LAN9514_12 Datasheet, PDF (14/52 Pages) SMSC Corporation – USB 2.0 Hub and 10/100 Ethernet Controller

USB 2.0 Hub and 10/100 Ethernet Controller
Datasheet
NUM
PINS
1
NAME
Ethernet TX
Data Out
Negative
Ethernet TX
1
Data Out
Positive
Ethernet RX
1
Data In
Negative
Ethernet RX
1 Data In Positive
+3.3V Analog
7
Power Supply
Table 2.5 Ethernet PHY Pins
SYMBOL
TXN
TXP
RXN
RXP
VDD33A
BUFFER
TYPE
DESCRIPTION
AIO Negative output of the Ethernet transmitter. The
transmit data outputs may be swapped internally
with receive data inputs when Auto-MDIX is
enabled.
AIO Positive output of the Ethernet transmitter. The
transmit data outputs may be swapped internally
with receive data inputs when Auto-MDIX is
enabled.
AIO Negative input of the Ethernet receiver. The receive
data inputs may be swapped internally with
transmit data outputs when Auto-MDIX is enabled.
AIO Positive input of the Ethernet receiver. The receive
data inputs may be swapped internally with
transmit data outputs when Auto-MDIX is enabled.
P
Refer to the LAN9514/LAN9514i reference
schematics for connection information.
1
External PHY
Bias Resistor
EXRES
Ethernet PLL
VDD18ETHPLL
1
+1.8V Power
Supply
AI
Used for the internal bias circuits. Connect to an
external 12.4K 1.0% resistor to ground.
P
Refer to the LAN9514/LAN9514i reference
schematics for additional connection information.
NUM
PINS
5
Table 2.6 I/O Power Pins, Core Power Pins, and Ground Pad
NAME
+3.3V I/O
Power
SYMBOL
VDD33IO
BUFFER
TYPE
DESCRIPTION
P
+3.3V Power Supply for I/O Pins.
Refer to the LAN9514/LAN9514i reference
schematics for connection information.
Digital Core
+1.8V Power
Supply Output
2
VDD18CORE
P
+1.8 V power from the internal core voltage
regulator. All VDD18CORE pins must be tied
together for proper operation.
Refer to the LAN9514/LAN9514i reference
schematics for connection information.
1
Note
2.1
Ground
VSS
P
Ground
Note 2.1 Exposed pad on package bottom (Figure 2.1).
Revision 1.2 (02-29-12)
14
DATASHEET
SMSC LAN9514/LAN9514i