lan9215 Standard Microsystems Corp., lan9215 Datasheet - Page 18

• Manufacturer Part Number: lan9215
• Description: Lan9215 16-bit Non-pci 10/100 Ethernet Controller With Hp Auto-mdix Support
• Manufacturer: Standard Microsystems Corp.

Revision 2.3 (08-06-08)
EEPROM Clock,
EEPROM Data,
GPO3, TX_EN,
EEPROM Chip
GPO4 RX_DV,
RX_CLK
TX_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/
SYMBOL
EECS
Table 2.4 Serial EEPROM Interface Signals
BUFFER
TYPE
I/O8
O8
O8
DATASHEET
18
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.
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:
16-bit Non-PCI 10/100 Ethernet Controller with HP Auto-MDIX Support
When the EEPROM interface is not
used, the EECLK pin must be left
unconnected.
DESCRIPTION
SMSC LAN9215
Datasheet