IDT72413 Integrated Device Technology, IDT72413 Datasheet - Page 9

• Manufacturer Part Number: IDT72413
• Description: Cmos Parallel 64 X 5-bit Fifo With Flags
• Manufacturer: Integrated Device Technology

NOTE:
1. Cascading the FIFOs in word width is done by ANDing the IR and OR as shown in Figure 13.
NOTE:
1. FIFOs are expandable in width. However, in forming wider words two external gates are required to generate composite Input and Output Ready flags. This requirement
IDT72413 CMOS PARALLEL FIFO WITH FLAGS
64 x 5
is due to the different fall-through times of the FIFOs.
INTERRUPT
COMPOSITE
READY
INPUT
SYSTEM 1
Figure 14. Application for IDT72413 for Two Asynchronous Systems
OUTPUT
ENABLE
ENBL SI
SHIFT IN
8-BITS
Figure 13. 64 x 15 FIFO with IDT72413
SI
IR
HF
IR
SI
D
D
D
D
D
HF
IR
SI
D
D
D
D
D
HF
IR
SI
D
D
D
D
D
IDT72413
0
1
2
3
4
0
1
2
3
4
0
1
2
3
4
HALF-FULL FLAG
64 x 8
TWO
MR
MR
MR
OE
OE
OE
9
ALMOST-FULL/
AF/E
AF/E
AF/E
OR
SO
SO
OR
SO
OR
SO
OR
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
EMPTY
0
0
0
1
2
3
4
1
2
3
4
1
2
3
4
8-BITS
IO RDY
SYSTEM 2
SHIFT OUT
MASTER
RESET
2748 drw 15
INTERRUPT
COMMERCIAL TEMPERATURE RANGE
COMPOSITE
OUTPUT
READY
2748 drw 16