STA335BWSQS datasheet(32/70 Pages) STMICROELECTRONICS

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STA335BWSQS

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6.4

Configuration register D (addr 0x03)

6.4.1

High-pass filter bypass

The STA335BWSQS features an internal digital high-pass filter for the purpose of AC

coupling. The purpose of this filter is to prevent DC signals from passing through a DDX®

amplifier. DC signals can cause speaker damage. When HPB = 0, this filter is enabled.

6.4.2

De-emphasis

Setting the DEMP bit enables de-emphasis on all channels

6.4.3

DSP bypass

Setting the DSPB bit bypasses the EQ functionality of the STA335BWSQS.

6.4.4

Post-scale link

Post-scale functionality can be used for power-supply error correction. For multi-channel

applications running off the same power-supply, the post-scale values can be linked to the

value of channel 1 for ease of use and update the values faster.

MME

ZDE

DRC

BQL

PSL

DSPB

DEMP

HPB

000

Table 27.

HPB

Bit

RST

Name

Description

0RW

HPB

Setting of one bypasses internal AC coupling digital

high-pass filter

Table 28.

DEMP

Bit

RST

Name

Description

1RW

DEMP

0: No de-emphasis

1: De-emphasis

Table 29.

DSPB

Bit

RST

Name

Description

DSPB

0: Normal operation

1: Bypass of biquad and bass/treble functionality

Table 30.

PSL

Bit

RST

Name

Description

PSL

0: Each channel uses individual post-scale value

1: Each channel uses channel 1 post-scale value

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