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): 21/26頁
文件大?。?/td> 277K
代理商: IDT72281L
21
COMMERCIAL AND INDUSTRIAL
TEMPERATURE RANGES
IDT72281/72291
CMOS SuperSync FIFO 65,536 x 9 and 131,072 x 9
NOTES:
1. Retransmt setup is complete after
OR
returns LOW.
2. No more than D – 2 words may be written to the FIFO between Reset (Master or Partial) and Retransmt setup. Therefore,
IR
will be LOW throughout the Retransmt setup
procedure. D = 65,537 for the IDT72281 and 131,073 for the IDT72291.
3.
OE
= LOW.
4. W
1
, W
2
, W
3
= first, second and third words written to the FIFO after Master Reset.
5.
OR
goes LOW at 60 ns + 2 RCLK cycles + t
REF
.
Figure 12. Retransmit Timing (FWFT Mode)
Figure 13. Serial Loading of Programmable Flag Registers (IDT Standard and FWFT Modes)
WCLK
SEN
SI
4675 drw16
t
ENH
t
ENS
t
LDS
LD
t
DS
BIT 0
EMPTY OFFSET
BIT X
BIT 0
FULL OFFSET
(1)
t
ENH
BIT X
(1)
t
LDH
t
LDH
t
DH
t
REF
t
ENH
4675 drw 15
t
ENS
W
x
WCLK
RCLK
REN
RT
OR
PAF
HF
PAE
Q
0
- Q
n
t
SKEW2
1
2
1
t
HF
t
PAE
t
REF
W
x+1
2
W
2
t
ENH
WEN
t
ENS
W
1
t
ENH
(4)
(5)
3
4
t
ENH
W
3
t
RTS
t
A
t
A
t
RTS
t
PAF
NOTE:
1. X = 15 for the IDT72281 and X = 16 for the IDT72291.
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