IMIZ9974 データシートの表示（PDF） - Cypress Semiconductor

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IMIZ9974

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

Cypress Semiconductor 

Z9974

Block Diagram

fsela

TCLK_sel

250K

250K

VDD

250K

0

TCLK0

1

TCLK1

250K

FB_In

PLL_EN

VCO_sel

fselb

fselc

fselFB1

fselFB0

OE

MR#

VDD

250K

VDD

250K

250K

250K

250K

250K

250K

VDD

250K

VDD

250K

PLL

Ref-in

0

VCO-out

1

Feedback

0

C /2

1

/4

Reset#

Divide by

2&4

Table 1. Feedback Divider Selection

VCO_Sel

0

0

0

0

1

1

Inputs

fselFB0

0

0

1

1

0

0

1

1

1

1

Table 2. Output Divider Selection

VCO_Sel

fsela

0

0

0

1

1

0

1

1

Qa

VCO/4

VCO/8

VCO/8

VCO/16

0

1

0

1

C /2

/4

/6

0

Reset#

1

Divide by

2, 4 & 6

0

0

1

C

1

/2

Reset#

Div. by 2

fselFB1

0

1

0

1

0

1

0

1

fselb

0

1

0

1

Qb

VCO/4

VCO/8

VCO/8

VCO/16

Document #: 38-07090 Rev. *C

A AND Y

5

Gate

5

B

5

Qa(0:4)

A AND

Gate Y

5

5

B

5

A AND

Gate Y

4

4

B

4

Qb(0:4)

Qc(0:3)

1

QFB

Output

QFB

VCO/8

VCO/12

VCO/16

VCO/24

VCO/16

VCO/24

VCO/32

VCO/48

fselC

0

1

0

1

Qc

VCO/8

VCO/12

VCO/16

VCO/24

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