IDT72V01 IDT [Integrated Device Technology], IDT72V01 Datasheet - Page 10

• Manufacturer Part Number: IDT72V01
• Description: 3.3 VOLT CMOS ASYNCHRONOUS FIFO 512 x 9, 1024 x 9, 2048 x 9, 4096 x 9
• Manufacturer: IDT [Integrated Device Technology]

IDT72V01/72V02/72V03/72V04 3.3 VOLT CMOS ASYNCHRONOUS FIFO
512 x 9, 1,024 x 9, 2,048 x 9, 4,096 x 9
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.
Reset
Retransmit
Read/Write
Reset First Device
Reset All Other Devices
Read/Write
XI
XI
is connected to
= Expansion Input,
Mode
Mode
FULL FLAG (
DATA
RESET (
WRITE (
XO
of previous device. See Figure 14.
IN
HF
RS
FF
(D)
W
= Half-Full Flag Output
Figure 13. Block Diagram of 1024 x 18 FIFO Memory Used in Width Expansion Mode
)
)
)
RS RS
RS RS
0
1
1
0
0
1
FULL FLAG (
18
DATA IN (D)
RESET (
WRITE (
Inputs
Inputs
(HALF–FULL FLAG)
RT RT
FL FL
9
X
X
0
1
0
1
Figure 12. Block Diagram of Single 1024 x 9 FIFO
EXPANSION IN (
RS
FF
W
)
)
)
72V01
72V02
72V03
72V04
RS
(1)
(1)
(1)
IDT
XI XI
XI XI
HF
0
0
0
9
= Reset Input,
XI
XI
Location Zero
Location Zero
Increment
Read Pointer
Location Zero
Location Zero
Read Pointer
)
72V01
72V02
72V03
72V04
(
9
5.08
IDT
HF
FL
)
X
9
/
RT
(1)
Internal Status
Internal Status
= First Load/Retransmit,
9
72V01
72V02
72V03
72V04
IDT
HF
Location Zero
Unchanged
Increment
Write Pointer
Location Zero
Location Zero
Write Pointer
XI
READ (
RETRANSMIT (
DATA OUT (Q)
EMPTY FLAG (
X
(1)
9
R
)
EF
2679 drw 14
COMMERCIAL TEMPERATURE RANGE
= Empty Flag Output,
18
EF
RT
)
)
EF EF
DATA
X
X
READ (
EMPTY FLAG (
RETRANSMIT (
0
EF EF
0
0
X
OUT
Outputs
Outputs
R
FF
)
(Q)
FF FF
X
1
X
= Flag Full Output,
2679 drw 15
EF
RT
FF FF
X
)
1
1
)
2679 tbl 09
2679 tbl 10
HF HF
1
X
X
10