參數(shù)資料
型號： M7020R-066ZA1T
廠商： 意法半導(dǎo)體
英文描述： 32K x 68-bit Entry NETWORK SEARCH ENGINE
中文描述： 32K的× 68位進(jìn)入網(wǎng)絡(luò)搜索引擎
文件頁數(shù)： 128/150頁
文件大?。?/td> 996K
代理商： M7020R-066ZA1T
M7020R
128/150
SRAM READ with a Table of Up to Eight Devices
The following explains the SRAM READ operation
completed through a table of up to eight devices
using the following parameters: TLSZ = 01. Figure
94, page 129 diagrams a block of eight devices.
The following assumes that SRAM access is suc-
cessfully achieved through M7020R Device 0. Fig-
ure 95, page 130 and Figure 96, page 131 show
timing diagrams for Device 0 and Device 7, re-
spectively.
–
Cycle 1A:
The host ASIC applies the READ In-
struction on the CMD[1:0] using CMDV = 1. The
DQ Bus supplies the address, with DQ[20:19]
set to '10' to select the SRAM address. The host
ASIC selects the device for which ID[4:0] match-
es the DQ[25:21] lines. During this cycle the
host ASIC also supplies SADR[21:20] on
CMD[8:7].
–
Cycle 1B:
The host ASIC continues to apply the
READ Instruction on the CMD[1:0] using
CMDV = 1. The DQ Bus supplies the address
with DQ[20:19] set to '10' to select the SRAM
address.
–
Cycle 2:
The host ASIC floats DQ[67:0] to a 3-
state condition.
–
Cycle 3:
The host ASIC keeps DQ[67:0] in a 3-
state condition.
–
Cycle 4:
The selected device starts to drive
DQ[67:0].
–
Cycle 5:
The selected device continues to drive
DQ[67:0] and drives ACK from high-Z to low
–
Cycle 6:
The selected device drives the READ
address on SADR[21:0]. It also drives ACK
high, CE_L low, WE_L high, and ALE_L low.
–
Cycle 7:
The selected device drives CE_L,
ALE_L, WE_L, and the DQ Bus in a 3-state con-
dition. It continues to drive ACK low.
At the end of Cycle 7, the selected device floats
ACK in 3-state condition and a new command can
begin.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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/觸點數(shù)量:6 節(jié)距:2 mm 觸點電鍍:Unplated 觸點材料: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/觸點數(shù)量:6 節(jié)距:2 mm 觸點電鍍:Unplated 觸點材料: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:
M7027 功能描述:數(shù)字萬用表 Dual Display Multime 0.3% Accuracy RoHS:否 制造商:Tektronix 產(chǎn)品:Multimeters 類型:Bench 準(zhǔn)確性:0.04 % 電壓范圍:2 V to 2 kV 電阻范圍: 電容范圍: 顯示計數(shù): 頻率:10 Hz to 45 Hz, 850 Hz to 1 MHz 測距: 真均方根值: 數(shù)據(jù)保持:
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