LAN9311-NU SMSC, LAN9311-NU Datasheet - Page 29

• Manufacturer Part Number: LAN9311-NU
• Description: IC ETHER SW 2PRT 16BIT 128-VTQFP
• Manufacturer: SMSC
• Type: Two Port Managed Ethernet Switchr

Specifications of LAN9311-NU

• Controller Type: Ethernet Switch Controller
• Interface: Serial EEPROM
• Voltage - Supply: 3.3V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 128-TQFP, 128-VQFP
• Product: Ethernet Switches
• Number Of Transceivers: 1
• Standard Supported: 802.3, 802.3u
• Data Rate: 10 MB, 100 MB
• Supply Voltage (max): 3.3 V
• Supply Voltage (min): 0 V
• Maximum Operating Temperature: + 70 C
• Ethernet Connection Type: 10 Base-T, 100 Base-TX
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• For Use With: 638-1076 - EVALUATION BOARD LAN9311-NU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 638-1075

Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9311/LAN9311i
114,117
83-86
PIN
127
126
124
123
PIN
119
Note 3.1
Note 3.2
Analog Power
+3.3V Port 1
Ethernet RX
Ethernet RX
Purpose I/O
Ethernet TX
Ethernet TX
Port 2 LED
Reference
Indicators
Negative
Negative
General
Positive
Positive
Supply
NAME
NAME
Port 2
Port 2
Port 2
Port 2
Data
Bias
The pin names for the twisted pair pins apply to a normal connection. If HP Auto-MDIX is
enabled and a reverse connection is detected or manually selected, the RX and TX pins
will be swapped internally.
The pin names for the twisted pair pins apply to a normal connection. If HP Auto-MDIX is
enabled and a reverse connection is detected or manually selected, the RX and TX pins
will be swapped internally.
Table 3.3 LAN Port 1 & 2 Power and Common Pins
nP2LED[3:0]
GPIO[7:4]
VDD33A1
SYMBOL
SYMBOL
EXRES
TXN2
RXN2
RXP2
TXP2
Table 3.2 LAN Port 2 Pins
DATASHEET
BUFFER
BUFFER
IS/O12/
TYPE
OD12
OD12
TYPE
(PU)
AIO
AIO
AIO
AIO
AI
P
29
LED indicators: When configured as LED outputs
via the
these pins are open-drain, active low outputs and
the pull-ups and input buffers are disabled. The
functionality of each pin is determined via the
LED_CFG[9:8] bits.
General Purpose I/O Data: When configured as
GPIO via the
(LED_CFG), these general purpose signals are
fully programmable as either push-pull outputs,
open-drain outputs or Schmitt-triggered inputs by
writing the
Register (GPIO_CFG)
Data & Direction Register
pull-ups are enabled in GPIO mode. The input
buffers are disabled when set as an output.
Note:
Ethernet TX Negative: Negative output of Port 2
Ethernet transmitter. See
information.
Ethernet TX Positive: Positive output of Port 2
Ethernet transmitter. See
information.
Ethernet RX Negative: Negative input of Port 2
Ethernet receiver. See
information.
Ethernet RX Positive: Positive input of Port 2
Ethernet receiver. See
information.
Bias Reference: Used for internal bias circuits.
Connect to an external 12.4K ohm, 1% resistor to
ground.
+3.3V Port 1 Analog Power Supply
Refer to the LAN9311/LAN9311i application note
for additional connection information.
LED Configuration Register
See
on page 163
General Purpose I/O Configuration
LED Configuration Register
Chapter 13, "GPIO/LED Controller,"
DESCRIPTION
DESCRIPTION
for additional details.
and
Note 3.2
Note 3.2
Note 3.2
Note 3.2
(GPIO_DATA_DIR). The
General Purpose I/O
Revision 1.7 (06-29-10)
for additional
for additional
for additional
for additional
(LED_CFG),