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LAN9215I-MT

Highly Efficient Single-Chip 10/100 Ethernet Controller with HP Auto-MDIX and Industrial Temperature Support

SMSC -> Microchip 

Highly Efficient Single-Chip 10/100 Ethernet Controller with HP Auto-MDIX and Industrial Temperature Support

Datasheet

NAME

EEPROM Data,

GPO3, TX_EN,

TX_CLK

EEPROM Chip

Select

EEPROM Clock,

GPO4 RX_DV,

RX_CLK

Table 2.4 Serial EEPROM Interface Signals

SYMBOL

BUFFER

TYPE

EEDIO/GPO3/

I/O8

TX_EN/TX_CLK

EECS

O8

NUM

PINS

1

1

DESCRIPTION

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.

EECLK/GPO4/

O8

RX_DV/RX_CLK

1

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.

SMSC LAN9215i

17

DATASHEET

Revision 1.93 (12-12-07)

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