CY29972AI datasheet(1/8 Pages) CYPRESS

номер детали	CY29972AI

подробное описание детали	3.3V, 125-MHz Multi-Output Zero Delay Buffer

PDF	8 Pages

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производитель	CYPRESS [Cypress Semiconductor]

домашняя страница	http://www.cypress.com

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3.3V, 125-MHz Multi-Output Zero Delay Buffer

CY29972

Cypress Semiconductor Corporation

•

3901 North First Street

•

San Jose

•

CA 95134

•

408-943-2600

Document #: 38-07290 Rev. *A

December 22, 2002

2

Features

• Output frequency up to 125 MHz

• 12 Clock outputs: frequency configurable

• 350 ps max. output-to-output skew

• Configurable output disable

• Two reference clock inputs for dynamic toggling

• Oscillator or crystal reference input

• Spread-spectrum-compatible

• Glitch-free output clocks transitioning

• 3.3V power supply

• Pin-compatible with MPC972

• Industrial temperature range: –40°C to +85°C

• 52-pin TQFP package

Table 1. Frequency Table[1]

VC0_SEL

FB_SEL2

FB_SEL1

FB_SEL0

FVC0

0000

8x

0001

12x

0010

16x

0011

20x

0100

16x

0101

24x

0110

32x

0111

40x

1000

4x

1001

6x

1010

8x

1011

10x

1100

8x

1101

12x

1110

16x

1111

20x

Note:

1.

x = the reference input frequency, 200 MHz < FVCO < 480 MHz.

Block Diagram

Pin Configuration

REF_SEL

0

1

0

1

Phase

Detector

VCO

LPF

Sync

Frz

D Q

QA0

Sync

Frz

D Q

Sync

Frz

D Q

Sync

Frz

D Q

Sync

Frz

D Q

Sync

Frz

D Q

0

1

/2

Power-On

Reset

Output Disable

Circuitry

Data Generator

/4, /6, /8, /12

/4, /6, /8, /10

/2, /4, /6, /8

/4, /6, /8, /10

Sync Pulse

XIN

XOUT

TCLK0

TCLK1

TCLK_SEL

FB_IN

FB_SEL2

MR#/OE

SELA(0,1)

2

SELB(0,1)

2

SELC(0,1)

2

FB_SEL(0,1)

2

SCLK

SDATA

INV_CLK

QA1

QA2

QA3

QB0

QB1

QB2

QB3

QC0

QC1

QC2

QC3

FB_OUT

SYNC

12

VCO_SEL

PLL_EN

VSS

MR#/OE

SCLK

SDATA

FB_SEL2

PLL_EN

REF_SEL

TCLK_SEL

TCLK0

TCLK1

XIN

XOUT

VDD

VSS

QB0

VDDC

QB1

VSS

QB2

VDDC

QB3

FB_IN

VSS

FB_OUT

VDDC

FB_SEL0

1

2

3

4

5

6

7

8

9

10

11

12

13

39

38

37

36

35

34

33

32

31

30

29

28

27

14 15 16 17 18 19 20 21 22 23 24 25 26

52 51 50 49 48 47 46 45 44 43 42 41 40

CY29972

Аналогичный номер детали - CY29972AI

производитель	номер детали	датащи	подробное описание детали
Cypress Semiconductor	CY29972AI	85Kb / 8P	3.3V, 125-MHz Multi-Output Zero Delay Buffer
	CY29972AI	370Kb / 13P	3.3 V, 125-MHz Multi-Output Zero Delay Buffer Output frequency up to 125 MHz
	CY29972AIT	85Kb / 8P	3.3V, 125-MHz Multi-Output Zero Delay Buffer
	CY29972AIT	370Kb / 13P	3.3 V, 125-MHz Multi-Output Zero Delay Buffer Output frequency up to 125 MHz

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Аналогичное описание - CY29972AI

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