STA381BWS datasheet(80/174 Pages) STMICROELECTRONICS

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STA381BWS

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DocID018937 Rev 7

Dynamic range compression mode

6.23.5

Limiter 1 extended attack threshold (addr 0x43)

The extended attack threshold value is determined as follows:

attack threshold = -12 + EATH1 / 4

To enable this feature, the EATHEN1 bit must be set to 1.

6.23.6

Limiter 1 extended release threshold (addr 0x44)

The extended release threshold value is determined as follows:

release threshold = -12 + ERTH1 / 4

To enable this feature, the ERTHEN1 bit must be set to 1.

Table 71. Limiter attack threshold as

a function of LxAT bits (DRC mode)

Table 72. Limiter release threshold as

a function of LxRT bits (DRC mode)

LxAT[3:0]

DRC (dB relative to volume)

LxRT[3:0]

DRC (dB relative to volume +

LxAT)

0000

-31

0000



0001

-29

0001

-38 dB

0010

-27

0010

-36 dB

0011

-25

0011

-33 dB

0100

-23

0100

-31 dB

0101

-21

0101

-30 dB

0110

-19

0110

-28 dB

0111

-17

0111

-26 dB

1000

-16

1000

-24 dB

1001

-15

1001

-22 dB

1010

-14

1010

-20 dB

1011

-13

1011

-18 dB

1100

-12

1100

-15 dB

1101

-10

1101

-12 dB

1110

-7

1110

-9 dB

1111

-4

1111

-6 dB

EATHEN1

EATH1[6]

EATH1[5]

EATH1[4]

EATH1[3]

EATH1[2]

EATH1[1]

EATH1[0]

00110000

ERTHEN1

ERTH1[6]

ERTH1[5]

ERTH1[4]

ERTH1[3]

ERTH1[2]

ERTH1[1]

ERTH1[0]

00110000

Obsolete

Product(s)

- Obsolete

Product(s)

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