LAN8740AI-EN datasheet(11/136 Pages) MICROCHIP

11 / 136 page

 2013-2015 Microchip Technology Inc.

DS00001987A-page 11

LAN8740A/LAN8740Ai

TABLE 2-2:

LED PINS

Num Pins

Name

Symbol

Buffer Type

Description

LED 1

LED1

O12

This pin can be used to indicate link activity, link

speed, nINT, or nPME as configured via the LED1

Function Select field of the Wakeup Control and

Status Register (WUCSR).

Note:

Refer to Section 3.8.1, "LEDs" and Sec-

tion 3.8.4, "Wake on LAN (WoL)" for

additional LED information.

Interrupt Out-

put

nINT

O12

Active low interrupt output.

Note:

By default, the nINT signal is output on

the nINT/TXER/TXD4 pin. The nINT

signal can be optionally configured to

output on the LED1 or LED2 pins. Refer

to Section 3.6, "Interrupt Management"

for additional details on device inter-

rupts.

Power Man-

agement Event

Output

nPME

O12

Active low Power Management Event (PME) out-

put.

Note:

The nPME signal can be optionally con-

figured to output on the LED1, LED2, or

RXD2/nPME/nINTSEL pins. Refer to

Section 3.8.4, "Wake on LAN (WoL)" for

additional nPME and WoL information.

Regulator Off

Configuration

Strap

REGOFF

(PD)

This configuration strap is used to disable the inter-

nal 1.2 V regulator. When the regulator is disabled,

external 1.2 V must be supplied to VDDCR.

• When REGOFF is pulled high to VDD2A with

an external resistor, the internal regulator is

disabled.

• When REGOFF is floating or pulled low, the

internal regulator is enabled (default).

See Note 1 for more information on configuration

straps.

Note:

Refer to Section 3.7.4, "REGOFF: Inter-

nal +1.2 V Regulator Configuration" for

additional details.

LAN8740Ai-EN 데이터시트(PDF) 11 Page - Microchip Technology

LAN8740Ai-EN 데이터시트(HTML) 11 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

데이터시트 다운로드

링크 URL