STA335BWS View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STA335BWS

2.1 channels high efficiency digital audio system

STMicroelectronics 

Register description

STA335BWS

6.5.2 Max power correction

6.5.3

Bit R/W RST

Name

Description

1

R/W

1

MPC

Setting of 1 enables Power Bridge correction for

THD reduction near maximum power output.

Setting the MPC bit turns on special processing that corrects the STA335BWS power device

at high power. This mode should lower the THD+N of a full DDX 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.

Noise-shaper bandwidth selection

6.5.4

Bit R/W RST

2

R/W

0

AM mode enable

Name

NSBW

Description

1: Third order NS

0: Fourth order NS

6.5.5

Bit R/W RST

Name

Description

3 R/W 0

AME

0: Normal DDX operation.

1: AM reduction mode DDX operation

STA335BWS 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

~83 dB in this mode, which is still greater than the SNR of AM radio.

PWM speed mode

6.5.6

Bit R/W RST

4 R/W 0

Name

PWMS

Description

0: Normal speed (384 kHz) all channels

1: Odd speed (341.3 kHz) all channels

Distortion compensation variable enable

Bit R/W RST

5 R/W 0

Name

DCCV

Description

0: Uses preset DC coefficient

1: Uses DCC coefficient

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