LAN9218I-MT Standard Microsystems (SMSC), LAN9218I-MT Datasheet - Page 16

• Manufacturer Part Number: LAN9218I-MT
• Manufacturer: Standard Microsystems (SMSC)

Specifications of LAN9218I-MT

• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 2.97V
• Operating Supply Voltage (max): 3.63V
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 100
• Lead Free Status / RoHS Status: Compliant

Revision 2.7 (03-15-10)
EEPROM Clock,
EEPROM Data,
GPO3, TX_EN,
EEPROM Chip
GPO4 RX_DV,
D32/nD16
TX_CLK,
RX_CLK
NAME
Select
Note: The pin names for the twisted pair pins shown above apply to a normal connection. If HP Auto-
MDIX is enabled and a reverse connection is detected, or a reverse connection is manually
selected, the input pins become outputs, and vice-versa, as indicated in the descriptions.
RX_DV/RX_CLK
TX_EN/TX_CLK
EECLK/GPO4/
EEDIO/GPO3/
(D32/nD16
SYMBOL
EECS
Table 2.4 Serial EEPROM Interface Signals
)
High-Performance Single-Chip 10/100 Ethernet Controller with HP Auto-MDIX and Industrial Temperature Support
BUFFER
TYPE
I/O8
O8
O8
DATASHEET
16
PINS
NUM
1
1
1
EEPROM Data: This bi-directional pin can be
connected to a serial EEPROM DIO. This is
optional.
General Purpose Output 3: This pin can also
function as a general purpose output, or it can
be configured to monitor the TX_EN or
TX_CLK signals on the internal MII port. When
configured as a GPO signal, or as a
TX_EN/TX_CLK monitor, the EECS pin is
deasserted so as to never unintentionally
access the serial EEPROM. This signal cannot
function as a general-purpose input.
Data Bus Width Select: This signal also
functions as a configuration input on power-up
and is used to select the host bus data width.
Upon deassertion of reset, the value of the
input is latched. When high, a 32-bit data bus
is utilized. When low, a 16-bit interface is
utilized.
Serial EEPROM chip select.
EEPROM Clock: Serial EEPROM Clock pin.
General Purpose Output 4: This pin can also
function as a general-purpose output, or it can
be configured to monitor the RX_DV or
RX_CLK signals on the internal MII port. When
configured as a GPO signal, or as an
RX_DV/RX_CLK monitor, the EECS pin is
deasserted so as to never unintentionally
access the serial EEPROM. This signal cannot
function as a general-purpose input.
Note:
When the EEPROM interface is not
used, the EECLK pin must be left
unconnected.
DESCRIPTION
SMSC LAN9218i
Datasheet