參數(shù)資料
型號: IDT72281L
廠商: Integrated Device Technology, Inc.
英文描述: CMOS SuperSync FIFO
中文描述: 先進(jìn)先出的CMOS SuperSync
文件頁數(shù): 20/26頁
文件大小: 277K
代理商: IDT72281L
COMMERCIAL AND INDUSTRIAL
TEMPERATURE RANGES
IDT72281/72291
CMOS SuperSync FIFO 65,536 x 9 and 131,072 x 9
20
NOTES:
1. Retransmt setup is complete after
EF
returns HIGH, only then can a read operation begin.
2.
OE
= LOW.
3. W
1
= first word written to the FIFO after Master Reset, W
2
= second word written to the FIFO after Master Reset.
4. No more than D – 2 may be written to the FIFO between Reset (Master or Partial) and Retransmt setup. Therefore,
FF
will be HIGH throughout the Retransmt setup
procedure. D = 65,536 for the IDT72281 and 131,072 for the IDT72291.
5.
EF
goes HIGH at 60 ns + 1 RCLK cycle + t
REF
.
Figure 11. Retransmit Timing (IDT Standard Mode)
t
REF
t
ENH
4675 drw 14
t
A
t
ENS
W
x
WCLK
RCLK
REN
RT
EF
PAF
HF
PAE
Q
0
- Q
n
t
SKEW2
1
2
1
W
1
t
HF
t
PAE
t
REF
W
x+1
2
W
2
t
ENH
WEN
t
ENS
t
ENS
t
ENH
(3)
t
A
t
A
(3)
(5)
t
RTS
t
RTS
t
PAF
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