參數(shù)資料
型號： 72T3655L5BBGI
廠商： INTEGRATED DEVICE TECHNOLOGY INC
元件分類： FIFO
英文描述： 2K X 36 OTHER FIFO, 3.6 ns, PBGA208
封裝： 17 X 17 MM, 1 MM PITCH, GREEN, PLASTIC, BGA-208
文件頁數(shù)： 9/57頁
文件大?。?/td> 472K
代理商： 72T3655L5BBGI
17
COMMERCIAL AND INDUSTRIAL
TEMPERATURE RANGES
IDT72T3645/55/65/75/85/95/105/115/125 2.5V TeraSync
36-BIT FIFO
1K x 36, 2K x 36, 4K x 36, 8K x 36, 16K x 36, 32K x 36, 64K x 36, 128K x 36 and 256K x 36
FEBRUARY 4, 2009
PROGRAMMING FLAG OFFSETS
FullandEmptyFlagoffsetvaluesareuserprogrammable.TheIDT72T3645/
72T3655/72T3665/72T3675/72T3685/72T3695/72T36105/72T36115/
72T36125haveinternalregistersfortheseoffsets.Thereareeightdefaultoffset
valuesselectableduringMasterReset.TheseoffsetvaluesareshowninTable
2.OffsetvaluescanalsobeprogrammedintotheFIFOinoneoftwoways;serial
or parallel loading method. The selection of the loading method is done using
the
LD (Load) pin. During Master Reset, the state of the LD input determines
whether serial or parallel flag offset programming is enabled. A HIGH on
LD
duringMasterResetselectsserialloadingofoffsetvalues.ALOWon
LDduring
Master Reset selects parallel loading of offset values.
In addition to loading offset values into the FIFO, it is also possible to read
the current offset values. Offset values can be read via the parallel output port
Q0-Qn, regardless of the programming mode selected (serial or parallel). It is
not possible to read the offset values in serial fashion.
Figure3,ProgrammableFlagOffsetProgrammingSequence,summaries
thecontrolpinsandsequenceforbothserialandparallelprogrammingmodes.
For a more detailed description, see discussion that follows.
The offset registers may be programmed (and reprogrammed) any time
after Master Reset, regardless of whether serial or parallel programming has
been selected. Valid programming ranges are from 0 to D-1.
SYNCHRONOUS vs ASYNCHRONOUS PROGRAMMABLE FLAG
TIMING SELECTION
The IDT72T3645/72T3655/72T3665/72T3675/72T3685/72T3695/
72T36105/72T36115/72T36125 can be configured during the Master Reset
cycle with either synchronous or asynchronous timing for
PAFand PAEflags
by use of the PFM pin.
If synchronous
PAF/PAE configuration is selected (PFM, HIGH during
MRS),thePAFisassertedandupdatedontherisingedgeofWCLKonlyand
not RCLK. Similarly,
PAEisassertedandupdatedontherisingedgeofRCLK
onlyandnotWCLK.Fordetailtimingdiagrams,seeFigure23forsynchronous
PAF timing and Figure 24 for synchronous PAE timing.
If asynchronous
PAF/PAE configuration is selected (PFM, LOW during
MRS),thePAFisassertedLOWontheLOW-to-HIGHtransitionofWCLKand
PAFisresettoHIGHontheLOW-to-HIGHtransitionofRCLK. Similarly,PAE
isassertedLOWontheLOW-to-HIGHtransitionofRCLK.
PAEisresettoHIGH
on the LOW-to-HIGH transition of WCLK. For detail timing diagrams, see
Figure 25 for asynchronous
PAFtimingandFigure26forasynchronousPAE
timing.
