- Standard Microsystems Single-Chip Ethernet Controller Specification Sheet

Single-Chip Ethernet Controller with HP Auto-MDIX Support and PCI Interface

Datasheet

SMSC LAN9420/LAN9420i 133 Revision 1.22 (09-25-08)

DATASHEET

4.4.12 Wakeup Control and Status Register (WUCSR)

This register contains data pertaining to the MAC’s remote wakeup status and capabilities.

Offset: 00ACh Size: 32 bits

BITS DESCRIPTION TYPE DEFAULT

31:10 RESERVED RO -

9 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 RO -

6 Remote Wakeup Frame Received (WUFR)

The MAC sets this bit upon receiving a valid remote wakeup frame.

R/WC 0b

5 Magic Packet Received (MPR)

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

R/WC 0b

4-3 RESERVED RO -

2 Wakeup Frame Enable (WAKE_EN)

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

detecting wakeup frames as programmed in the Wakeup Frame Filter.

R/W 0b

1 Magic Packet Enable (MPEN)

When set, Magic Packet wakeup mode is enabled.

R/W 0b

0 RESERVED RO -