lan9312 Standard Microsystems Corp., lan9312 Datasheet - Page 410
lan9312
Manufacturer Part Number
lan9312
Description
Lan9312 High Performance Two Port 10/100 Managed Ethernet Switch With 32-bit Non-pci Cpu Interface
Manufacturer
Standard Microsystems Corp.
Datasheet
1.LAN9312.pdf
(458 pages)
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Revision 1.2 (04-08-08)
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
DATASHEET
DESCRIPTION
Switch Engine Interrupt Mask Register (SWE_IMR)
410
Size:
for more information.
32 bits
TYPE
RO
RC
SMSC LAN9312
DEFAULT
Datasheet
0h
-
register.
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