IDT72221L10PF datasheet(6/14 Pages) IDT

Part #	IDT72221L10PF

Description	CMOS SyncFIFOO 64 X 9, 256 x 9, 512 x 9, 1024 X 9, 2048 X 9 and 4096 x 9

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Manufacturer	IDT [Integrated Device Technology]

Direct Link	http://www.idt.com

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COMMERCIALANDINDUSTRIAL

TEMPERATURERANGES

IDT72421/72201/72211/72221/72231/72241/72251 CMOS SyncFIFO™

64 x 9, 256 x 9, 512 x 9, 1,024 x 9, 2,048 x 9, 4,096 x 9 and 8,192 x 9

6



Figure 3. Offset Register Location and Default Values

86

0

Empty Offset (LSB) Reg.

Default Value 007H

80

Full Offset (LSB) Reg.

Default Value 007H

87

0

Empty Offset (LSB) Reg.

Default Value 007H

80

Full Offset (LSB) Reg.

Default Value 007H

7

80

Empty Offset (LSB)

Default Value 007H

80

Full Offset (LSB)

Default Value 007H

IDT72421 - 64 x 9-BIT

IDT72201 - 256 x 9-BIT

IDT72211 - 512 x 9-BIT

7

80

(MSB)

1

80

0

80

87

0

Empty Offset (LSB) Reg.

Default Value 007H

80

Full Offset (LSB) Reg.

Default Value 007H

7

87

0

Empty Offset (LSB) Reg.

Default Value 007H

80

Empty Offset (LSB)

Default Value 007H

IDT72221 - 1,024 x 9-BIT

IDT72231 - 2,048 x 9-BIT

IDT72241 - 4,096 x 9-BIT

7

80

(MSB)

0000

2

(MSB)

000

3

80

(MSB)

00

1

80

(MSB)

00

1

5

65

80

8

0

8

(MSB)

1

0

IDT72251 8,192 x 9-BIT

80

Empty Offset (LSB)

Default Value 007H

7

80

(MSB)

00000

4

87

0

Full Offset (LSB) Reg.

Default Value 007H

80

2

(MSB)

000

80

Full Offset (LSB)

Default Value 007H

7

80

(MSB)

0000

3

80

Full Offset (LSB)

Default Value 007H

7

80

(MSB)

00000

4

2655 drw 05

Thecontentsoftheoffsetregisterscanbereadontheoutputlineswhenthe

WriteEnable2/Load(WEN2/

LD)pinissetLOWandbothReadEnables(REN1,

REN2) are set LOW. Data can be read on the LOW-to-HIGH transition of the

Read Clock (RCLK).

A read and write should not be performed simultaneously to the offset

registers.

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Manufacturer	Part #	Datasheet	Description
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IDT72221L10PF Datasheet(PDF) 6 Page - Integrated Device Technology

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