LAN8742AI-CZ datasheet(12/124 Pages) MICROCHIP

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LAN8742A/LAN8742Ai

DS00001989A-page 12

 2013-2015 Microchip Technology Inc.

Interrupt Out-

put

nINT

VOD8

(PU)

Active low interrupt output. Place an external

resistor pull-up to VDDIO.

Note:

The nINT signal can be optionally con-

figured to output on the LED1 or LED2

pins. Refer to Section 3.6, "Interrupt

Management" for additional details on

device interrupts.

Note:

Refer to Section 3.8.1.6, "nINTSEL

and LED2 Polarity Selection" for

details on how the nINTSEL configura-

tion strap is used to determine the

function of this pin.

Reference

Clock Output

REFCLKO

VO8

This optional 50 MHz clock output is derived from

the 25 MHz crystal oscillator. REFCLKO is select-

able via the nINTSEL configuration strap.

Note:

Refer to Section 3.7.4.2, "REF_CLK

Out Mode" for additional details on

device interrupts.

Note:

Refer to Section 3.8.1.6, "nINTSEL

and LED2 Polarity Selection" for

details on how the nINTSEL configura-

tion strap is used to determine the

function of this pin.

TABLE 2-6:

ANALOG REFERENCE PINS

Num Pins

Name

Symbol

Buffer Type

Description

External 1%

Bias Resistor

Input

RBIAS

This pin requires connection of a 12.1 kΩ (1%)

resistor to ground.

Refer to the LAN8742A/LAN8742Ai reference

schematic for connection information.

Note:

The nominal voltage is 1.2 V and the

resistor will dissipate approximately

1 mW of power.

TABLE 2-5:

MISCELLANEOUS PINS (CONTINUED)

Num Pins

Name

Symbol

Buffer Type

Description

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