STA320

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Setting the MPC bit turns on special processing that corrects the STA50x/STA51x power device at high power.

This mode should lower the THD+N of a full STA50x/STA51x DDX system at maximum power output and slight-

ly below. If enabled, MPC is operational in all output modes except tapered (OM(1,0) = 01).

5.5.3 Noise-Shaper Bandwidth Selection

5.5.4 AM Mode Enable

The STA320 features a DDX processing mode that minimizes the amount of noise generated in frequency range

of AM radio. This mode is intended for use when DDX is operating in a device with an AM tuner active.

The SNR of the DDX processing is reduced to ~83dB in this mode, which is still greater than the SNR of AM

radio.

5.5.5 PWM Speed Mode

5.5.6 Distortion Compensation Variable Enable

5.5.7 Zero-Crossing Volume Enable

The ZCE bit enables zero-crossing volume adjustments. When volume is adjusted on digital zero-crossings no

clicks will be audible.

5.5.8 Soft Volume Enable

5.6 Configuration Register F(Address 05h)

BIT

R/W

RST

NAME

DESCRIPTION

2

R/W

0

NSBW

Noise-Shaper Bandwidth Selection:

BIT

R/W

RST

NAME

DESCRIPTION

3

R/W

0

AME

AM Mode Enable:

0 - Normal DDX operation.

1 - AM reduction mode DDX operation

BIT

R/W

RST

NAME

DESCRIPTION

4

R/W

0

PWMS

PWM Speed Selection:

0 - Normal Speed(384kHz) All Channels

1 - Odd Speed(341.3kHz) All Channels

BIT

R/W

RST

NAME

DESCRIPTION

5

R/W

0

DCCV

Distortion Compensation Variable Enable:

0 - Uses Preset DC Coefficient.

1 - Uses DCC Coefficient.

BIT

R/W

RST

NAME

DESCRIPTION

6

R/W

1

ZCE

Zero-Crossing Volume Enable:

1 - Volume adjustments will only occur at digital zero-crossings

0 - Volume adjustments will occur immediately

BIT

R/W

RST

NAME

DESCRIPTION

7

R/W

1

SVE

Soft Volume Enable:

1 - Volume adjustments ramp according to SVR settings

0 - Volume adjustments will occur immediately

D7

D6

D5

D4

D3

D2

D1

D0

EAPD

PWDN

ECLE

LDTE

BCLE

IDE

OCFG1P

OCFG0

010111

00