IDT72T3645, 72T3655
*
LD
FSEL1
FSEL0
Offsets n,m
LH
L
511
L
H
255
L
127
LH
H
63
HL
L
31
HH
L
15
HL
H
7
HH
H
3
*
LD
FSEL1
FSEL0
Program Mode
H
X
Serial(3)
L
X
Parallel(4)
IDT72T3665,72T3675,72T3685,72T3695, 72T36105,
72T36115, 72T36125
*
LD
FSEL1
FSEL0
Offsets n,m
H
L
1,023
LH
L
511
L
H
255
L
127
LH
H
63
HH
L
31
HL
H
15
HH
H
7
*
LD
FSEL1
FSEL0
Program Mode
H
X
Serial(3)
L
X
Parallel(4)
*THIS PIN MUST BE HIGH AFTER MASTER RESET TO WRITE
OR READ DATA TO/FROM THE FIFO MEMORY.
TABLE 2 — DEFAULT PROGRAMMABLE
FLAG OFFSETS
NOTES:
1. n = empty offset for
PAE.
2. m = full offset for
PAF.
3. As well as selecting serial programming mode, one of the default values will also
be loaded depending on the state of FSEL0 & FSEL1.
4. As well as selecting parallel programming mode, one of the default values will
also be loaded depending on the state of FSEL0 & FSEL1.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
72T3655L5BBI 功能描述:IC FIFO 2048X36 5NS 208-BGA 制造商:idt, integrated device technology inc 系列:72T 包裝:托盤 零件狀態(tài):過期 存儲容量:72K（2K x 36） 功能:異步，同步 數(shù)據(jù)速率:83MHz，200MHz 訪問時間:10ns，3.6ns 電壓 - 電源:2.375 V ~ 2.625 V 電流 - 電源（最大值）:70mA 總線方向:單向 擴充類型:深度，寬度 可編程標(biāo)志支持:是 中繼能力:是 FWFT 支持:是 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:208-BGA 供應(yīng)商器件封裝:208-PBGA（17x17） 標(biāo)準(zhǔn)包裝:15
72T3655L6-7BB 功能描述:IC FIFO 2048X36 6-7NS 208-BGA 制造商:idt, integrated device technology inc 系列:72T 包裝:托盤 零件狀態(tài):過期 存儲容量:72K（2K x 36） 功能:異步，同步 數(shù)據(jù)速率:66MHz，150MHz 訪問時間:12ns，3.8ns 電壓 - 電源:2.375 V ~ 2.625 V 電流 - 電源（最大值）:70mA 總線方向:單向 擴充類型:深度，寬度 可編程標(biāo)志支持:是 中繼能力:是 FWFT 支持:是 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:208-BGA 供應(yīng)商器件封裝:208-PBGA（17x17） 標(biāo)準(zhǔn)包裝:15
72T3665L4-4BB 功能描述:先進先出 RoHS:否 制造商:IDT 電路數(shù)量: 數(shù)據(jù)總線寬度:18 bit 總線定向:Unidirectional 存儲容量:4 Mbit 定時類型:Synchronous 組織:256 K x 18 最大時鐘頻率:100 MHz 訪問時間:10 ns 電源電壓-最大:3.6 V 電源電壓-最小:6 V 最大工作電流:35 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-80 封裝:
72T3665L4-4BBG 功能描述:先進先出 RoHS:否 制造商:IDT 電路數(shù)量: 數(shù)據(jù)總線寬度:18 bit 總線定向:Unidirectional 存儲容量:4 Mbit 定時類型:Synchronous 組織:256 K x 18 最大時鐘頻率:100 MHz 訪問時間:10 ns 電源電壓-最大:3.6 V 電源電壓-最小:6 V 最大工作電流:35 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-80 封裝:
72T3665L5BB 功能描述:先進先出 RoHS:否 制造商:IDT 電路數(shù)量: 數(shù)據(jù)總線寬度:18 bit 總線定向:Unidirectional 存儲容量:4 Mbit 定時類型:Synchronous 組織:256 K x 18 最大時鐘頻率:100 MHz 訪問時間:10 ns 電源電壓-最大:3.6 V 電源電壓-最小:6 V 最大工作電流:35 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-80 封裝:
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