IDT72V02 Integrated Device Technology, IDT72V02 Datasheet - Page 10

• Manufacturer Part Number: IDT72V02
• Description: 1k X 9 Asyncfifo, 3.3v
• Manufacturer: Integrated Device Technology

TABLE 2 — 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,
NOTES:
1. For depth expansion block see section on Depth Expansion and Figure 14.
2. For Flag detection see section on Width Expansion and Figure 13.
Reset First Device
Reset All Other Devices
Read/Write
IDT72V01/72V02/72V03/72V04/72V05/72V06 3.3V ASYNCHRONOUS FIFO
512 x 9, 1,024 x 9, 2,048 x 9, 4,096 x 9, 8,192 x 9 and 16,384 x 9
XI = Expansion Input, HF = Half-Full Flag Output
R, W, RS
Figure 14. Block Diagram of 1,536 x 9, 3,072 x 9, 6,144 x 9, 12,288 x 9, 24,576 x 9 and 49,152 x 9 FIFO Memory (Depth Expansion)
D
0
-D
N
Mode
FULL
RS
W
D
72V01/72V02/72V03/
72V04/72V05/72V06
9
EXPANSION
RS
0
0
1
DEPTH
BLOCK
IDT
Inputs
Q
D
FL
0
1
X
0
0
-Q
-D
8
8
9
9
Figure 15. Compound FIFO Expansion
XI
(1)
(1)
(1)
FF
9
FF
FF
72V01
72V02
72V03
72V04
72V05
72V06
72V01
72V02
72V03
72V04
72V05
72V06
72V01
72V02
72V03
72V04
72V05
72V06
Read Pointer
Location Zero
Location Zero
IDT
IDT
IDT
72V01/72V02/72V03/
72V04/72V05/72V06
XO
XO
XO
XI
XI
XI
10
EXPANSION
X
DEPTH
BLOCK
IDT
EF
EF
FL
FL
FL
EF
Internal Status
Q
D
9
9
-Q
-D
Write Pointer
Location Zero
Location Zero
17
17
X
9
COMMERCIAL AND INDUSTRIAL
72V01/72V02/72V03/
72V04/72V05/72V06
EXPANSION
DEPTH
BLOCK
EF
TEMPERATURE RANGES
X
IDT
0
0
R
Q
EMPTY
V
CC
Outputs
D
Q
MARCH 9, 2006
(N-8)
(N-8)
3033 drw 17
-D
-Q
N
FF
N
X
1
1