LAN8720A-CP SMSC, LAN8720A-CP Datasheet - Page 35

• Manufacturer Part Number: LAN8720A-CP
• Description: TXRX ETHERNET 10/100 RMII
• Manufacturer: SMSC
• Type: Transceiverr

Specifications of LAN8720A-CP

• Number Of Drivers/receivers: 4/4
• Protocol: RMII
• Voltage - Supply: 1.6 V ~ 3.6 V
• Mounting Type: Surface Mount
• Package / Case: 24-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 638-1080

Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX Support
Datasheet
SMSC LAN8720A/LAN8720Ai
accepting 50MHz
REF_CLK
Capable of
MAC
clock
In some system architectures, a 25MHz clock source is available. The device can be used to generate
the REF_CLK to the MAC as shown in
only a 25MHz clock can be used (clock cannot be 50MHz). Similar to the 25MHz crystal mode, the
nINT function is disabled.
Interface
RMII
Figure 3.8 Sourcing REF_CLK from a 25MHz Crystal
2
2
2
MDIO
MDC
TXD[1:0]
TXEN
RXD[1:0]
CRS_DV
RXER
REFCLKO
LED[2:1]
nRST
LAN8720A/LAN8720Ai
DATASHEET
10/100 PHY
Figure
24-QFN
35
RMII
3.9. It is important to note that in this specific example,
XTAL1/CLKIN
XTAL2
RXN
RXP
TXP
TXN
Note: nINT not available in
this configuration
Mag
25MHz
Revision 1.2 (11-10-10)
RJ45