LAN9514 datasheet(11/54 Pages) MICROCHIP

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 2009-2016 Microchip Technology Inc.

DS00002306A-page 11

LAN9514/LAN9514I

USB PLL +1.8V

Power Supply

VDD18USBPLL

Refer to the LAN9514/LAN9514i reference

schematics for additional connection information.

Crystal Input

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

Crystal Output

OCLK

External 25 MHz crystal output.

TABLE 2-5:

ETHERNET PHY PINS

Num

PINs

Name

Symbol

Buffer

Type

Description

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.

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.

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.

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.

+3.3V Analog

Power Supply

VDD33A

Refer to the LAN9514/LAN9514i reference

schematics for connection information.

External PHY

Bias Resistor

EXRES

Used for the internal bias circuits. Connect to an

external 12.4K 1.0% resistor to ground.

Ethernet PLL

+1.8V Power

Supply

VDD18ETHPLL

Refer to the LAN9514/LAN9514i reference

schematics for additional connection information.

TABLE 2-4:

USB PINS (CONTINUED)

Num

PINs

Name

Symbol

Buffer

Type

Description

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