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KS8993M Datasheet(PDF) 69 Page - Micrel Semiconductor |
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KS8993M Datasheet(HTML) 69 Page - Micrel Semiconductor |
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69 / 85 page 
Micrel, Inc. KS8993M/ML/MI April 2005 69 M9999-041205 Bit Name R/W Description Default 66 MAC empty RO = 1, there is no valid entry in the table = 0, there are valid entries in the table 1 65-56 No of valid entries RO Indicates how many valid entries in the table 0x3ff means 1 K entries 0x001 means 2 entries 0x000 and bit 66 = 0 means 1 entry 0x000 and bit 66 = 1 means 0 entry 00_0000_0000 55-54 Time stamp RO 2 bits counter for internal aging 53-52 Source port RO The source port where FID+MAC is learned 00, port 1 01, port 2 10, port 3 00 51-48 FID RO Filter ID 0x0 47-0 MAC address RO 48 bits MAC address 0x0000_0000_0000 Table 14. Format of Dynamic MAC Address Table (1K Entries) (continued) Example: Dynamic MAC Address Table Read (read the 1 st entry and retrieve the MAC table size) Write to reg. 110 with 0x18 (read dynamic table selected) Write to reg. 111 with 0x00 (trigger the read operation) Then Read reg. 112 (71-64) // if bit 71 = 1, restart (reread) from this register Read reg. 113 (63-56) Read reg. 114 (55-48) Read reg. 115 (47-40) Read reg. 116 (39-32) Read reg. 117 (31-24) Read reg. 118 (23-16) Read reg. 119 (15-8) Read reg. 120 (7-0) MIB (Management Information Base) Counters The KS8993M provides 34 MIB counters per port. These counters are used to monitor the port activity for network management. The MIB counters have two format groups: “Per Port” and “All Port Dropped Packet.” Bit Name R/W Description Default 31 Reserve RO Reserve 0 30 Count valid RO = 1, counter value is valid = 0, counter value is not valid 0 29-0 Counter values RO Counter value 0 Table 15. Format of “Per Port” MIB Counters “Per Port” MIB counters are read using indirect memory access. The base address offsets and address ranges for all three ports are: Port 1, base is 0x00 and range is (0x00-0x1f) Port 2, base is 0x20 and range is (0x20-0x3f) Port 3, base is 0x40 and range is (0x40-0x5f) |
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