STA339BWS datasheet(33/79 Pages) STMICROELECTRONICS

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STA339BWS

Both limiters can be used in one of two ways, anticlipping or dynamic range compression.

When used in anticlipping mode the limiter threshold values are constant and dependent on

the limiter settings. In dynamic range compression mode the limiter threshold values vary

with the volume settings allowing a nighttime listening mode that provides a reduction in the

dynamic range regardless of the volume level.

Zero-detect mute enable

Setting the ZDE bit enables the zero-detect automatic mute. The zero-detect circuit looks at

the data for each processing channel at the output of the crossover (bass management)

filter. If any channel receives 2048 consecutive zero value samples (regardless of fs) then

that individual channel is muted if this function is enabled.

Submix mode enable

7.1.5

Configuration register E (addr 0x04)

Max power correction variable

Max power correction

Table 33. Zero-detect mute enable

Bit

R/W

RST

Name

Description

R/W

ZDE

0: automatic zero-detect mute disabled

1: automatic zero-detect mute enabled

Table 34. Submix mode enable

Bit

R/W

RST

Name

Description

R/W

SME

0: submix into left/right disabled

1: submix into left/right enabled

SVE

ZCE

DCCV

PWMS

AME

NSBW

MPC

MPCV

11000010

Table 35. Max power correction variable

Bit

R/W

RST

Name

Description

R/W

MPCV

0: use standard MPC coefficient

1: use MPCC bits for MPC coefficient

Table 36. Max power correction

Bit

R/W

RST

Name

Description

R/W

MPC

0: function disabled

1: enables power bridge correction for THD

reduction near maximum power output.

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