参数资料
型号: IDT72V291L10TF
厂商: IDT, Integrated Device Technology Inc
文件页数: 16/26页
文件大小: 0K
描述: IC FIFO SS 32768X36 10NS 64QFP
标准包装: 80
系列: 72V
功能: 同步
存储容量: 1.1M(32K x 36)
数据速率: 100MHz
访问时间: 10ns
电源电压: 3 V ~ 3.6 V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 64-LQFP
供应商设备封装: 64-TQFP(10x10)
包装: 托盘
其它名称: 72V291L10TF
23
COMMERCIAL AND INDUSTRIAL
TEMPERATURE RANGES
IDT72V281/72V291 3.3V CMOS SUPERSYNC FIFOTM
65,536 x 9 and 131,072 x 9
NOTES:
1. m =
PAF offset .
2. D = maximum FIFO depth.
In IDT Standard mode: D = 65,536 for the IDT72V281 and 131,072 for the IDT72V291.
In FWFT mode: D = 65,537 for the IDT72V281 and 131,073 for the IDT72V291.
3. tSKEW2 is the minimum time between a rising RCLK edge and a rising WCLK edge to guarantee that
PAF will go HIGH (after one WCLK cycle plus tPAF). If the time between the rising edge of
RCLK and the rising edge of WCLK is less than tSKEW2, then the
PAF deassertion time may be delayed one extra WCLK cycle.
4.
PAF is asserted and updated on the rising edge of WCLK only.
Figure 18. Programmable Almost-Full Flag Timing (IDT Standard and FWFT Modes)
NOTES:
1. n =
PAE offset.
2. For IDT Standard mode
3. For FWFT mode.
4. tSKEW2 is the minimum time between a rising WCLK edge and a rising RCLK edge to guarantee that
PAE will go HIGH (after one RCLK cycle plus tPAE). If the time between the rising edge of
WCLK and the rising edge of RCLK is less than tSKEW2, then the
PAE deassertion may be delayed one extra RCLK cycle.
5.
PAE is asserted and updated on the rising edge of WCLK only.
Figure 20. Half-Full Flag Timing (IDT Standard and FWFT Modes)
Figure 19. Programmable Almost-Empty Flag Timing (IDT Standard and FWFT Modes)
NOTES:
1. For IDT Standard mode: D = maximum FIFO depth. D = 65,536 for the IDT72V281 and 131,072 for the IDT72V291.
2. For FWFT mode: D = maximum FIFO depth. D = 65,537 for the IDT72V281 and 131,073 for the IDT72V291.
WCLK
tENS
tENH
WEN
HF
tENS
tHF
RCLK
tHF
REN
4513 drw 23
tCLKL
tCLKH
D/2 words in FIFO(1),
[
+ 1
] words in FIFO(2)
D-1
2
D/2 + 1 words in FIFO
(1),
[
+ 2
] words in FIFO(2)
D-1
2
D/2 words in FIFO(1),
[
+ 1
] words in FIFO(2)
D-1
2
WCLK
t ENH
t CLKH
tCLKL
WEN
PAE
RCLK
t ENS
n words in FIFO (2),
n+1 words in FIFO (3)
tPAE
tSKEW2
tPAE
12
(4)
REN
4513 drw 22
t ENS
t ENH
n+1 words in FIFO (2),
n+2 words in FIFO (3)
n words in FIFO (2),
n+1 words in FIFO (3)
WCLK
t ENH
t CLKH
tCLKL
WEN
PAF
RCLK
(3)
tPAF
REN
4513 drw 21
t ENS
t ENH
t ENS
D - (m+1) words in FIFO(2)
tPAF
D - m words in FIFO(2)
tSKEW2
1
2
12
D-(m+1) words
in FIFO(2)
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