10
COMMERCIAL AND INDUSTRIAL
TEMPERATURE RANGES
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
Figure 15. Compound FIFO Expansion
R, W, RS
Q
9
-Q
17
3033 drw 17
IDT
72V01/72V02/72V03/
72V04/72V05/72V06
DEPTH
EXPANSION
BLOCK
Q
0
-Q
8
D
9
-D
17
D
0
-D
8
D
0
-D
N
Q
(N-8)
-Q
N
D
(N-8)
-D
N
IDT
72V01/72V02/72V03/
72V04/72V05/72V06
DEPTH
EXPANSION
BLOCK
IDT
72V01/72V02/72V03/
72V04/72V05/72V06
DEPTH
EXPANSION
BLOCK
TABLE 2 — RESET AND FIRST LOAD TRUTH TABLE
Depth Expansion/Compound Expansion Mode
Inputs Internal Status Outputs
Mode RS FL XI Read Pointer Write Pointer EF FF
Reset First Device 0 0 (1) Location Zero Location Zero 0 1
Reset All Other Devices 0 1 (1) Location Zero Location Zero 0 1
Read/Write 1 X (1) X X 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
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
W
IDT
72V01
72V02
72V03
72V04
72V05
72V06
FF EF
FL
XO
RS
FULL
EMPTY
V
CC
R
9
9
9
9
XI
9
Q
FF EF
FL
XO
XI
FF EF
FL
XO
XI
IDT
72V01
72V02
72V03
72V04
72V05
72V06
IDT
72V01
72V02
72V03
72V04
72V05
72V06
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.