KS8995MAL Micrel Inc, KS8995MAL Datasheet - Page 56

• Manufacturer Part Number: KS8995MAL
• Description: IC SWITCH 10/100 5PORT 128PQFP
• Manufacturer: Micrel Inc

Specifications of KS8995MAL

• Applications: *
• Mounting Type: Surface Mount
• Package / Case: 128-MQFP, 128-PQFP
• For Use With: 576-1017 - BOARD EVAL EXPERIMENT KS8995M
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

KS8995MA
M9999-051305
Dynamic MAC Address
This table is read only. The contents are maintained by the KS8995MA only.
Examples:
(1) Dynamic MAC Address Table Read (read the 1st entry), and retrieve the MAC table size
(2) Dynamic MAC Address Table Read (read the 257th entry), without retrieving # of entries information
Address
Format of Dynamic MAC Address Table (1K entries)
68
67-58
57-56
55
54-52
51-48
47-0
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)
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)
Name
No of Valid Entries
Time Stamp
Source Port
MAC Address
MAC Empty
Data Ready
FID
Table 14. Dynamic MAC Address Table
Description
1, there is no valid entry in the table.
0, there are valid entries in the table.
Indicates how many valid entries in the table.
0x3ff means 1K entries
0x1 means 2 entries
0x0 and bit 68 = 0: means 1 entry
0x0 and bit 68 = 1: means 0 entry
2-bit counters for internal aging
1, The entry is not ready, retry until this bit is set to 0.
0, The entry is ready.
The source port where FID+MAC is learned.
000 port 1
001 port 2
010 port 3
011 port 4
100 port 5
Filter ID.
48-bit MAC address.
56
Mode
RO
RO
RO
RO
RO
RO
RO
Default
1
0
0x0
0x0
0x0
Micrel, Inc.
May 2005