參數(shù)資料
型號(hào): CYNSE70064A-83BGC
廠商: CYPRESS SEMICONDUCTOR CORP
元件分類(lèi): 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): 26/127頁(yè)
文件大小: 3275K
代理商: CYNSE70064A-83BGC
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CYNSE70064A
Document #: 38-02041 Rev. *E
Page 26 of 127
Note
.
All eight devices must be programmed with the same values for TLSZ and HLAT. Only the last device in the table (device
number 7 in this case) must be programmed with LRAM = 1 and LDEV = 1. All other upstream devices (devices 0 through 6 in
this case) must be programmed with LRAM = 0 and LDEV = 0.
Figure 10-9
shows the timing diagram for a Search command in the 68-bit-configured table of eight devices for device number 0.
Figure 10-10
shows the timing diagram for a Search command in the 68-bit-configured table of eight devices for device number 1.
Figure 10-11
shows the timing diagram for a Search command in the 68-bit-configured table of eight devices for device number 7
(the last device in this specific table). For these timing diagrams four 68-bit searches are performed sequentially. Hit/Miss assump-
tions were made as shown below in
Table 10-12
.
Table 10-12. Hit/Miss Assumption
Search Number
1
Device 0
Hit
Miss
Device 1
Miss
Devices 2–6
Miss
Miss
Device 7
Miss
Miss
2
3
4
Hit
Hit
Miss
Hit
Miss
Miss
Miss
Hit
Hit
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