LAN9220 datasheet(102/142 Pages) MICROCHIP

102 / 142 page

LAN9220

DS00002417A-page 102

 2006-2017 Microchip Technology Inc.

5.4.11

WUFF—WAKE-UP FRAME FILTER

This register is used to configure the wake up frame filter.

5.4.12

WUCSR—WAKE-UP CONTROL AND STATUS REGISTER

This register contains data pertaining to the MAC’s remote wake-up status and capabilities.

Offset:

Attribute:

Default Value:

00000000h

Size:

32 bits

Bits

Description

31-0

Wake-Up Frame Filter (WFF). Wake-Up Frame Filter (WFF). The Wake-up frame filter is configured

through this register using an indexing mechanism. After hardware reset, or soft reset, the MAC loads

the first value written to this location to the first DWORD in the Wake-up frame filter (filter 0 byte

mask). The second value written to this location is loaded to the second DWORD in the wake-up

frame filter (filter 1 byte mask) and so on. Once all eight DWORDs have been written, the internal

pointer will once again point to the first entry and the filter entries can be modified in the same manner.

Note:

This is a write-only register.

Offset:

Attribute:

R/W

Default Value:

00000000h

Size:

32 bits

Bits

Description

31-10

Reserved

Global Unicast Enable (GUE). When set, the MAC wakes up from power-saving mode on receipt of

a global unicast frame. A global unicast frame has the MAC Address [0] bit set to 0.

8-7

Reserved

Remote Wake-Up Frame Received (WUFR). The MAC, upon receiving a valid Remote Wake-up

frame, sets this bit.

Magic Packet Received (MPR). The MAC, upon receiving a valid Magic Packet, sets this bit.

4-3

Reserved

Wake-Up Frame enabled (WUEN). When set, Remote Wake-Up mode is enabled and the MAC is

capable of detecting wake-up frames as programmed in the wake-up frame filter.

Magic Packet Enable (MPEN). When set, Magic Packet Wake-up mode is enabled.

Reserved

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