LAN9218I_07 SMSC [SMSC Corporation], LAN9218I_07 Datasheet - Page 17

• Manufacturer Part Number: LAN9218I_07
• Description: High-Performance Single-Chip 10/100 Ethernet Controller with HP Auto-MDIX and Industrial Temperature Support
• Manufacturer: SMSC [SMSC Corporation]

High-Performance Single-Chip 10/100 Ethernet Controller with HP Auto-MDIX and Industrial Temperature Support
Datasheet
SMSC
NO.
NO.
PIN
PIN
95
69
6
5
LAN9218i
Crystal 1, Clock In
EEPROM Clock,
GPO4 RX_DV,
Crystal 2
RX_CLK
NAME
NAME
Reset
Table 2.4 Serial EEPROM Interface Signals (continued)
RX_DV/RX_CLK
EECLK/GPO4/
XTAL1/CLKIN
SYMBOL
nRESET
SYMBOL
Table 2.5 System and Power Signals
XTAL2
DATASHEET
BUFFER
BUFFER
TYPE
(PU)
TYPE
Oclk
lclk
17
IS
O8
PINS
NUM
NUM
PINS
1
1
1
1
External 25MHz Crystal Input. This
pin can also be connected to single-
ended TTL oscillator (CLKIN). If this
method is implemented, XTAL2
should be left unconnected.
External 25MHz Crystal output.
Active-low reset input. Resets all logic
and registers within the LAN9218i.
This signal is pulled high with a weak
internal pull-up resistor. If nRESET is
left unconnected, the LAN9218i will
rely on its internal power-on reset
circuitry.
Note:
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.
The LAN9218i must always
be read at least once after
power-up, reset, or upon
return from a power-saving
state or write operations will
not function. See
3.10, "Detailed Reset
Description," on page 39
additional information
DESCRIPTION
DESCRIPTION
Revision 1.8 (06-06-07)
Section
for