SMSC LAN9311 User Manual

Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface

Revision 1.4 (08-19-08)

118

SMSC LAN9311/LAN9311i

 

The Filter i Byte Mask defines which incoming frame bytes Filter i will examine to determine whether
or not this is a wake-up frame. 

, describes the byte mask’s bit fields.

The Filter i command register controls Filter i operation. 

 shows the Filter i command register.

Filter 0 Byte Mask

Filter 1 Byte Mask

Filter 2 Byte Mask

Filter 3 Byte Mask

Reserved

Filter 3 

Command 

Reserved

Filter 2 

Command 

Reserved

Filter 1 

Command 

Reserved

Filter 0 

Command 

Filter 3 Offset

Filter 2 Offset

Filter 1Offset

Filter 0 Offset

Filter 1 CRC-16

Filter 0 CRC-16

Filter 3 CRC-16

Filter 2 CRC-16

31

Must be zero (0)

30:0

 If bit j of the byte mask is set, the CRC machine processes byte number pattern - (offset 

+ j) of the incoming frame. Otherwise, byte pattern - (offset + j) is ignored.

3

Defines the destination address type of the pattern. When bit is set, the pattern 

applies only to multicast frames. When bit is cleared, the pattern applies only to unicast frames.

2:1

0

When bit is set, Filter i is enabled, otherwise, Filter i is disabled.