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IDT7281LA30SOGI8 View Datasheet(PDF) - Integrated Device Technology

Part NameIDT7281LA30SOGI8 IDT
Integrated Device Technology IDT
DescriptionCMOS ASYNCHRONOUS FIFO 256 x 9, 512 x 9 and 1,024 x 9
IDT7281LA30SOGI8 Datasheet PDF : 14 Pages
First Prev 11 12 13 14
IDT7201L/7201LA/7202LA CMOS ASYNCHRONOUS FIFO
256 x 9, 512 x 9 and 1,024 x 9
COMMERCIAL, INDUSTRIAL AND MILITARY
TEMPERATURE RANGES
TABLE 1 — RESET AND RETRANSMIT
Single Device Configuration/Width Expansion Mode
Mode
Inputs
RS
RT
XI
Internal Status
Read Pointer
Write Pointer
Reset
Retransmit
Read/Write
0
X
0
Location Zero
Location Zero
1
0
0
Location Zero
Unchanged
1
1
0
Increment(1)
Increment(1)
NOTE:
1. Pointer will increment if flag is HIGH.
Outputs
EF
FF
HF
0
1
1
X
X
X
X
X
X
TABLE 2 — RESET AND FIRST LOAD TRUTH TABLE
Depth Expansion/Compound Expansion Mode
Mode
Inputs
Internal Status
RS
FL
XI
Read Pointer
Write Pointer
Outputs
EF
FF
Reset First Device
Reset All Other Devices
Read/Write
0
0
(1)
Location Zero
Location Zero
0
1
(1)
Location Zero
Location Zero
1
X
(1)
X
X
0
1
0
1
X
X
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,
XI = Expansion Input, HF = Half-Full Flag Output
W
D
FULL
RS
XO
R
FF
IDT EF
7200/
9
9
7201A/
9
Q
7202A FL
VCC
XI
XO
FF
IDT
EF
9
7200/
7201A/
7202A FL
EMPTY
FF
9
XI
XO
IDT
EF
7200/
7201A/
7202A
FL
XI
2678 drw16
Figure 14. Block Diagram of 768 x 9, 1,536 x 9, 3,072 x 9 FIFO Memory (Depth Expansion)
11
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