Datasheet

 2009-2016 Microchip Technology Inc. DS00002306A-page 11
LAN9514/LAN9514I
1 USB PLL +1.8V
Power Supply
VDD18USBPLL P Refer to the LAN9514/LAN9514i reference
schematics for additional connection information.
1 Crystal Input XI ICLK External 25 MHz crystal input.
Note: This pin can also be driven by a single-
ended clock oscillator. When this method
is used, XO should be left unconnected
1 Crystal Output XO OCLK External 25 MHz crystal output.
TABLE 2-5: ETHERNET PHY PINS
Num
PINs
Name Symbol
Buffer
Type
Description
1 Ethernet TX
Data Out Nega-
tive
TXN AIO Negative output of the Ethernet transmitter. The
transmit data outputs may be swapped internally
with receive data inputs when Auto-MDIX is
enabled.
1 Ethernet TX
Data Out Posi-
tive
TXP AIO Positive output of the Ethernet transmitter. The
transmit data outputs may be swapped internally
with receive data inputs when Auto-MDIX is
enabled.
1 Ethernet RX
Data In Nega-
tive
RXN AIO Negative input of the Ethernet receiver. The receive
data inputs may be swapped internally with
transmit data outputs when Auto-MDIX is enabled.
1 Ethernet RX
Data In Positive
RXP AIO Positive input of the Ethernet receiver. The receive
data inputs may be swapped internally with
transmit data outputs when Auto-MDIX is enabled.
7 +3.3V Analog
Power Supply
VDD33A P Refer to the LAN9514/LAN9514i reference
schematics for connection information.
1 External PHY
Bias Resistor
EXRES AI Used for the internal bias circuits. Connect to an
external 12.4K 1.0% resistor to ground.
1 Ethernet PLL
+1.8V Power
Supply
VDD18ETHPLL P Refer to the LAN9514/LAN9514i reference
schematics for additional connection information.
TABLE 2-4: USB PINS (CONTINUED)
Num
PINs
Name Symbol
Buffer
Type
Description