參數(shù)資料
型號: IDT72V261LA
廠商: Integrated Device Technology, Inc.
英文描述: 3.3 VOLT CMOS SuperSync FIFO
中文描述: 3.3伏的CMOS SuperSync先進先出
文件頁數(shù): 9/27頁
文件大小: 310K
代理商: IDT72V261LA
IDT72V261LA/72V271LA
3.3 VOLT CMOS SuperSync FIFO 16,384 x 9 and 32,768 x 9
9
COMMERCIAL AND INDUSTRIAL
TEMPERATURE RANGES
Figure 4. Programmable Flag Offset Programming Sequence
Figure 3. Offset Register Location and Default Values
EMPTY OFFSET (LSB) REG.
8
7
0
EMPTY OFFSET (MSB) REG.
00H
8
5
0
FULL OFFSET (LSB) REG.
8
7
0
FULL OFFSET (MSB) REG.
00H
8
5
0
DEFAULT VALUE
07FH if
LD
is LOW at Master Reset
3FFH if
LD
is HIGH at Master Reset
DEFAULT VALUE
07FH if
LD
is LOW at Master Reset
3FFH if
LD
is HIGH at Master Reset
EMPTY OFFSET (LSB) REG.
DEFAULT VALUE
07FH if
LD
is LOW at Master Reset
3FFH if
LD
is HIGH at Master Reset
8
7
0
EMPTY OFFSET (MSB) REG.
00H
8
6
0
4673 drw 06
FULL OFFSET (LSB) REG.
8
7
0
FULL OFFSET (MSB) REG.
00H
8
6
0
DEFAULT VALUE
07FH if
LD
is LOW at Master Reset
3FFH if
LD
is HIGH at Master Reset
IDT72V261LA
16,384 x 9
BIT
IDT72V271LA
32,768 x 9
BIT
WCLK
RCLK
Selection
X
Parallel write to registers:
Empty Offset (LSB)
Empty Offset (MSB)
Full Offset (LSB)
Full Offset (MSB)
X
Parallel read from registers:
Empty Offset (LSB)
Empty Offset (MSB)
Full Offset (LSB)
Full Offset (MSB)
X
X
No Operation
X
Write Memory
X
Read Memory
X
X
No Operation
4673 drw 07
LD
0
0
X
1
1
1
0
WEN
0
1
1
0
X
1
1
REN
1
0
1
X
0
1
1
X
Serial shift into registers:
28 bits for the 72V261LA
30 bits for the 72V271LA
1 bit for each rising WCLK edge
Starting with Empty Offset (LSB)
Ending with Full Offset (MSB)
SEN
1
1
1
X
X
X
0
NOTES:
1. The programmng method can only be selected at Master Reset.
2. Parallel reading of the offset registers is always permtted regardless of which programmng method has been selected.
3. The programmng sequence applies to both IDT Standard and FWFT modes.
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