CS5376A-IQ(2004) 데이터 시트보기 (PDF) - Cirrus Logic

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CS5376A-IQ
(Rev.:2004)

Low Power Multi-Channel Decimation Filter

Cirrus Logic 

CS5376A

SINC1 – Single stage, fixed decimate by 8

5th order decimate by 8, 36 coefficients

SINC2 – Multi-stage, variable decimation

Stage 1: 4th order decimate by 2, 5 coefficients

Stage 2: 4th order decimate by 2, 5 coefficients

Stage 3: 5th order decimate by 2, 6 coefficients

Stage 4: 6th order decimate by 2, 7 coefficients

SINC3 – Multi-stage, variable decimation

Stage 1: 4th order decimate by 5, 17 coefficients

Stage 2: 4th order decimate by 5, 17 coefficients

Stage 3: 4th order decimate by 5, 17 coefficients

Stage 4: 5th order decimate by 2, 6 coefficients

Stage 5: 6th order decimate by 2, 7 coefficients

Stage 6: 6th order decimate by 3, 13 coefficients

Figure 24. SINC Filter Stages

SINC filters

FIR2

Output

DEC Bit

Setting

Word

Rate

4000

0111

2000

0110

1000

0101

500

0100

333

0011

250

0010

200

0001

125

0000

100

1111

50

1110

40

1101

25

1100

20

1011

10

1010

5

1001

1

1000

SINC1

Deci-

mation

8

8

8

8

8

8

8

8

8

8

8

8

8

8

8

8

SINC2

Deci-

mation

2

4

8

16

8

16

2

16

4

8

2

16

4

8

16

16

SINC2

Stages

SINC3

Deci-

mation

4

-

3,4

-

2,3,4

-

1,2,3,4

-

2,3,4

3

1,2,3,4

2

4

20

1,2,3,4

4

3,4

20

2,3,4

20

4

100

1,2,3,4

20

3,4

100

2,3,4

100

1,2,3,4

100

1,2,3,4

500

SINC3

Stages

-

-

-

-

6

5

3,4,5

4,5

3,4,5

3,4,5

2,3,4,5

3,4,5

2,3,4,5

2,3,4,5

2,3,4,5

1,2,3,4,5

Table 9. SINC Filter Configurations

44

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