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27 MHz

Crystal

CDCE906

16.9344 MHz (384fs)

33.8688 MHz (768fs)

11.2896 MHz (256fs)

27 MHz

DVD−DSP

MPEG/AC−3

Audio Dec

Karaoke

DSP

PCM1716

Front

Surround

Center

Subwoofer

CPU Clock

64 MHz

i.e. audio rate: 44.1 kHz

Clock Inputs (CLK_IN0 and CLK_IN1)

CDCE906

SCAS814 – NOVEMBER 2005

Audio Rate kHz

fs x 256 MHz

Divider

Error ppm

fs x 512 MHz

Divider

Error ppm

M

N

P

M

N

P

16

4.096

375

2048

36

0

6.144

125

768

27

0

22.05

5.6448

75

392

25

0

8.4672

125

588

15

0

24

6.144

125

768

27

0

9.216

125

768

18

0

32

8.192

375

2048

18

0

12.288

375

2048

12

0

44.1

11.2896

375

1568

10

0

16.9344

125

784

10

0

48

12.288

375

2048

12

0

18.432

125

768

9

0

96

24.576

375

2048

6

0

36.864

375

2048

4

0

Audio Rate kHz

fs x 512 MHz

Divider

Error ppm

fs x 768 MHz

Divider

Error ppm

M

N

P

M

N

P

16

8.192

375

2048

18

0

12.288

375

2048

12

0

22.05

11.2896

375

1568

10

0

16.9344

125

784

10

0

24

12.288

375

2048

12

0

18.432

125

768

9

0

32

16.384

375

2048

9

0

24.576

375

2048

6

0

44.1

22.5792

375

1568

5

0

33.8688

125

784

5

0

48

24.576

375

2048

6

0

36.864

375

2048

4

0

96

49.152

375

2048

3

0

73.728

375

2048

2

0

Video

2 MHz

Divider

Error

1 MHz

Divider

Error

0.5

Divider

Error

Rate MHz

ppm

ppm

MHz

ppm

M

N

P

M

N

P

M

N

P

27

54

1

8

4

0

27

-

-

1

0

13.5

-

-

2

0

Typical applications for the CDCE906 are digital HDTV systems, gaming consoles, DVD players, DVD add-on

cards for multimedia PCs, and step-top boxes.

Figure 9. CDCE906 System Application Block Diagram

The CDCE906 features two clock inputs which can be used as:

•

Crystal oscillator input (default setting)

•

Two independent single-ended LVCMOS inputs

•

Differential signal input

The dedicated clock input can be selected by the input signal source Bit [7:6] of Byte 11.

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