KSZ8895MQ_12 MICREL [Micrel Semiconductor], KSZ8895MQ_12 Datasheet - Page 93

• Manufacturer Part Number: KSZ8895MQ_12
• Description: Integrated 5-Port 10/100 Managed Ethernet Switch with MII/RMII interface
• Manufacturer: MICREL [Micrel Semiconductor]

Micrel, Inc.
Dynamic MAC Address Table
This table is read only. The contents are maintained by the KSZ8895MQ/RQ/FMQ only.
Examples:
March 2012
Address
Format of Dynamic MAC Address Table (1K entries)
71
70-61
60-59
58-56
55
54-48
47-0
(1) Dynamic MAC Address Table Read (read the 1
(2) Dynamic MAC Address Table Read (read the 257
Write to Register 110 with 0x18 (read dynamic table selected)
Write to Register 111 with 0x0 (trigger the read operation) and then
Read Register 112 (71-64)
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) and then
Read Register 112 (71-64)
Read Register 113 (63-56)
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)
Name
MAC Empty
No of Valid Entries
Time Stamp
Source Port
Data Ready
FID
MAC Address
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 and bit 71 = 0: means 2 entries
0x0 and bit 71 = 0: means 1 entry
0x0 and bit 71 = 1: means 0 entry
2-bit counters for internal aging
The source port where FID+MAC is learned.
000 Port 1
001 Port 2
010 Port 3
011 Port 4
100 Port 5
1, The entry is not ready, retry until this bit is set to 0.
0, The entry is ready.
Filter ID.
48-bit MAC address.
Table 18. Dynamic MAC Address Table
st
entry), and retrieve the MAC table size
th
entry), without retrieving # of entries information
93
Mode
RO
RO
RO
RO
RO
RO
RO
KSZ8895MQ/RQ/FMQ
M9999-032612-1.5
Default
0x0
0x0
0x0
1
0