sta335bw STMicroelectronics, sta335bw Datasheet - Page 28

• Manufacturer Part Number: sta335bw
• Description: 2.1 Channels High Efficiency Digital Audio System
• Manufacturer: STMicroelectronics

Register description
5.5.4
5.5.5
5.5.6
5.5.7
5.5.8
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AM mode enable
STA335BW 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
Distortion compensation variable enable
Zero-crossing volume enable
The ZCE bit enables zero-crossing volume adjustments. When volume is adjusted on digital
zero-crossings no clicks are audible.
Soft volume update enable
Bit
Bit
Bit
Bit
Bit
3
4
5
6
7
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
RST
RST
RST
RST
RST
0
0
0
1
1
PWMS
DCCV
Name
Name
Name
Name
Name
AME
ZCE
SVE
0 - Normal DDX operation.
1 - AM reduction mode DDX operation
0 - Normal speed (384 kHz) all channels
1 - Odd speed (341.3 kHz) all channels
0 - Uses preset DC coefficient
1 - Uses DCC coefficient
1 - Volume adjustments only occur at digital
zero-crossings
0 - Volume adjustments occur immediately
1 – Volume adjustments ramp according to SVR settings
0 – Volume adjustments occur immediately
Description
Description
Description
Description
Description
STA335BW