-MDIX style magnetic available from several vendors.
Refer to Application Note 8.13 "Suggested Magnetics" for the latest qualified and suggested magnetics. Vendors and
part numbers are provided in this application note.
 2009-2015 Microchip Technology Inc.
DS00001871B-page 17