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參數(shù)資料
| 型號(hào)： | CYNSE70064A-83BGC |
| 廠商： | CYPRESS SEMICONDUCTOR CORP |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | Search Engine |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PBGA272 |
| 封裝： | 27 X 27 MM, 2.33 MM HEIGHT, PLASTIC, BGA-272 |
| 文件頁(yè)數(shù)： | 78/127頁(yè) |
| 文件大?。?/td> | 3275K |
| 代理商： | CYNSE70064A-83BGC |
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CYNSE70064A
Document #: 38-02041 Rev. *E
Page 78 of 127
shows the timing diagram for a Search command in the 272-bit-configured table consisting of 31 devices for each of the eight
devices in block number 0.
Figure 10-60
shows the timing diagram for a Search command in the 272-bit-configured table of 31
devices for all devices above the winning device in block number 1.
Figure 10-61
shows the timing diagram for the globally winning
device (the final winner within its own and all blocks) in block number 1.
Figure 10-62
shows the timing diagram for all the devices
below the globally winning device in block number 1.
Figure 10-63
,
Figure 10-64
, and
Figure 10-65
, respectively, show the timing
diagrams of the devices above the globally winning device, the globally winning device, and the devices below the globally winning
device for block number 2.
Figure 10-66
,
Figure 10-67
,
Figure 10-68
, and
Figure 10-69
, respectively, show the timing diagrams
of the device above the globally winning device, the globally winning device, the devices below the globally winning device (except
device 30), and last device (device 30) for block number 3.
The 272-bit Search operation is pipelined and executes as follows. Four cycles from the last cycle of the Search command each
of the devices knows the outcome internal to it for that operation. In the fifth cycle from the Search command, the devices in a
block (which is less than or equal to eight devices resolving the winner within them using an LHI[6:0] and LHO[1:0] signalling
mechanism) arbitrate for a winner. In the sixth cycle after the Search command, the blocks of devices resolve the winning block
through a BHI[2:0] and BHO[2:0] signalling mechanism. The winning device within the winning block is the global winning device
for the Search operation.
Table 10-31. Hit/Miss Assumption
Search Number
1
Block 0
Miss
Block 1
Miss
Block 2
Miss
Block 3
Hit
2
3
Miss
Miss
Hit
Hit
Miss
Hit
Hit
Miss
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