LAN8740 datasheet(90/136 Pages) MICROCHIP

90 / 136 page

LAN8740A/LAN8740Ai

DS00001987A-page 90

 2013-2015 Microchip Technology Inc.

4.3.7

WAKEUP CONTROL AND STATUS REGISTER (WUCSR)

Index (In Decimal):

3.32784

Size:

16 bits

Bits

Description

Type

Default

Interface Disable

0 = MII/RMII interface enabled

1 = MII/RMII interface disabled. Outputs driven to a low level and inputs

ignored.

R/W

NASR

14:13

LED1 Function Select

00 = LED1 functions as Link/Activity.

01 = LED1 functions as nINT.

10 = LED1 functions as nPME.

11 = LED1 functions as Link Speed.

Note:

Refer to Section 3.8.1, "LEDs" for additional information.

R/W

NASR

12:11

LED2 Function Select

00 = LED2 functions as Link Speed.

01 = LED2 functions as nINT.

10 = LED2 functions as nPME.

11 = LED2 functions as Link/Activity.

Note:

Refer to Section 3.8.1, "LEDs" for additional information.

R/W

NASR

RXD2/RMIISEL Function Select

0 = RXD2/RMIISEL pin functions normally as RXD2/RMIISEL.

1 = RXD2/RMIISEL pin functions as nPME.

Note:

Refer to Section 3.8.4, "Wake on LAN (WoL)" for additional infor-

mation.

R/W

NASR

nPME Self Clear

0 = nPME pin is not self clearing.

1 = nPME pin is self clearing.

Note:

When set, the de-assertion delay of the nPME signal is controlled

by the nPME Assert Delay bit of the Miscellaneous Configuration

for additional information.

R/W

NASR

WoL Configured

This bit may be set by software after the WoL registers are configured. This

sticky bit (and all other WoL related register bits) is reset only via a power

cycle or a pin reset, allowing software to skip programming of the WoL regis-

ters in response to a WoL event.

Note:

Refer to Section 3.8.4, "Wake on LAN (WoL)" for additional infor-

mation.

R/W/

NASR

Perfect DA Frame Received (PFDA_FR)

The MAC sets this bit upon receiving a valid frame with a destination address

that matches the physical address.

R/WC/

NASR

Remote Wakeup Frame Received (WUFR)

The MAC sets this bit upon receiving a valid remote Wakeup Frame.

R/WC/

NASR

Magic Packet Received (MPR)

The MAC sets this bit upon receiving a valid Magic Packet.

R/WC/

NASR

Broadcast Frame Received (BCAST_FR)

The MAC Sets this bit upon receiving a valid broadcast frame.

R/WC/

NASR

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