STA559BWQS datasheet(57/66 Pages) STMICROELECTRONICS

Part #	STA559BWQS

Description	5-V, 2-A, 2.1-channel high-efficiency digital audio system with QSound QHD

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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STA559BWQS

Register description

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Table 69.

RAM block for biquads, mixing, scaling, and bass management

Index (Decimal) Index (Hex)

Coefficient

Default

0

0x00

Channel 1 - Biquad 1

C1H10(b1/2)

0x000000

1

0x01

C1H11(b2)

0x000000

2

0x02

C1H12(a1/2)

0x000000

3

0x03

C1H13(a2)

0x000000

4

0x04

C1H14(b0/2)

0x400000

5

0x05

Channel 1 - Biquad 2

C1H20

0x000000

……

…

19

0x13

Channel 1 - Biquad 4

C1H44

0x400000

20

0x14

Channel 2 - Biquad 1

C2H10

0x000000

21

0x15

C2H11

0x000000

……

…

39

0x27

Channel 2 - Biquad 4

C2H44

0x400000

40

0x28

High-pass 2nd order filter

for XO = 000

C12H0(b1/2)

0x000000

41

0x29

C12H1(b2)

0x000000

42

0x2A

C12H2(a1/2)

0x000000

43

0x2B

C12H3(a2)

0x000000

44

0x2C

C12H4(b0/2)

0x400000

45

0x2D

Low-pass 2nd order filter

for XO = 000

C3H0(b1/2)

0x000000

46

0x2E

C3H1(b2)

0x000000

47

0x2F

C3H2(a1/2)

0x000000

48

0x30

C3H3(a2)

0x000000

49

0x31

C3H4(b0/2)

0x400000

50

0x32

Channel 1 - Pre-scale

C1PreS

0x7FFFFF

51

0x33

Channel 2 - Pre-scale

C2PreS

0x7FFFFF

52

0x34

Channel 1 - Post-scale

C1PstS

0x7FFFFF

53

0x35

Channel 2 - Post-scale

C2PstS

0x7FFFFF

54

0x36

Channel 3 - Post-scale

C3PstS

0x7FFFFF

55

0x37

TWARN/OC– Limit

TWOCL

0x5A9DF7

56

0x38

Channel 1 - Mix 1

C1MX1

0x7FFFFF

57

0x39

Channel 1 - Mix 2

C1MX2

0x000000

58

0x3A

Channel 2 - Mix 1

C2MX1

0x000000

59

0x3B

Channel 2 - Mix 2

C2MX2

0x7FFFFF

60

0x3C

Channel 3 - Mix 1

C3MX1

0x400000

61

0x3D

Channel 3 - Mix 2

C3MX2

0x400000

62

0x3E

UNUSED

63

0x3F

UNUSED

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