LAN8720i SMSC [SMSC Corporation], LAN8720i Datasheet - Page 73

• Manufacturer Part Number: LAN8720i
• Description: Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX Support
• Manufacturer: SMSC [SMSC Corporation]

Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX Support
Datasheet
Chapter 8 Application Notes
SMSC LAN8720/LAN8720i
8.1
8.1.1
Interface
RMII
The LAN8720 requires few external components. The voltage on the magnetics center tap can range
from 2.5 - 3.3V.
RMII Diagram
Application Diagram
2
2
2
nINT
MDIO
MDC
TXD[1:0]
TXEN
RXD[1:0]
RXER
LED[2:1]
nRST
Figure 8.1 Simplified Application Diagram
10/100 PHY
LAN8720
24-QFN
RMII
DATASHEET
XTAL1/CLKIN
73
XTAL2
RXN
RXP
TXN
TXP
Mag
25MHz
Revision 1.0 (05-28-09)
RJ45