參數(shù)資料
型號(hào)： KSZ8993MLI
廠商： Micrel Inc
文件頁(yè)數(shù)： 68/86頁(yè)
文件大小： 0K
描述： IC SWITCH 10/100 3PORT 128-PQFP
標(biāo)準(zhǔn)包裝： 66
系列： *
產(chǎn)品目錄頁(yè)面： 1081 (CN2011-ZH PDF)
其它名稱： 576-3350
Micrel, Inc.
KSZ8993M/ML
October 2008
70
M9999-020606
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 KSZ8993M 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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