- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄359091 > M7020R-050ZA1T (意法半導(dǎo)體) CAP TANT 22UF 10V 20% POLY SMD PDF資料下載
參數(shù)資料
| 型號(hào)： | M7020R-050ZA1T |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | CAP TANT 22UF 10V 20% POLY SMD |
| 中文描述： | 32K的× 68位進(jìn)入網(wǎng)絡(luò)搜索引擎 |
| 文件頁(yè)數(shù)： | 73/150頁(yè) |
| 文件大?。?/td> | 996K |
| 代理商： | M7020R-050ZA1T |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)當(dāng)前第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)第118頁(yè)第119頁(yè)第120頁(yè)第121頁(yè)第122頁(yè)第123頁(yè)第124頁(yè)第125頁(yè)第126頁(yè)第127頁(yè)第128頁(yè)第129頁(yè)第130頁(yè)第131頁(yè)第132頁(yè)第133頁(yè)第134頁(yè)第135頁(yè)第136頁(yè)第137頁(yè)第138頁(yè)第139頁(yè)第140頁(yè)第141頁(yè)第142頁(yè)第143頁(yè)第144頁(yè)第145頁(yè)第146頁(yè)第147頁(yè)第148頁(yè)第149頁(yè)第150頁(yè)
73/150
M7020R
The following is the sequence of operation for a
single 136-bit SEARCH command (see COM-
MAND CODES AND PARAMETERS, page 29).
–
Cycle A:
The host ASIC drives the CMDV high
and applies SEARCH command code ('10') on
CMD[1:0] signals. CMD[5:3] signals must be
driven with the index to the GMR pair for use in
this SEARCH operation. CMD[8:7] signals must
be driven with the bits that will be driven on
SADR[21:20] by this device if it has a hit.
DQ[67:0] must be driven with the 68-bit data
([135:68]) in order to be compared against all
even locations. The CMD[2] signal must be driv-
en to logic '0.'
–
Cycle B:
The host ASIC continues to drive the
CMDV high and to apply SEARCH command
code ('10') on CMD[1:0]. CMD[5:2] must be driv-
en by the index of the comparand register pair
for storing the 136-bit word presented on the DQ
Bus during Cycles A and B. CMD[8:6] signals
must be driven with the index of the SSR that
will be used for storing the address of the
matching entry and the Hit Flag (see SEARCH-
Successful Registers (SSR[0:7]), page 23). The
DQ[67:0] is driven with 68-bit data ([67:0]) to be
compared against all odd locations.
The logical 136-bit SEARCH operation is as
shown in Figure 51, page 76. The entire table of 31
devices (consisting of 136-bit entries) is compared
against a 136-bit word K that is presented on the
DQ Bus in Cycles A and B of the command using
the GMR and local mask bits. The GMR is the 136-
bit word specified by the even and odd global
mask pair selected by the GMR Index in the com-
mand’s Cycle A.
The 136-bit word K that is presented on the DQ
Bus in Cycles A and B of the command is also
stored in the even and odd comparand registers
specified by the Comparand Register Index in the
command’s Cycle B. In x136 configurations, the
even and odd comparand registers can subse-
quently be used by the LEARN command in only
the first non-full device.
Note:
The LEARN command is supported for only
one of the blocks consisting of up to eight devices
in a depth-cascaded table of more than one block.
The word K that is presented on the DQ Bus in Cy-
cles A and B of the command is compared with
each entry in the table starting at location “0.” The
first matching entry’s location address, “L,” is the
winning address that is driven as part of the SRAM
address on the SADR[21:0] lines (see SRAM AD-
DRESSING, page 126). The global winning device
will drive the bus in a specific cycle. On global miss
cycles the device with LRAM = 1 (the default driv-
ing device for the SRAM bus) and LDEV = 1 (the
default driving device for SSF and SSV signals)
will be the default driver for such missed cycles.
Note:
During 136-bit searches of 136-bit-config-
ured tables, the search hit will always be at an
even address.
The SEARCH command is a pipelined operation.
It executes a search at half the rate of the frequen-
cy of CLK2X for 136-bit searches in x136-config-
ured tables. The latency of SADR, CE_L, ALE_L,
WE_L, SSV, and SSF from the 136-bit SEARCH
command cycle (two CLK2X cycles) is shown in
Table 39, page 88.
The latency of a search from command to the
SRAM access cycle is 6 for 1–31 devices in the ta-
ble and where TLSZ = 10. In addition, SSV and
SSF shift further to the right for different values of
HLAT, as specified in Table 40, page 88.
The 136-bit SEARCH operation is pipelined and
executes as follows:
– Four cycles from the SEARCH command, each
of the devices knows the outcome internal to it
for that operation.
– In the fifth cycle after the SEARCH command,
the devices in a block (being less than or equal
to eight devices resolving the winner within
them using the LHI[6:0] and LHO[1:0] signalling
mechanism) arbitrate for a winner amongst
them.
– In the sixth cycle after the SEARCH command,
the blocks (of devices) resolve the winning block
through the BHI[2:0] and BHO[2:0] signalling
mechanism. The winning device in the winning
block is the global winning device for a
SEARCH operation.
Table 38. Hit/Miss Assumption
Search Number
1
2
3
4
Block 0
Miss
Miss
Miss
Miss
Block 1
Miss
Miss
Hit
Miss
Block 2
Miss
Hit
Hit
Miss
Block 3
Hit
Hit
Miss
Miss
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M7020R-066ZA1T | 32K x 68-bit Entry NETWORK SEARCH ENGINE |
| M7020R-083ZA1T | 32K x 68-bit Entry NETWORK SEARCH ENGINE |
| M7020R | 32K x 68-bit Entry NETWORK SEARCH ENGINE |
| M72DW64000B | 64Mbit (x8/ x16, Multiple Bank, Boot Block) Flash Memory and 16Mbit Pseudo SRAM, 3V Supply, Multiple Memory Product |
| M72DW64000B70ZT | 64Mbit (x8/ x16, Multiple Bank, Boot Block) Flash Memory and 16Mbit Pseudo SRAM, 3V Supply, Multiple Memory Product |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M7020R-066ZA1T | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:32K x 68-bit Entry NETWORK SEARCH ENGINE |
| M7020R-083ZA1T | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:32K x 68-bit Entry NETWORK SEARCH ENGINE |
| M702-230442 | 功能描述:火線接頭 IEEE 1394 SMT 4P HORIZONTAL RoHS:否 制造商:Molex 產(chǎn)品:IEEE 1394 Firewire Connectors 標(biāo)準(zhǔn):IEEE 1394 位置/觸點(diǎn)數(shù)量:6 節(jié)距:2 mm 觸點(diǎn)電鍍:Unplated 觸點(diǎn)材料:Phosphor Bronze 型式:Female 電流額定值:0.5 A 安裝風(fēng)格:Through Hole 端接類型:Solder Tab 連接器類型:Firewire Receptacle |
| M702-230642 | 功能描述:火線接頭 IEEE 1394 SMT 6P HORIZONTAL RoHS:否 制造商:Molex 產(chǎn)品:IEEE 1394 Firewire Connectors 標(biāo)準(zhǔn):IEEE 1394 位置/觸點(diǎn)數(shù)量:6 節(jié)距:2 mm 觸點(diǎn)電鍍:Unplated 觸點(diǎn)材料:Phosphor Bronze 型式:Female 電流額定值:0.5 A 安裝風(fēng)格:Through Hole 端接類型:Solder Tab 連接器類型:Firewire Receptacle |
| M7023 | 制造商:Tamura Corporation of America 功能描述: |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。