STA559BW datasheet(30/67 Pages) STMICROELECTRONICS

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STA559BW

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Dynamic range compression/anti-clipping bit

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

When used in anti-clipping 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

6.1.5

Configuration register E (addr 0x04)

Max power correction variable

Table 31. Dynamic range compression/anti-clipping bit

Bit

R/W

RST

Name

Description

R/W

DRC

0: limiters act in anti-clipping mode

1: limiters act in dynamic range compression mode

Table 32. Zero-detect mute enable

Bit

R/W

RST

Name

Description

6R/W

ZDE

0: automatic zero-detect mute disabled

1: automatic zero-detect mute enabled

Table 33. Submix mode enable

Bit

R/W

RST

Name

Description

7R/W

SME

0: submix into left/right disabled

1: submix into left/right enabled

SVE

ZCE

DCCV

PWMS

AME

NSBW

MPC

MPCV

Table 34. Max power correction variable

Bit

R/W

RST

Name

Description

0R/W

MPCV

0: use standard MPC coefficient

1: use MPCC bits for MPC coefficient

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