5.04

11

IDT7203/7204/7205/7206 CMOS ASYNCHRONOUS FIFO

2048 x 9, 4096 x 9, 8192 x 9 and 16384 x 9

MILITARY AND COMMERCIAL TEMPERATURE RANGES

Figure 12. Block Diagram of 2048 x 9/4096 x 9/8192 x 9/16384 x 9 FIFO Used in Single Device Mode

IDT

7203/

7204/

7205/

7206

XI

XI

9

18

9

WRITE (

W)

FULL FLAG (

FF)

RESET (

RS)

99

18

HF

HF

DATA

(D)

IN

READ (

R)

EMPTY FLAG (

EF)

RETRANSMIT (

RT)

DATA

(Q)

OUT

IDT

7203/

7204/

7205/

7206

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NOTE:

1. Flag detection is accomplished by monitoring the

FF, EF and HF signals on either (any) device used in the width expansion configuration.

Do not connect any output signals together.

Figure 13. Block Diagram of 2048 x 18/4096 x 18/8192 x 18/16384 x 18 FIFO Memory Used in Width Expansion Mode

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

7203/

7204/

7205/

7206

(HALF–FULL FLAG)

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