LAN9218-MT-E2 SMSC [SMSC Corporation], LAN9218-MT-E2 Datasheet - Page 16
LAN9218-MT-E2
Manufacturer Part Number
LAN9218-MT-E2
Description
High-Performance Single- Chip 10/100 Ethernet Controller with HP Auto-MDIX
Manufacturer
SMSC [SMSC Corporation]
Datasheet
1.LAN9218-MT-E2.pdf
(130 pages)
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Revision 1.5 (07-18-06)
NO.
NO.
PIN
PIN
67
68
79
78
83
82
87
PHY External Bias
EEPROM Data,
GPO3, TX_EN,
EEPROM Chip
Note: The pin names for the twisted pair pins shown above apply to a normal connection. If HP Auto-
D32/nD16
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.
TX_EN/TX_CLK
Table 2.4 Serial EEPROM Interface Signals
EEDIO/GPO3/
(D32/nD16
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
High-Performance Single-Chip 10/100 Ethernet Controller with HP Auto-MDIX
PINS
NUM
NUM
PINS
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.
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.
DESCRIPTION
DESCRIPTION
SMSC LAN9218
Datasheet
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