参数资料
型号: KS8995M
厂商: Micrel Inc
文件页数: 52/73页
文件大小: 0K
描述: IC SWITCH 10/100 5PORT 128PQFP
标准包装: 66
系列: *
类型: *
应用: *
安装类型: 表面贴装
封装/外壳: 128-BFQFP
供应商设备封装: 128-PQFP(14x20)
包装: 散装
KS8995M
Micrel
M9999-120403
56
December 2003
Address
Name
Description
Mode
Default
Format of Dynamic MAC Address Table (1K entries)
68
MAC empty
1, there is no valid entry in the table.
RO
1
0, there are valid entries in the table.
67-58
No of valid entries
Indicates how many valid entries in the table:
RO
0
0x3ff means 1K entries
0x1 means 2 entries
0x0 and bit 68 = 0: means 1 entry
0x0 and bit 68 = 1: means 0 entry
57-56
Time stamp
2-bit counters for internal aging.
RO
55
Data ready
1, The entry is not ready, retry until this bit is set to 0.
RO
0, The entry is ready.
54-52
Source port
The source port where FID+MAC is learned.
RO
0x0
000 port 1
001 port 2
010 port 3
011 port 4
100 port 5
51-48
FID
Filter ID
RO
0x0
47-0
MAC address
48 bit MAC address
RO
0x0
Table 14. Dynamic MAC Address Table
Examples:
(1) Dynamic MAC Address Table Read (read the 1st entry), and retrieve the MAC table size
Write to reg110 with 0x18 (read dynamic table selected)
Write to reg111 with 0x0 (trigger the read operation )
Then
Read reg112 (68-64)
Read reg113 (63-56) ; // the above two registers show # of entries
Read reg114 (55-48) // if bit 55 is 1, restart(reread) from this register
Read reg115 (47-40)
Read reg116 (39-32)
Read reg117 (31-24)
Read reg118 (23-16)
Read reg119 (15-8)
Read reg120 (7-0)
(2) Dynamic MAC Address Table Read (read the 257th entry), without retrieving # of entries info
Write to reg110 with 0x19 (read dynamic table selected)
Write to reg111 with 0x1 (trigger the read operation)
Then
Read reg114 (55-48) // if bit 55 is 1, restart (reread) from this register
Read reg115 (47-40)
Read reg116 (39-32)
Read reg117 (31-24)
Read reg118 (23-16)
Read reg119 (15-8)
Read reg120 (7-0)
Dynamic MAC Address
This table is ready only. The contents are maintained by KS8995M only.
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