STA320

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5.3.3 Over-Current Warning Detect Adjustment Bypass

The OCDETECT input is used to indicate an Over-Current Warning condition. When OCDETECT is as-

serted (set to 0), the power control block will force a -3dB adjustment to the modulation limit in an attempt

to eliminate the over-current warning condition.

Once the over-current warning volume adjustment is applied, it remains in this state until reset is applied.

5.4 Configuration Register D(Address 03h)

5.4.1 High-Pass Filter Bypass

The STA320 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

5.4.2 De-Emphasis

Setting the DEMP bit enables de-emphasis on all channels

5.4.3 DSP Bypass

Setting the DSPB bit bypasses the EQ functionality of the STA320.

5.4.4 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.

BIT

R/W

RST

NAME

DESCRIPTION

7

R/W

1

OCRB

Over-Current-Warning Adjustment Bypass:

0 - Over-Current warning Adjustment enabled

1 - Over-Current warning Adjustment disabled

D7

D6

D5

D4

D3

D2

D1

D0

MME

ZDE

DRC

BQL

PSL

DSPB

DEMP

HPB

010000

00

BIT

R/W

RST

NAME

DESCRIPTION

0

R/W

0

HPB

High-Pass Filter Bypass Bit. Setting of one bypasses internal

AC coupling digital high-pass filter

BIT

R/W

RST

NAME

DESCRIPTION

1

R/W

0

DEMP

DE-emphasis

0 - No De-emphasis

1 - De-emphasis

BIT

R/W

RST

NAME

DESCRIPTION

2

R/W

0

DSPB

DSP bypass Bit:

0 - Normal Operation

1 - Bypass of Biquad and Bass/Treble Functionality

BIT

R/W

RST

NAME

DESCRIPTION

3

R/W

0

PSL

Post-Scale Link:

0 - Each Channel uses individual Post-Scale value

1 - Each Channel uses Channel 1 Post-Scale value