LAN9312-NU SMSC, LAN9312-NU Datasheet - Page 408

• Manufacturer Part Number: LAN9312-NU
• Description: Ethernet ICs Hi Per 2 Port 10/100 Ethernet Switch
• Manufacturer: SMSC
• Type: Two Port Managed Ethernet Switchr

Specifications of LAN9312-NU

• Ethernet Connection Type: 10 Base-T, 100 Base-TX
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Product: Ethernet Switches
• Number Of Transceivers: 1
• Standard Supported: 802.3, 802.3u
• Data Rate: 10 Mbps, 100 Mbps
• Supply Voltage (max): 3.3 V
• Supply Voltage (min): 0 V
• Supply Current (max): 185 mA, 295 mA
• Maximum Operating Temperature: + 70 C
• Package / Case: TQFP-100
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Revision 1.7 (06-29-10)
14.5.3.40
31:15
14:11
BITS
RESERVED
Drop Reason B
When bit 8 is set, these bits indicate the reason a packet was dropped per
the table below:
VALUES
Switch Engine Interrupt Pending Register (SWE_IPR)
This register contains the Switch Engine interrupt status. The status is double buffered. All interrupts
in this register may be masked via the
Refer to
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
BIT
Register #:
Chapter 5, "System Interrupts," on page 49
Admit Only VLAN was set and the packet was untagged or priority tagged.
The destination address was not in the ALR table (unknown or broadcast),
Enable Membership Checking on ingress was set, Admit Non Member was
cleared and the source port was not a member of the incoming VLAN.
The destination address was found in the ALR table but the source port was
not in the forwarding state.
The destination address was found in the ALR table but the destination port
was not in the forwarding state.
The destination address was found in the ALR table but Enable Membership
Checking on ingress was set and the destination port was not a member of the
incoming VLAN.
The destination address was found in the ALR table but the Enable
Membership Checking on ingress was set, Admit Non Member was cleared and
the source port was not a member of the incoming VLAN.
Drop Unknown was set and the destination address was a unicast but not in
the ALR table.
Filter Multicast was set and the destination address was a multicast and not in
the ALR table.
The packet was a broadcast but exceeded the Broadcast Throttling limit.
The destination address was not in the ALR table (unknown or broadcast) and
the source port was not in the forwarding state.
The destination address was found in the ALR table but the source and
destination ports were the same.
The destination address was found in the ALR table and the Filter bit was set
for that address.
RESERVED
RESERVED
A packet was received with a VLAN ID of FFFh
RESERVED
1881h
DESCRIPTION
High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
DESCRIPTION
DATASHEET
Switch Engine Interrupt Mask Register (SWE_IMR)
408
Size:
for more information.
32 bits
TYPE
RO
RC
SMSC LAN9312
DEFAULT
Datasheet
0h
-
register.