LAN9118MT Standard Microsystems (SMSC), LAN9118MT Datasheet - Page 20

• Manufacturer Part Number: LAN9118MT
• Manufacturer: Standard Microsystems (SMSC)

Revision 1.0 (03-17-05)
NO.
PIN
67
68
69
EEPROM Clock,
EEPROM Data,
GPO3, TX_EN,
EEPROM Chip
GPO4 RX_DV,
D32/nD16
TX_CLK,
RX_CLK
NAME
Select
Table 2.4 Serial EEPROM Interface Signals
RX_DV/RX_CLK
TX_EN/TX_CLK
EECLK/GPO4/
EEDIO/GPO3/
(D32/nD16
SYMBOL
nEECS
)
DATASHEET
BUFFER
TYPE
I/O8
20
High-Performance Single-Chip 10/100 Non-PCI Ethernet Controller
O8
O8
NUM
PINS
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.
DESCRIPTION
SMSC LAN9118
Datasheet