IDT72T1845/55/65/75/85/95/105/115/125 2.5V TeraSync 18-BIT/9-BIT FIFO
參數(shù)資料
型號: IDT72T18125L4-4BB
廠商: IDT, Integrated Device Technology Inc
文件頁數(shù): 41/55頁
文件大小: 0K
描述: IC FIFO 524X18 2.5V 4NS 240BGA
標準包裝: 1
系列: 72T
功能: 異步,同步
存儲容量: 9M(512K x 18)
數(shù)據(jù)速率: 10MHz
訪問時間: 3.4ns
電源電壓: 2.375 V ~ 2.625 V
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 240-BGA
供應商設備封裝: 240-PBGA(19x19)
包裝: 托盤
其它名稱: 72T18125L4-4BB
46
COMMERCIALANDINDUSTRIAL
TEMPERATURERANGES
IDT72T1845/55/65/75/85/95/105/115/125 2.5V TeraSync 18-BIT/9-BIT FIFO 2Kx18/4Kx9, 4Kx18/
8Kx9, 8Kx18/16Kx9, 16Kx18/32Kx9, 32Kx18/64Kx9, 64Kx18/128Kx9, 128Kx18/256Kx9, 256Kx18/512Kx9, 512Kx18/1Mx9
FEBRUARY 10, 2009
NOTES:
1. m =
PAF offset.
2. D = maximum FIFO depth.
In IDT Standard mode: if x18 Input or x18 Output bus Width is selected, D = 2,048 for the IDT72T1845, 4,096 for the IDT72T1855, 8,192 for the IDT72T1865, 16,384 for the IDT72T1875,
32,768 for the IDT72T1885, 65,536 for the IDT72T1895, 131,072 for the IDT72T18105, 262,144 for the IDT72T18115 and 524,288 for the IDT72T18125. If both x9 Input and x9
Output bus Widths are selected, D = 4,096 for the IDT72T1845, 8,192 for the IDT72T1855, 16,384 for the IDT72T1865, 32,768 for the IDT72T1875, 65,536 for the IDT72T1885,
131,072 for the IDT72T1895, 262,144 for the IDT72T18105, 524,288 for the IDT72T18115 and 1,048,576 for the IDT72T18125.
In FWFT mode: if x18 Input or x18 Output bus Width is selected, D = 2,049 for the IDT72T1845, 4,097 for the IDT72T1855, 8,193 for the IDT72T1865, 16,385 for the IDT72T1875,
32,769 for the IDT72T1885, 65,537 for the IDT72T1895, 131,073 for the IDT72T18105, 262,145 for the IDT72T18115 and 524,289 for the IDT72T18125. If both x9 Input and x9
Output bus Widths are selected, D = 4,097 for the IDT72T1845, 8,193 for the IDT72T1855, 16,385 for the IDT72T1865, 32,769 for the IDT72T1875, 65,537 for the IDT72T1885,
131,073 for the IDT72T1895, 262,145 for the IDT72T18105, 524,289 for the IDT72T18115 and 1,048,577 for the IDT72T18125.
3.
PAF is asserted to LOW on WCLK transition and reset to HIGH on RCLK transition.
4. Select this mode by setting PFM LOW during Master Reset.
5.
RCS is LOW.
Figure 25. Asynchronous Programmable Almost-Full Flag Timing (IDT Standard and FWFT Modes)
WCLK
WEN
PAF
D - (m + 1) words
in FIFO
RCLK
tPAFA
REN
5909 drw29
D - m words
in FIFO
D - (m + 1) words in FIFO
tENS
tPAFA
tENH
tENS
tCLKL
tCLKH
NOTES:
1. n =
PAE offset.
2. For IDT Standard Mode.
3. For FWFT Mode.
4.
PAE is asserted LOW on RCLK transition and reset to HIGH on WCLK transition.
5. Select this mode by setting PFM LOW during Master Reset.
6.
RCS = LOW.
Figure 26. Asynchronous Programmable Almost-Empty Flag Timing (IDT Standard and FWFT Modes)
WCLK
WEN
PAE
n words in FIFO(2),
n + 1 words in FIFO(3)
RCLK
REN
5909 drw30
tPAEA
n + 1 words in FIFO(2),
n + 2 words in FIFO(3)
tPAEA
tENS
tENH
tCLKL
tCLKH
n words in FIFO(2),
n + 1 words in FIFO(3)
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