IDT72V3654/72V3664/72V3674 3.3V CMOS SyncBiFIFOTM WITH BU" />
參數(shù)資料
型號: IDT72V3674L15PF
廠商: IDT, Integrated Device Technology Inc
文件頁數(shù): 25/37頁
文件大?。?/td> 0K
描述: IC FIFO 16384X36 15NS 128QFP
標(biāo)準(zhǔn)包裝: 36
系列: 72V
功能: 異步
存儲容量: 576K(16K x 36)
數(shù)據(jù)速率: 67MHz
訪問時間: 15ns
電源電壓: 3.15 V ~ 3.45 V
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 128-LQFP
供應(yīng)商設(shè)備封裝: 128-TQFP(14x20)
包裝: 托盤
其它名稱: 72V3674L15PF
31
COMMERCIALTEMPERATURERANGE
IDT72V3654/72V3664/72V3674 3.3V CMOS SyncBiFIFOTM WITH BUS-MATCHING
2,048 x 36 x 2, 4,096 x 36 x 2 and 8,192 x 36 x 2
Figure 25. Timing for
AFA
AFA when FIFO1 is Almost-Full (IDT Standard and FWFT Modes)
Figure 23. Timing for
AEB
AEB when FIFO1 is Almost-Empty (IDT Standard and FWFT Modes)
Figure 24. Timing for
AEA
AEA when FIFO2 is Almost-Empty (IDT Standard and FWFT Modes)
NOTES:
1. tSKEW2 is the minimum time between a rising CLKA edge and a rising CLKB edge for
AEB to transition HIGH in the next CLKB cycle. If the time between the rising CLKA edge and rising
CLKB edge is less than tSKEW2, then
AEB may transition HIGH one CLKB cycle later than shown.
2. FIFO1 Write (
CSA = LOW, W/RA = LOW, MBA = LOW), FIFO1 read (CSB = LOW, W/RB = HIGH, MBB = LOW). Data in the FIFO1 output register has been read from the FIFO.
3. If Port B size is word or byte,
AEB is set LOW by the last word or byte read from FIFO1, respectively.
NOTES:
1. tSKEW2 is the minimum time between a rising CLKA edge and a rising CLKB edge for
AFA to transition HIGH in the next CLKA cycle. If the time between the rising CLKA edge and rising
CLKB edge is less than tSKEW2, then
AFA may transition HIGH one CLKA cycle later than shown.
2. FIFO1 Write (
CSA = LOW, W/RA = HIGH, MBA = LOW), FIFO1 read (CSB = LOW, W/RB = HIGH, MBB = LOW). Data in the FIFO1 output register has been read from the FIFO.
3. D = Maximum FIFO Depth = 2,048 for the IDT72V3654, 4,096 for the IDT72V3664, 8,192 for the IDT72V3674.
4. If Port B size is word or byte, tSKEW2 is referenced to the rising CLKB edge that reads the last word or byte of the long word, respectively.
AEB
CLKA
ENB
4664 drw 25
ENA
CLKB
2
1
tENS2
tENH
tSKEW2
tPAE
tENS2
tENH
X1 Words in FIFO1
(X1+1) Words in FIFO1
(1)
AEA
CLKB
ENA
4664 drw 26
ENB
CLKA
2
1
tENS2
tENH
tSKEW2
tPAE
tENS2
tENH
(X2+1) Words in FIFO2
X2 Words in FIFO2
(1)
AFA
CLKA
ENB
4664 drw 27
ENA
CLKB
12
tSKEW2
tENS2
tENH
tPAF
tENS2
tENH
tPAF
[D-(Y1+1)] Words in FIFO1
(D-Y1) Words in FIFO1
(1)
NOTES:
1. tSKEW2 is the minimum time between a rising CLKB edge and a rising CLKA edge for
AEA to transition HIGH in the next CLKA cycle. If the time between the rising CLKB edge and rising
CLKA edge is less than tSKEW2, then
AEA may transition HIGH one CLKA cycle later than shown.
2. FIFO2 Write (
CSB = LOW, W/RB = LOW, MBB = LOW), FIFO2 read (CSA = LOW, W/RA = LOW, MBA = LOW). Data in the FIFO2 output register has been read from the FIFO.
3. If Port B size is word or byte, tSKEW2 is referenced to the rising CLKB edge that writes the last word or byte of the long word, respectively.
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