sta333bwqs13tr STMicroelectronics, sta333bwqs13tr Datasheet - Page 35
sta333bwqs13tr
Manufacturer Part Number
sta333bwqs13tr
Description
2.1-channel High-efficiency Digital Audio System With Qsound Qhd
Manufacturer
STMicroelectronics
Datasheet
1.STA333BWQS13TR.pdf
(71 pages)
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STA333BWQS
6.5.3
6.5.4
6.5.5
6.5.6
6.5.7
Noise-shaper bandwidth selection
Table 38.
AM mode enable
Table 39.
STA333BWQS 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
approximately 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.
Bit
Bit
Bit
Bit
Bit
2
3
4
5
6
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Noise-shaper bandwidth selection
AM mode enable
PWM speed mode
Distortion compensation variable enable
Zero-crossing volume enable
RST
RST
RST
RST
RST
0
0
0
0
1
PWMS
NSBW
DCCV
Name
Name
Name
Name
Name
AME
ZCE
1: third-order NS
0: fourth-order NS
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
Description
Description
Description
Description
Description
Register description
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