LAN8720AI-CP SMSC, LAN8720AI-CP Datasheet - Page 12

• Manufacturer Part Number: LAN8720AI-CP
• Description: TXRX ETHERNET 10/100 RMII 24QFN
• Manufacturer: SMSC
• Type: Transceiverr

Specifications of LAN8720AI-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
• Product: Ethernet Transceivers
• Standard Supported: 802.3, 802.3u
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 1.6 V
• Maximum Operating Temperature: + 85 C
• Ethernet Connection Type: 10/100 Base-T
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 638-1084

Revision 1.2 (11-10-10)
NUM PINS
NUM PINS
NUM PINS
1
1
1
1
1
Note 2.2
Configuration
Input/Output
REFCLKO
SMI Clock
Channel 1
Channel 1
SMI Data
Function
Negative
Ethernet
Ethernet
Positive
NAME
NAME
NAME
TX/RX
TX/RX
LED 2
Select
nINT/
Strap
Configuration strap values are latched on power-on reset and system reset. Configuration
straps are identified by an underlined symbol name. Signals that function as configuration
straps must be augmented with an external resistor when connected to a load. Refer to
Section 3.7, "Configuration Straps," on page 31
Table 2.3 Serial Management Interface (SMI) Pins
SYMBOL
SYMBOL
SYMBOL
nINTSEL
MDIO
LED2
MDC
TXP
TXN
Table 2.2 LED Pins (continued)
Table 2.4 Ethernet Pins
DATASHEET
BUFFER
BUFFER
BUFFER
TYPE
TYPE
VOD8
TYPE
(PU)
O12
VIS/
AIO
AIO
VIS
IS
12
Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX Support
Link Speed LED Indication. This pin is driven
active when the operating speed is 100Mbps. It
is inactive when the operating speed is 10Mbps
or during line isolation.
Note:
This configuration strap selects the mode of the
nINT/REFCLKO pin.
See
configuration straps.
Note:
Serial Management Interface data input/output
Serial Management Interface clock
Transmit/Receive Positive Channel 1
Transmit/Receive Negative Channel 1
When nINTSEL is floated or pulled to VDD2A,
nINT is selected for operation on the
nINT/REFCLKO pin (default).
When nINTSEL is pulled low to VSS,
REFCLKO is selected for operation on the
nINT/REFCLKO pin.
Note 2.2
for additional information.
Refer to
page 37
Refer to See
and LED2 Polarity Selection," on
page 37
for more information on
DESCRIPTION
DESCRIPTION
DESCRIPTION
Section 3.8.1, "LEDs," on
for additional LED information.
for additional information.
Section 3.8.1.2, "nINTSEL
SMSC LAN8720A/LAN8720Ai
Datasheet