- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄299201 > IDT72V51253L7.5BB (INTEGRATED DEVICE TECHNOLOGY INC) 128K X 18 OTHER FIFO, 4 ns, PBGA256 PDF資料下載
參數(shù)資料
| 型號： | IDT72V51253L7.5BB |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | FIFO |
| 英文描述： | 128K X 18 OTHER FIFO, 4 ns, PBGA256 |
| 封裝： | 17 X 17 MM, 1 MM PITCH, PLASTIC, BGA-256 |
| 文件頁數(shù)： | 14/50頁 |
| 文件大小： | 460K |
| 代理商： | IDT72V51253L7.5BB |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁當(dāng)前第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁
21
IDT72V51233/72V51243/72V51253 3.3V, MULTI-QUEUE FLOW-CONTROL DEVICES
(4 QUEUES) 18 BIT WIDE CONFIGURATION 589,824, 1,179,648 and 2,359,296 bits
COMMERCIALANDINDUSTRIAL
TEMPERATURERANGES
within a queue can be at any point within that queues depth. This location can
be user programmed via the serial port or one of the default values (8 or 128)
can be selected if the user has performed default programming.
As mentioned, every queue within a multi-queue device has its own almost
empty status, when a queue is selected on the read port, this status is output
via the
PAE flag. The PAE flag value for each queue is programmed during
multi-queue device programming (along with the number of queues, queue
depthsandalmostfullvalues).The
PAEoffsetvalue,n,forarespectivequeue
can be programmed to be anywhere between ‘0’ and ‘D’, where ‘D’ is the total
memory depth for that queue. The
PAE value of different queues within the
same device can be different values.
Whenqueueswitchesarebeingmadeonthereadport,the
PAEflagoutput
will switch to the new queue and provide the user with the new queue status,
on the second cycle after a new queue selection is made, on the same RCLK
cyclethatdataactuallyfallsthroughtotheoutputregisterfromthenewqueue.
That is, a new queue can be selected on the read port via the RDADD bus,
RADENenableandarisingedgeofRCLK.OnthesecondrisingedgeofRCLK
followingaqueueselection,thedatawordfromthenewqueuewillbeavailable
at the output register and the
PAEflagoutputwillshowtheemptystatusofthe
newly selected queue. The
PAE is flag output is double register buffered, so
when a read operation occurs at the almost empty boundary causing the
selected queue status to go almost empty the
PAEwillgoLOW2RCLKcycles
after the read. The same is true when a write occurs, there will be a 2 RCLK
cycle delay after the write operation.
So the
PAE flag delays are:
from a read operation to
PAE flag LOW is 2 RCLK + tRAE
The delay from a write operation to
PAEflagHIGHistSKEW2+RCLK+tRAE
Note, if tSKEW is violated there will be one added RCLK cycle delay.
The
PAEflagissynchronoustotheRCLKandalltransitionsofthePAEflag
occur based on a rising edge of RCLK. Internally the multi-queue device
monitorsandkeepsarecordofthealmostemptystatusforallqueues.Itispossible
that the status of a
PAEflagmaybechanginginternallyeventhoughthatflagis
not the active queue flag (selected on the read port). A queue selected on the
writeportmayexperienceachangeofitsinternalalmostemptyflagstatusbased
on write operations. The multi-queue flow-control device also provides a
duplicateofthe
PAEflagonthePAE[3:0]flagbus,thiswillbediscussedindetail
in a later section of the data sheet.
See Figures 20 and 21 for Almost Empty flag timing and queue switching.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| IDT742244CTL | FAST CMOS OCTAL BUFFER/LINE DRIVERS |
| IDT742244CTLB | FAST CMOS OCTAL BUFFER/LINE DRIVERS |
| IDT742244CTP | FAST CMOS OCTAL BUFFER/LINE DRIVERS |
| IDT742244CTPB | FAST CMOS OCTAL BUFFER/LINE DRIVERS |
| IDT742244CTPY | FAST CMOS OCTAL BUFFER/LINE DRIVERS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IDT72V51253L7-5BB8 | 功能描述:IC FLOW CTRL MULTI QUEUE 256-BGA RoHS:否 類別:集成電路 (IC) >> 專用 IC 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 類型:調(diào)幀器 應(yīng)用:數(shù)據(jù)傳輸 安裝類型:表面貼裝 封裝/外殼:400-BBGA 供應(yīng)商設(shè)備封裝:400-PBGA（27x27） 包裝:散裝 |
| IDT72V51253L7-5BBI | 功能描述:IC FLOW CTRL MULTI QUEUE 256-BGA RoHS:否 類別:集成電路 (IC) >> 專用 IC 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 類型:調(diào)幀器 應(yīng)用:數(shù)據(jù)傳輸 安裝類型:表面貼裝 封裝/外殼:400-BBGA 供應(yīng)商設(shè)備封裝:400-PBGA（27x27） 包裝:散裝 |
| IDT72V51256L6BB | 功能描述:IC FLOW CTRL MULTI QUEUE 256-BGA RoHS:否 類別:集成電路 (IC) >> 專用 IC 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 類型:調(diào)幀器 應(yīng)用:數(shù)據(jù)傳輸 安裝類型:表面貼裝 封裝/外殼:400-BBGA 供應(yīng)商設(shè)備封裝:400-PBGA（27x27） 包裝:散裝 |
| IDT72V51256L6BB8 | 功能描述:IC FLOW CTRL MULTI QUEUE 256-BGA RoHS:否 類別:集成電路 (IC) >> 專用 IC 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 類型:調(diào)幀器 應(yīng)用:數(shù)據(jù)傳輸 安裝類型:表面貼裝 封裝/外殼:400-BBGA 供應(yīng)商設(shè)備封裝:400-PBGA（27x27） 包裝:散裝 |
| IDT72V51256L7-5BB | 功能描述:IC FLOW CTRL MULTI QUEUE 256-BGA RoHS:否 類別:集成電路 (IC) >> 專用 IC 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 類型:調(diào)幀器 應(yīng)用:數(shù)據(jù)傳輸 安裝類型:表面貼裝 封裝/外殼:400-BBGA 供應(yīng)商設(shè)備封裝:400-PBGA（27x27） 包裝:散裝 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。