參數(shù)資料
型號: M7040N
廠商: 意法半導體
英文描述: 64K x 72-bit Entry NETWORK PACKET SEARCH ENGINE
中文描述: 64K的× 72位的網(wǎng)絡數(shù)據(jù)包進入搜索引擎
文件頁數(shù): 26/159頁
文件大?。?/td> 1088K
代理商: M7040N
M7040N
26/159
The Information Register
Table 12. Information Register Field Descriptions
LRAM
[8]
0
Last device on this SRAM Bus.
When set, this device is the last device on this
SRAM bus in the depth-cascaded table and is the default driver for the SADR, CE_L,
WE_L, and ALE_L signals. In cycles where no M7040N device in a depth-cascaded
table drives these signals, this device drives the signals as follows:
SADR = FFFFFF,
CE_L = 1
WE_L = 1
ALE_L = 1
OE_L is always driven by the device for which this bit is set.
CFG
[24:9]
0000
0000
0000
0000
Database Configuration.
The device is internally divided into eight quadrants of 8K x
72, each of which can be configured as 8K x 72, 4K x 144, or 2K x 288 as follows:
00: 8K x 72
01: 4K x 144
10: 2K x 288
11: low power, partition not used for SEARCH
Bits [10:9] apply to configuring the 1st quadrant in the address space.
Bits [12:11] apply to configuring the 2nd quadrant in the address space.
Bits [14:13] apply to configuring the 3rd quadrant in the address space.
Bits [16:15] apply to configuring the 4th quadrant in the address space.
Bits [18:17] apply to configuring the 5th quadrant in the address space.
Bits [20:19] apply to configuring the 6th quadrant in the address space.
Bits [22:21] apply to configuring the 7th quadrant in the address space.
Bits [24:23] apply to configuring the 8th quadrant in the address space.
[71:25]
0
Reserved.
Field
Range
Initial
Value
Description
Field
Range
Initial Value
Description
Revision
[3:0]
0001
Revision Number.
This is the current device revision
number. Numbers start from one and increment by one
for each revision of the device.
Implementation
[6:4]
001
This is the M7040N implementation number.
Reserved
[7]
0
Reserved.
Device ID
[15:8]
00000100
This is the Device Identification Number.
MFID
[31:16]
0000_0010_0000_1111
Manufacturer ID.
This field is the same as the
manufacturer ID and continuation bits in the TAP
controller.
[71:32]
Reserved.
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