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参数资料
| 型号： | M7020R-066ZA1T |
| 厂商： | 意法半导体 |
| 英文描述： | 32K x 68-bit Entry NETWORK SEARCH ENGINE |
| 中文描述： | 32K的× 68位进入网络搜索引擎 |
| 文件页数： | 26/150页 |
| 文件大小： | 996K |
| 代理商： | M7020R-066ZA1T |
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M7020R
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The Read Burst Address Register (RBURREG)
These READ burst address register fields must be
programmed before burst READ (see Table 12).
The Write Burst Address Register (WBURREG)
These WRITE burst address register fields must
be programmed before burst WRITE (see Table
13).
The NFA Register
Bit [0] of each 68-bit data entry is a special bit des-
ignated for use in the operation of the LEARN
command. In 68-bit quadrants, the bit[0] indicates
whether a location is full (bit set to ’1’) or empty (bit
set to ’0’). Every WRITE/LEARN command loads
the address of first 68-bit location that contains a
'0' in the entry’s bit[0]. This is stored in the NFA
register (see Table 14). If all the bits in a device are
set to '1,' the M7020R asserts FULO[1:0] to '1.'
In 136-bit-configured quadrants, the LSB of this
register is always set to '0.' The host ASIC must
set bit '0' and Bit 68in a 136-bit word to either '0' or
'1' to indicate full/empty status.
Note:
Both bits (0 and 68) must be set to '0' or '1'
(e.g., '10' or '01' settings are invalid).
Table 12. Read Burst Register Description
Table 13. Write Burst Register Description
Table 14. NFA Register
Field
Range
Initial Value
Description
ADR
[14:0]
0
Address.
This is the starting address of the data array or mask array
during a burst READ operation. It automatically increments by 1 for
each successive read of the data array or mask array. Once the
operation is complete, the contents of this field must be reinitialized for
the next operation.
[18:15]
Reserved.
BLEN
[27:19]
0
Length of Burst Access.
The device is capable of writing from 4 up
to 511 locations in a single burst. The BLEN decrements
automatically. Once the operation is complete, the contents of this
field must be reinitialized for the next operation.
[67:28]
Reserved.
Field
Range
Initial Value
Description
ADR
[14:0]
0
Address.
This is the starting address of the data array or mask array
during a burst WRITE operation. It automatically increments by 1 for
each successive write of the data array or mask array. Once the
operation is complete, the contents of this field must be reinitialized for
the next operation.
[18:15]
Reserved.
BLEN
[27:19]
0
Length of Burst Access.
The device is capable of writing from 4 up
to 511 locations in a single burst. The BLEN decrements
automatically. Once the operation is complete, the contents of this field
must be reinitialized for the next operation.
[67:28]
Reserved.
Address
67 - 15
14 - 0
60
Reserved
Index
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相关代理商/技术参数 |
参数描述 |
|---|---|
| M7020R-083ZA1T | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:32K x 68-bit Entry NETWORK SEARCH ENGINE |
| M702-230442 | 功能描述:火线接头 IEEE 1394 SMT 4P HORIZONTAL RoHS:否 制造商:Molex 产品:IEEE 1394 Firewire Connectors 标准:IEEE 1394 位置/触点数量:6 节距:2 mm 触点电镀:Unplated 触点材料:Phosphor Bronze 型式:Female 电流额定值:0.5 A 安装风格:Through Hole 端接类型:Solder Tab 连接器类型:Firewire Receptacle |
| M702-230642 | 功能描述:火线接头 IEEE 1394 SMT 6P HORIZONTAL RoHS:否 制造商:Molex 产品:IEEE 1394 Firewire Connectors 标准:IEEE 1394 位置/触点数量:6 节距:2 mm 触点电镀:Unplated 触点材料:Phosphor Bronze 型式:Female 电流额定值:0.5 A 安装风格:Through Hole 端接类型:Solder Tab 连接器类型:Firewire Receptacle |
| M7023 | 制造商:Tamura Corporation of America 功能描述: |
| M7027 | 功能描述:数字万用表 Dual Display Multime 0.3% Accuracy RoHS:否 制造商:Tektronix 产品:Multimeters 类型:Bench 准确性:0.04 % 电压范围:2 V to 2 kV 电阻范围: 电容范围: 显示计数: 频率:10 Hz to 45 Hz, 850 Hz to 1 MHz 测距: 真均方根值: 数据保持: |
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