lan9217 Standard Microsystems Corp., lan9217 Datasheet - Page 25

• Manufacturer Part Number: lan9217
• Description: Lan9217 16-bit High-performance Single-chip 10/100 Ethernet Controller With Hp Auto-mdix Support
• Manufacturer: Standard Microsystems Corp.

16-bit High-Performance Single-Chip 10/100 Ethernet Controller with HP Auto-MDIX Support
Datasheet
SMSC LAN9217
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 LAN9217 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
Filtering
bits are defined in more detail in the “MAC Control Register”. Please refer to
"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 Function. These
INVFILT
0
0
Table 3.1 Address Filtering Modes
Figure 3.1 VLAN Frame
for more information on this register.
DATASHEET
HO
0
0
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
Table 3.1, "Address
Revision 2.3 (08-06-08)
Section 5.4.1,