STA350BW datasheet(42/86 Pages) STMICROELECTRONICS

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STA350BW

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Doc ID 018572 Rev 3

7.4.7

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.

7.4.8

Submix mode enable

7.5

Configuration register E (addr 0x04)

7.5.1

Max power correction variable

7.5.2

Max power correction

Setting the MPC bit turns on special processing that corrects the STA350BW power device

at high power. This mode should lower the THD+N of a full FFX system at maximum power

output and slightly below. If enabled, MPC is operational in all output modes except tapered

(OM[1,0] = 01) and binary. When OCFG = 00, MPC will not effect channels 3 and 4, the line-

out channels.

Table 32.

Zero-detect mute enable

Bit

R/W

RST

Name

Description

R/W

ZDE

Setting of 1 enables the automatic zero-detect mute

Table 33.

Submix mode enable

Bit

R/W

RST

Name

Description

7R/W

SME

0: Sub Mix into Left/Right disabled

1: Sub Mix 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

Table 35.

Max power correction

Bit

R/W

RST

Name

Description

1R/W

MPC

Setting of 1 enables power bridge correction for THD

reduction near maximum power output.

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