LAN9217-MT-E2 SMSC [SMSC Corporation], LAN9217-MT-E2 Datasheet - Page 16

• Manufacturer Part Number: LAN9217-MT-E2
• Description: 16-bit High-Performance Single-Chip 10/100 Ethernet Controller with HP Auto-MDIX
• Manufacturer: SMSC [SMSC Corporation]

Revision 1.5 (07-18-06)
NO.
NO.
PIN
PIN
67
68
69
79
78
83
82
87
PHY External Bias
EEPROM Clock,
EEPROM Data,
GPO3, TX_EN,
EEPROM Chip
GPO4 RX_DV,
Note: The pin names for the twisted pair pins shown above apply to a normal connection. If HP Auto-
RX_CLK
TX_CLK
NAME
Resistor
Select
NAME
TPO+
TPO-
TPI+
TPI-
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/
Table 2.4 Serial EEPROM Interface Signals
EEDIO/GPO3/
SYMBOL
EXRES1
SYMBOL
TPO+
TPO-
TPI+
EECS
TPI-
Table 2.3 LAN Interface Signals
DATASHEET
BUFFER
TYPE
BUFFER
AO
AO
AI
AI
AI
TYPE
I/O8
16
O8
O8
16-bit High-Performance Single-Chip 10/100 Ethernet Controller with HP Auto-MDIX
PINS
NUM
NUM
PINS
1
1
1
1
1
1
1
1
Transmit Positive Output (normal)
Receive Positive Input (reversed)
Transmit Negative Output (normal)
Receive Negative Input (reversed)
Receive Positive Input (normal)
Transmit Positive Input (reversed)
Receive Negative Input (normal)
Transmit Negative Output (reversed)
Must be connected to ground through
a 12.4K ohm 1% resistor.
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.
DESCRIPTION
DESCRIPTION
SMSC LAN9217
Datasheet