LAN9250 datasheet(206/421 Pages) MICROCHIP

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LAN9250

DS00001913A-page 206

 2015 Microchip Technology Inc.

11.15.12 HOST MAC WAKE-UP CONTROL AND STATUS REGISTER (HMAC_WUCSR)

This read/write register contains data and control settings pertaining to the Host MAC’s remote wake-up status and

capabilities. It is used in conjunction with the Host MAC Wake-up Frame Filter Register (HMAC_WUFF) to fully configure

the wake-up frame filter. Refer to Section 11.6.3, "Wake-up Frame Detection," on page 145 for additional information.

Offset:

0Ch

Size:

32 bits

Bits

Description

Type

Default

WFF Pointer Reset (WFF_PTR_RST)

This self-clearing bit resets the Wakeup Frame Filter (WFF) internal read and

write pointers to the beginning of the WFF.

30:10

RESERVED

Global Unicast Enable (GUE)

When set, the Host MAC wakes up from power-saving mode on receipt of a

global unicast frame. This is accomplished by enabling global unicasts as a

wakeup frame qualifier. A global unicast frame has the MAC Address [0] bits

set to 0.

Note:

The Wake-Up Frame Enable (WUEN) bit of this register must also

be set to enable wakeup.

R/W

WoL Wait for Sleep (WOL_WAIT_SLEEP)

When set, the WoL functions are not active until the device has entered a

sleep state. When clear, WoL functions are active immediately.

R/W

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

Remote Wake-Up Frame Received (WUFR)

The Host MAC sets this bit upon receiving a valid Remote Wake-up frame.

R/WC

Magic Packet Received (MPR)

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

R/WC

Broadcast Frame Received (BCAST_FR)

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

R/WC

Perfect DA Wakeup Enable (PFDA_EN)

When set, remote wakeup mode is enabled and the MAC is capable of wak-

ing up on receipt of a frame with a destination address that matches the

physical address of the device. The physical address is stored in the Host

MAC Address High Register (HMAC_ADDRH) and Host MAC Address Low

R/W

Wake-Up Frame Enable (WUEN)

When set, Remote Wake-Up mode is enabled and the Host MAC is capable

of detecting wake-up frames as programmed in the Host MAC Wake-up

Frame Filter Register (HMAC_WUFF).

R/W

Magic Packet Enable (MPEN)

When set, Magic Packet Wake-up mode is enabled.

R/W

Broadcast Wakeup Enable (BCST_EN)

When set, remote wakeup mode is enabled and the MAC is capable of wak-

ing up from a broadcast frame.

R/W

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