LAN9353 Datasheet, PDF (294/523 Pages) Microchip Technology – Interfaces at up to 200Mbps via Turbo MII

LAN9353
10.7.3.7 Switch Engine ALR Configuration Register (SWE_ALR_CFG)
Register #:
1809h
Size:
32 bits
This register controls the ALR aging timer duration and the allowance of Broadcast entries.
Bits
Description
31:28
27:16
RESERVED
Aging Time
This field sets the minimum time to age MAC Addresses from the ALR table.
The time is specified in 1 second increments plus 1 second. A value of 0 is 1
second, a value of 1 is 2 seconds, etc. The maximum value of FFFh is
approximately 69 minutes. The default sets a minimum time of 300 seconds.
15:3 RESERVED
2
Allow Broadcast Entries
When set, this bit allows the use of the Broadcast MAC address in the ALR
table.
1
ALR Age Enable
When set, this bit enables the aging process.
0
ALR Age Test
When set, this bit changes the aging timer from seconds to milliseconds.
Type
RO
R/W
RO
R/W
R/W
R/W
Default
-
129h
-
0b
1b
0b
DS00001925A-page 294
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