LAN8720A-CP-TR Standard Microsystems (SMSC), LAN8720A-CP-TR Datasheet - Page 35

• Manufacturer Part Number: LAN8720A-CP-TR
• Description: SMALL FOOTPRINT RMII 10/100 ETHERNET TR
• Manufacturer: Standard Microsystems (SMSC)

Specifications of LAN8720A-CP-TR

• Number Of Receivers: 1
• Protocols Supported: IEEE 802.3
• Operating Supply Voltage (typ): 1.8/2.5/3.3V
• Package Type: QFN
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Operating Temperature (max): 85C
• Operating Temperature (min): 0C
• Lead Free Status / Rohs Status: Compliant

Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX Support
Datasheet
SMSC LAN8720/LAN8720i
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 3.6 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
DATASHEET
10/100 PHY
Figure
LAN8720
24-QFN
35
RMII
3.7. 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 1.0 (12-09-09)
RJ45