參數(shù)資料
型號: IDT72825LB15BG
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類: DRAM
英文描述: CMOS DUAL SyncFIFO DUAL 256 x 18, DUAL 512 x 18, DUAL 1,024 x 18, DUAL 2,048 x 18, and DUAL 4,096 x 18
中文描述: 1K X 18 BI-DIRECTIONAL FIFO, 10 ns, PBGA121
封裝: 16 X 16 MM, PLASTIC, BGA-121
文件頁數(shù): 16/26頁
文件大?。?/td> 334K
代理商: IDT72825LB15BG
COMMERCIAL AND INDUSTRIAL
TEMPERATURE RANGES
IDT72805LB/72815LB/72825LB/72835LB/72845LB CMOS Dual SyncFIFO
TM
256 x 18, 512 x 18, 1,024 x 18, 2,048 x 18 and 4,096 x 18
16
Figure 15. Half-Full Flag Timing (IDT Standard and FWFT Modes)
Figure 14. Asynchronous Programmable Almost-Full Flag Timing (IDT Standard and FWFT Modes)
NOTES:
1. m=
PAF
offset.
2. D = maximumFIFO Depth.
In IDT Standard Mode: D = 256 for the IDT72805, 512 for the IDT72815, 1,024 for the IDT72825, 2,048 for the IDT72835 and 4,096 for the IDT72845.
In FWFT Mode:
D = 257 for the IDT72805, 513 for the IDT72815, 1,025 for the IDT72825, 2,049 for the IDT72835 and 4,097 for the IDT72845.
3.
PAF
is asserted to LOW on WCLK transition and reset to HIGH on RCLK transition.
4. Select this mode by setting (
FL
,
RXI
,
WXI
) = (0,0,0), (0,0,1), (0,1,0), (0,1,1) or (1,1,1) during Reset.
NOTES:
1. D = maximumFIFO Depth.
In IDT Standard Mode: D = 256 for the IDT72805, 512 for the IDT72815, 1,024 for the IDT72825, 2,048 for the IDT72835 and 4,096 for the IDT72845.
In FWFT Mode:
D = 257 for the IDT72805, 513 for the IDT72815, 1,025 for the IDT72825, 2,049 for the IDT72835 and 4,097 for the IDT72845.
2. For IDT Standard Mode.
3. For FWFT Mode.
4. Select this mode by setting (
FL
,
RXI
,
WXI
) = (0,0,0), (0,0,1), (0,1,0), (1,0,0), (1,0,1) or (1,1,0) during Reset.
WCLK
t
CLKH
t
CLKL
t
ENS
t
ENH
WEN
PAF
t
ENS
t
PAFA
D - (m + 1) words in FIFO
RCLK
t
PAFA
REN
(1)
3139 drw 14
D - m words in FIFO
D - (m + 1) words in FIFO
WCLK
t
ENS
t
ENH
WEN
HF
t
ENS
t
HF
RCLK
t
HF
REN
3139 drw 15
t
CLKL
t
CLKH
D/2 words in FIFO
(2)
,
[
+ 1
]
words in FIFO
(3)
D/2 + 1 words in FIFO
(2)
,
[
+ 2
]
words in FIFO
(3)
D/2 words in FIFO
(2)
,
[
]
words in FIFO
(3)
D-1
相關PDF資料
PDF描述
IDT72825LB15BGI CMOS DUAL SyncFIFO DUAL 256 x 18, DUAL 512 x 18, DUAL 1,024 x 18, DUAL 2,048 x 18, and DUAL 4,096 x 18
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