LAN9312-NU Standard Microsystems (SMSC), LAN9312-NU Datasheet - Page 376
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LAN9312-NU
Manufacturer Part Number
LAN9312-NU
Description
Manufacturer
Standard Microsystems (SMSC)
Datasheet
1.LAN9312-NU.pdf
(458 pages)
Specifications of LAN9312-NU
Number Of Primary Switch Ports
2
Operating Supply Voltage (typ)
3.3V
Fiber Support
No
Phy/transceiver Interface
MII
Power Supply Type
Analog
Data Rate (typ)
10/100Mbps
Vlan Support
Yes
Operating Temperature (max)
70C
Operating Temperature (min)
0C
Pin Count
128
Mounting
Surface Mount
Jtag Support
No
Operating Supply Voltage (max)
3.6V
Operating Supply Voltage (min)
3V
Operating Temperature Classification
Commercial
Data Rate
100Mbps
Lead Free Status / RoHS Status
Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LAN9312-NU
Manufacturer:
Microchip Technology
Quantity:
10 000
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Revision 1.7 (06-29-10)
14.5.3.9
31:18
BITS
17:0
RESERVED
Port Default VID and Priority
When the port VID table is selected (PVIDnVLAN=1 of the
VLAN Command Register
the default VID for the port and bits 14:12 specify the default priority. All
other bits of this field are reserved. These bits are used when a packet is
received without a VLAN tag or with a NULL VLAN ID. By default, the VID
and priority for all three ports is 0.
Note:
VLAN Data
When the VLAN table is selected (PVIDnVLAN=0 of the
VLAN Command Register
table entry as follows:
Switch Engine VLAN Write Data Register (SWE_VLAN_WR_DATA)
This register is used write the VLAN or Port VID tables.
BITS
11:0
17
16
15
14
13
12
Values of 0 and FFFh should not be used since they are special
VLAN IDs per the IEEE 802.3Q specification.
Register #:
Member Port 2
Indicates the configuration of Port 2 for this VLAN entry.
1 = Member - Packets with a VID that matches this entry
are allowed on ingress. The port is a member of the
broadcast domain on egress.
0 = Not a Member - Packets with a VID that matches this
entry are filtered on ingress unless the Admit Non Member
bit in the
(SWE_ADMT_N_MEMBER)
not a member of the broadcast domain on egress.
Un-Tag Port 2
When this bit is set, packets received on Port 2 with a VID
that matches this entry will have their tag removed when re-
transmitted by egress ports that are designated as Hybrid
ports via the
(BM_EGRSS_PORT_TYPE).
Member Port 1
See description for Member Port 2.
Un-Tag Port 1
See description for Un-Tag Port 2.
Member Port 0 (Host MAC)
See description for Member Port 2.
Un-Tag Port 0 (Host MAC)
See description for Un-Tag Port 2.
VID
These bits specify the VLAN ID associated with this VLAN
entry.
To disable a VLAN entry, a value of 0 should be used.
Note:
Note:
Switch Engine Admit Non Member Register
A value of 0 is considered a NULL VLAN and
should not normally be used other than to
disable a VLAN entry.
A value of 3FFh is considered reserved by IEEE
802.1Q and should not be used.
Buffer Manager Egress Port Type Register
(SWE_VLAN_CMD)), bits 11:0 of this field specify
(SWE_VLAN_CMD)), the bits form the VLAN
DESCRIPTION
180Ch
DESCRIPTION
High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
is set for this port. The port is
DATASHEET
376
Size:
Switch Engine
Switch Engine
DEFAULT
000h
32 bits
0b
0b
0b
0b
0b
0b
TYPE
R/W
RO
SMSC LAN9312
DEFAULT
Datasheet
0b
-
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