LAN89218AQ Standard Microsystems (SMSC), LAN89218AQ Datasheet - Page 27

• Manufacturer Part Number: LAN89218AQ
• Manufacturer: Standard Microsystems (SMSC)

Specifications of LAN89218AQ

• Lead Free Status / RoHS Status: Compliant

High Performance Single-Chip 10/100 Ethernet Controller for Automotive Applications
Datasheet
SMSC LAN89218
3.3
MCPAS
X
0
0
0
0
1
1
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 LAN89218 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
0
0
1
0
0
Modes", which shows the various filtering modes used by the Ethernet MAC
INVFILT
0
0
0
1
0
0
0
Table 3.1 Address Filtering Modes
DATASHEET
HO
X
0
0
1
0
0
1
for more information on this register.
27
HPFILT
X
X
0
1
1
0
1
MAC address perfect filtering only
for all addresses.
MAC address perfect filtering for
physical address and hash filtering
for multicast addresses
Hash Filtering for physical and
multicast addresses
Inverse Filtering
Promiscuous
Pass all multicast frames. Frames
with physical addresses are
perfect-filtered
Pass all multicast frames. Frames
with physical addresses are hash-
filtered
DESCRIPTION
Revision 1.3 (02-23-10)
Table 3.1,
Section