IDT723624(2014) Просмотр технического описания (PDF) - Integrated Device Technology

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IDT723624
(Rev.:2014)

CMOS SyncBiFIFO™ WITH BUS-MATCHING 256 x 36 x 2, 512 x 36 x 2, 1,024 x 36 x 2

Integrated Device Technology 

IDT723624/723634/723644 CMOS SyncBiFIFO™ WITH BUS-MATCHING

256 x 36 x 2, 512 x 36 x 2, 1,024 x 36 x 2

COMMERCIAL TEMPERATURE RANGE

CLKB

tCLKH

tCLK

tCLKL

EFB/ORB HIGH

CSB

W/RB

MBB

ENB

B0-B35

(Standard Mode)

OR

B0-B35

(FWFT Mode)

NOTE:

1. Read From FIFO1.

tENS2

tENH

tMDV

tEN

tMDV

tEN

tA

Previous Data

tA

W1(1)

tENS2

W1(1)

W2 (1)

tENH

tA

tA

tENS2

No Operation

W2 (1)

W3 (1)

tENH

tDIS

tDIS

3270 drw13

DATA SIZE TABLE FOR FIFO LONG-WORD READS FROM FIFO1

SIZE MODE(1)

DATA WRITTEN TO FIFO1

DATA READ FROM FIFO1

BM

SIZE

BE

A35-A27 A26-A18

A17-A9

A8-A0

B35-B27

B26-B18

B17-B9

L

X

X

A

B

C

D

A

B

C

NOTE:

1. BE is selected at Master Reset; BM and SIZE must be static throughout device operation.

Figure 11. Port B Long-Word Read Cycle Timing for FIFO1 (IDT Standard and FWFT Modes)

B8-B0

D

CLKB

EFB/ORB HIGH

CSB

W/RB

MBB

ENB

B0-B17

(Standard Mode)

OR

B0-B17

(FWFT Mode)

tENS2

tMDV

tEN

tEN tMDV

NOTE:

1. Unused word B18-B35 are indeterminate for word size reads.

tENH

tA

Previous Data

tA

Read 1

tA

Read 1

tA

Read 2

No Operation

Read 2

Read 3

tDIS

tDIS

3270 drw14

DATA SIZE TABLE FOR WORD READS FROM FIFO1

SIZE MODE(1)

DATA WRITTEN TO FIFO1

BM

SIZE

BE

A35-A27

A26-A18

A17-A9

A8-A0

READ NO.

DATA READ FROM FIFO1

B17-B9

B8-B0

H

L

H

A

H

L

L

A

B

C

D

1

A

B

2

C

D

B

C

D

1

C

D

2

A

B

NOTE:

1. BE is selected at Master Reset; BM and SIZE must be static throughout device operation .

Figure 12. Port-B Word Read Cycle Timing for FIFO1 (IDT Standard and FWFT Modes)

21

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