LAN9221i SMSC [SMSC Corporation], LAN9221i Datasheet - Page 25
LAN9221i
Manufacturer Part Number
LAN9221i
Description
High-Performance 16-bit Non-PCI 10/100 Ethernet Controller with Variable Voltage I/O
Manufacturer
SMSC [SMSC Corporation]
Datasheet
1.LAN9221I.pdf
(151 pages)
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High-Performance 16-bit Non-PCI 10/100 Ethernet Controller with Variable Voltage I/O
Datasheet
SMSC LAN9221/LAN9221i
3.3
MCPAS
0
0
The Ethernet address fields of an Ethernet Packet, consists of two 6-byte fields: one for the destination
address and one for the source address. The first bit of the destination address signifies whether it is
a physical address or a multicast address.
The LAN9221/LAN9221i address check logic filters the frame based on the Ethernet receive filter mode
that has been enabled. Filter modes are specified based on the state of the control bits in
"Address Filtering
Function. These bits are defined in more detail in the “MAC Control Register”. Please refer to
5.4.1, "MAC_CR—MAC Control Register"
If the frame fails the filter, the Ethernet MAC function does not receive the packet. The host has the
option of accepting or ignoring the packet.
Address Filtering Functional Description
PRMS
0
0
Modes", which shows the various filtering modes used by the Ethernet MAC
INVFILT
0
0
Table 3.1 Address Filtering Modes
Figure 3.1 VLAN Frame
DATASHEET
HO
0
0
for more information on this register.
25
HPFILT
0
1
MAC address perfect filtering only
for all addresses.
MAC address perfect filtering for
physical address and hash filtering
for multicast addresses
DESCRIPTION
Revision 2.6 (12-04-08)
Table 3.1,
Section
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