LAN8740A Datasheet, PDF (13/136 Pages) Microchip Technology – Small Footprint MII/RMII 10/100 Energy Efficient Ethernet Transceiver with HP Auto-MDIX and flexPWR® Technology

LAN8740A/LAN8740Ai
TABLE 2-3: SERIAL MANAGEMENT INTERFACE (SMI) PINS
Num Pins
1
Name
SMI Data
Input/Output
1
SMI Clock
Symbol
MDIO
MDC
Buffer Type
Description
VIS/
VO8
(PU)
VIS
Serial Management Interface data input/output
Serial Management Interface clock
TABLE 2-4: ETHERNET PINS
Num Pins
1
1
1
1
Name
Ethernet
TX/RX Posi-
tive Channel
1
Ethernet
TX/RX Nega-
tive Channel
1
Ethernet
TX/RX Posi-
tive Channel
2
Ethernet
TX/RX Nega-
tive Channel
2
Symbol
TXP
TXN
RXP
RXN
Buffer Type
Description
AIO
Transmit/Receive Positive Channel 1
AIO
Transmit/Receive Negative Channel 1
AIO
Transmit/Receive Positive Channel 2
AIO
Transmit/Receive Negative Channel 2
TABLE 2-5:
Num Pins
1
1
1
MISCELLANEOUS PINS
Name
External
Crystal
Input
External
Clock Input
Symbol
XTAL1
CLKIN
External
Crystal Out-
put
External
Reset
XTAL2
nRST
Buffer Type
Description
ICLK
External crystal input
ICLK
OCLK
Single-ended clock oscillator input.
Note:
When using a single ended clock
oscillator, XTAL2 should be left uncon-
nected.
External crystal output
VIS
(PU)
System reset. This signal is active low.
 2013-2015 Microchip Technology Inc.
DS00001987A-page 13