LAN9312-NZW Standard Microsystems (SMSC), LAN9312-NZW Datasheet - Page 423

• Manufacturer Part Number: LAN9312-NZW
• Manufacturer: Standard Microsystems (SMSC)

Specifications of LAN9312-NZW

• Lead Free Status / RoHS Status: Supplier Unconfirmed

High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9312
17:16
15:14
BITS
9:8
7:6
1:0
13
12
11
10
5
4
3
2
Egress Port Type Port 2
These bits set the egress port type which determines the tagging/un-tagging
rules.
RESERVED
Insert Tag Port 1
Identical to Insert Tag Port 2 definition above.
Change VLAN ID Port 1
Identical to Change VLAN ID Port 2 definition above.
Change Priority Port 1
Identical to Change Priority Port 2 definition above.
Change Tag Port 1
Identical to Change Tag Port 2 definition above.
Egress Port Type Port 1
Identical to Egress Port Type Port 2 definition above.
RESERVED
Insert Tag Port 0(Host MAC)
Identical to Insert Tag Port 2 definition above.
Change VLAN ID Port 0(Host MAC)
Identical to Change VLAN ID Port 2 definition above.
Change Priority Port 0(Host MAC)
Identical to Change Priority Port 2 definition above.
Change Tag Port 0(Host MAC)
Identical to Change Tag Port 2 definition above.
Egress Port Type Port 0(Host MAC)
Identical to Egress Port Type Port 2 definition above.
VALUES
BIT
00
01
10
11
Dumb
Packets from regular ports pass untouched. Special tagged packets from the
Host MAC port have their tagged stripped.
Access
Tagged packets (including special tagged packets from the Host MAC port)
have their tagged stripped.
Hybrid
Supports a mix of tagging, un-tagging and changing tags. See
"Adding, Removing, and Changing VLAN Tags," on page 79
details.
CPU
A special tag is added to indicate the source of the packet. See
"Adding, Removing, and Changing VLAN Tags," on page 79
details.
DESCRIPTION
EGRESS PORT TYPE
DATASHEET
423
for additional
for additional
Section 6.5.6,
Section 6.5.6,
TYPE
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
RO
RO
Revision 1.7 (06-29-10)
DEFAULT
0b
0b
0b
0b
0b
0b
0b
0b
0b
0b
0b
-
-