IDT72V82 Integrated Device Technology, IDT72V82 Datasheet - Page 9
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IDT72V82
Manufacturer Part Number
IDT72V82
Description
1k X 9 Dualasync Fifo, 3.3v
Manufacturer
Integrated Device Technology
Datasheet
1.IDT72V82.pdf
(12 pages)
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TABLE I—RESET AND RETRANSMIT
Single Device Configuration/Width Expansion Mode
NOTE:
1. Pointer will increment if flag is High.
TABLE II—RESET AND FIRST LOAD TRUTH TABLE
Depth Expansion/Compound Expansion Mode
NOTE:
1. XI is connected to XO of previous device. See Figure 14. RS = Reset Input, FL/RT = First Load/Retransmit, EF = Empty Flag Output, FF = Full Flag Output,
IDT72V81/72V82/72V83/72V84/72V85 3.3V CMOS DUAL ASYNCHRONOUS FIFO
512 x 9, 1024 x 9, 2048 x 9, 4096 x 9, 8192 x 9
Reset
Retransmit
Read/Write
Reset First Device
Reset All Other Devices
Read/Write
sion Input, HF = Half-Full Flag Output
Mode
Mode
Figure 14. Block Diagram of 2,048 x 9, 4,096 x 9, 8,192 x 9, 16,384 x 9 and 32,768 x 9 FIFO Memory (Depth Expansion)
FULL
RSA
W
D
RS
RS
0
1
1
0
0
1
9
Inputs
Inputs
RT
FL
X
0
1
0
1
X
9
9
FFA
(1)
(1)
(1)
XI
XI
FFB
0
0
0
FFA
FFB
9
72V81/72V82
72V83/72V84
72V81/72V82
72V83/72V84
72V85
72V85
Location Zero
Location Zero
Increment
Read Pointer
Location Zero
Location Zero
FIFO A
FIFO B
FIFO A
FIFO B
Read Pointer
XOA
XIB
9
XOA
XIB
X
(1)
FLB
EFB
FLB
EFA
FLA
XIA
XOB
EFA
XOB
EFB
FLA
XIA
Internal Status
Internal Status
Location Zero
Unchanged
Increment
Write Pointer
Location Zero
Location Zero
Write Pointer
9
X
(1)
COMMERCIAL TEMPERATURE RANGE
V
R
Q
EMPTY
3966 drw 16
EF
CC
0
X
X
EF
X
0
0
Outputs
Outputs
FF
1
X
X
JULY 17, 2006
FF
X
XI = Expan-
1
1
HF
1
X
X