sta559bwqs STMicroelectronics, sta559bwqs Datasheet - Page 38

• Manufacturer Part Number: sta559bwqs
• Description: 5-v, 2-a, 2.1-channel High-efficiency Digital Audio System With Qsound Qhd?
• Manufacturer: STMicroelectronics

Register description
5.5.4
5.5.5
5.5.6
5.5.7
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AM mode enable
Table 39.
STA559BWQS 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 will be audible.
Bit
Bit
Bit
Bit
3
4
5
6
RW
RW
RW
RW
RW
RW
RW
RW
AM mode enable
PWM speed mode
Distortion compensation variable enable
Zero-crossing volume enable
RST
RST
RST
RST
0
0
0
1
PWMS
DCCV
Name
Name
Name
Name
AME
ZCE
AM mode enable:
0 - Normal DDX operation.
1 - AM reduction mode DDX operation
PWM speed selection:
0 - Normal speed (384 kHz) all channels
1 - Odd speed (341.3k Hz) all channels
Distortion compensation variable enable:
0 - Uses preset DC coefficient.
1 - Uses DCC coefficient.
Zero-crossing volume enable:
1 - Volume adjustments will only occur at digital zero-
crossings
0 - Volume adjustments will occur immediately
Description
Description
Description
Description
STA559BWQS