9

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 13. Block Diagram of 512 x 18, 1,024 x 18, 2,048 x 18, 4,096 x 18, 8,192 x 18 and 16,384 x 18 FIFO Memory Used in Width Expansion Mode

Figure 12. Block Diagram of Single 512 x 9, 1,024 x 9, 2,048 x 9, 4,096 x 9, 8,192 x 9 and 16,384 x 9 FIFO

WRITE (

W)

DATA IN (D)

FULL FLAG (

FF)

RESET (

RS)

9

READ (

R)

9

DATA OUT (Q)

EMPTY FLAG (

EF)

RETRANSMIT (

RT)

EXPANSION IN (

XI)

(

HF)

IDT

72V01

72V02

72V03

72V04

72V05

72V06

(HALF-FULL FLAG)

3033 drw 14

IDT

72V01

72V02

72V03

72V04

72V05

72V06

XI

XI

99

18

9

18

HF

HF

9

DATA

WRITE (

W)

FULL FLAG (

FF)

RESET (

RS)

(D)

IN

READ (

R)

EMPTY FLAG (

EF)

RETRANSMIT (

RT)

DATA

(Q)

OUT

3033 drw 15

IDT

72V01

72V02

72V03

72V04

72V05

72V06

TABLE 1 — RESET AND RETRANSMIT

Single Device Configuration/Width Expansion Mode

Inputs

Internal Status

Outputs

Mode

RS

RT

XI

Read Pointer

Write Pointer

EF

FF

HF

Reset

0

X

0

LocationZero

LocationZero

0

1

1

Retransmit

1

0

0

LocationZero

Unchanged

X

X

X

Read/Write

1

1

0

XXX

NOTE:

1. Pointer will increment if flag is HIGH