sta335bwqs STMicroelectronics, sta335bwqs Datasheet - Page 37

• Manufacturer Part Number: sta335bwqs
• Description: 2.1-channel High-efficiency Digital Audio System With Qsound Qhd?
• Manufacturer: STMicroelectronics

STA335BWQS
7.5.4
7.5.5
7.5.6
7.5.7
7.5.8
AM mode enable
Table 39.
STA335BWQS 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
Table 40.
Distortion compensation variable enable
Table 41.
Zero-crossing volume enable
Table 42.
The ZCE bit enables zero-crossing volume adjustments. When volume is adjusted on digital
zero-crossings no clicks are audible.
Soft volume update enable
Table 43.
Bit
Bit
Bit
Bit
Bit
3
4
5
6
7
R/W
R/W
R/W
R/W
R/W
RW
RW
RW
RW
RW
AME
PWMS
DCCV
ZCE
SVE
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
Register description
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