STA333W datasheet(28/49 Pages) STMICROELECTRONICS

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STA333W

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Doc ID 13365 Rev 2

Overcurrent warning detect adjustment bypass

The status bit OCWARN is used to warn of an overcurrent condition. When OCWARN is

asserted (set to 0), the power control block forces an adjustment to the modulation limit

(default -3dB) in an attempt to eliminate the overcurrent warning condition. Once the

overcurrent warning volume adjustment is applied, it remains applied until the device is

reset. The overcurrent limit can be changed via register OLIM (Output limit register (addr

0x34) on page 38).

6.1.4

Configuration register D (addr 0x03)

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.

6.1.5

Configuration register E (addr 0x04)

Max power correction variable

Table 23.

Overcurrent warning detect adjustment bypass

Bit

R/W

RST

Name

Description

7R/W

1OCRB

0: overcurrent warning adjustment enabled

1: overcurrent warning adjustment disabled

Reserved

ZDE

Reserved

000

Table 24.

Zero detect mute enable

Bit

R/W

RST

Name

Description

R/W

ZDE

1: enable the automatic zero-detect mute

SVE

ZCE

DCCV

PWMS

AME

NSBW

MPC

MPCV

001

Table 25.

Max power correction variable

Bit

R/W

RST

Name

Description

0R/W

0MPCV

0: use standard MPC coefficient

1: use MPCC bits for MPC coefficient

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