参数资料
型号: KSZ8873FLL
厂商: Micrel Inc
文件页数: 110/115页
文件大小: 0K
描述: IC ETHERNET SW 3PORT 64LQFP
产品培训模块: KSZ8873 Ethernet Switches
特色产品: KSZ8873 Ethernet Switch Controller
标准包装: 160
控制器类型: 以太网开关控制器
接口: MII
电源电压: 1.8V,2.5V,3.3V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 64-LQFP
供应商设备封装: 64-LQFP(10x10)
包装: 托盘
其它名称: 576-3631
KSZ8873FLL-ND
Micrel, Inc.
KSZ8873MLL/FLL/RLL
September 20, 2013
94
Revision 1.6
Dynamic MAC Address Table
The KSZ8873 maintains the dynamic MAC address table. Read access is allowed only.
Table 18. Format of Dynamic MAC Address Table (1K Entries)
Bit
Name
R/W
Description
Default
71
Data Not
Ready
RO
= 1, entry is not ready, continue retrying until this
bit is set to 0
= 0, entry is ready
70-67
Reserved
RO
Reserved
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 1K 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-bit MAC Address
0x0000_0000_0000
Example:
1.
Dynamic MAC Address Table Read (Read the 1
st Entry and Retrieve the MAC Table Size)
Write to reg. 121 (0x79) with 0x18
// Read dynamic table selected
Write to reg. 122 (0x7A) with 0x00
// Trigger the read operation
Then,
Read reg. 123 (0x7B), bit [7]
// if bit 7 = 1, restart (reread)
from this register dynamic table bits [66:64]
Read reg. 124 (0x7C), dynamic table bits [63:56]
Read reg. 125 (0x7D), dynamic table bits [55:48]
Read reg. 126 (0x7E), dynamic table bits [47:40]
Read reg. 127 (0x7F), dynamic table bits [39:32]
Read reg. 128 (0x80), dynamic table bits [31:24]
Read reg. 129 (0x81), dynamic table bits [23:16]
Read reg. 130 (0x82), dynamic table bits [15:8]
Read reg. 131 (0x83), dynamic table bits [7:0]
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