參數(shù)資料
型號(hào)： KS8995MAL
廠商： Micrel Inc
文件頁(yè)數(shù)： 52/73頁(yè)
文件大?。?/td> 0K
描述： IC SWITCH 10/100 5PORT 128PQFP
標(biāo)準(zhǔn)包裝： 66
系列： *
類型： *
應(yīng)用： *
安裝類型： 表面貼裝
封裝/外殼： 128-BFQFP
供應(yīng)商設(shè)備封裝： 128-PQFP（14x20）
包裝： 散裝
配用： 576-1017-ND - BOARD EVAL EXPERIMENT KS8995M
KS8995MA
Micrel, Inc.
M9999-051305
56
May 2005
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 Register 110 with 0x18 (read dynamic table selected)
Write to Register 111 with 0x0 (trigger the read operation )
Then
Read Register 112 (68-64)
Read Register 113 (63-56); // the above two registers show # of entries
Read Register 114 (55-48) // if bit 55 is 1, restart (reread) from this register
Read Register 115 (47-40)
Read Register 116 (39-32)
Read Register 117 (31-24)
Read Register 118 (23-16)
Read Register 119 (15-8)
Read Register 120 (7-0)
(2) Dynamic MAC Address Table Read (read the 257th entry), without retrieving # of entries information
Write to Register 110 with 0x19 (read dynamic table selected)
Write to Register 111 with 0x1 (trigger the read operation)
Then
Read Register 114 (55-48) // if bit 55 is 1, restart (reread) from this register ister
Read Register 115 (47-40)
Read Register 116 (39-32)
Read Register 117 (31-24)
Read Register 118 (23-16)
Read Register 119 (15-8)
Read Register 120 (7-0)
Dynamic MAC Address
This table is read only. The contents are maintained by the KS8995MA only.
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