lan9313 Standard Microsystems Corp., lan9313 Datasheet - Page 314
lan9313
Manufacturer Part Number
lan9313
Description
Lan9313/lan9313i Three Port 10/100 Managed Ethernet Switch With Mii
Manufacturer
Standard Microsystems Corp.
Datasheet
1.LAN9313.pdf
(398 pages)
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Revision 1.2 (04-08-08)
13.3.3.3
31:25
20:19
BITS
24
23
22
21
RESERVED
Valid
When set, this bit makes the entry valid. It can be cleared to invalidate a
previous entry that contained the specified MAC address.
Age/Override
This bit is used by the aging and forwarding processes.
If the Static bit of this register is cleared, this bit should be set so that the
entry will age in the normal amount of time.
If the Static bit is set, this bit is used as a port state override bit. When set,
packets received with a destination address that matches the MAC address
in the SWE_ALR_WR_DAT_1 and SWE_ALR_WR_DAT_0 registers will be
forwarded regardless of the port state of the ingress or egress port(s). This
is typically used to allow the reception of BPDU packets in the non-
forwarding state.
Static
When this bit is set, this entry will not be removed by the aging process
and/or be changed by the learning process. When this bit is cleared, this
entry will be automatically removed after 5 to 10 minutes of inactivity.
Inactivity is defined as no packets being received with a source address that
matches this MAC address.
Note:
Filter
When set, packets with a destination address that matches this MAC
address will be filtered.
Priority
These bits specify the priority that is used for packets with a destination
address that matches this MAC address. This priority is only used if the
Static bit of this register is set, and the DA Highest Priority (bit 5) in the
Switch Engine Global Ingress Configuration Register
(SWE_GLOBAL_INGRSS_CFG)
Switch Engine ALR Write Data 1 Register (SWE_ALR_WR_DAT_1)
This register is used in conjunction with the
(SWE_ALR_WR_DAT_0)
Entry command in the
This bit is normally set when adding manual entries. It must be
cleared when removing an entry (clearing the Valid bit).
Register #:
Switch Engine ALR Command Register
and contains the last 32 bits of ALR data to be manually written via the Make
1802h
DESCRIPTION
is set.
DATASHEET
314
Size:
Switch Engine ALR Write Data 0 Register
Three Port 10/100 Managed Ethernet Switch with MII
32 bits
(SWE_ALR_CMD).
TYPE
R/W
R/W
R/W
R/W
R/W
SMSC LAN9313/LAN9313i
RO
DEFAULT
00b
Datasheet
0b
0b
0b
0b
-
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