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STA323W Datasheet(PDF) 50 Page - STMicroelectronics

Part # STA323W
Description  2.1-channel high-efficiency digital audio system
PDF  77 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA323W Datasheet(HTML) 50 Page - STMicroelectronics

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Register descriptions
STA323W
50/77
7.7
Volume control
7.7.1
Master controls
Master mute register (address 0x06)
Master volume register (Address 0x07)
Note:
The value of volume derived from MV is dependent on the AMV AutoModes™ volume
settings.
7.7.2
Channel controls
Channel 1 volume (address 0x08)
Channel 2 volume (address 0x09)
Channel 3 volume (address 0x0A)
7.7.3
Volume description
The volume structure of the STA323W consists of individual volume registers for each of the
three channels and a master volume register, and individual channel volume trim registers.
The channel volume settings are normally used to set the maximum allowable digital gain
and to hard-set gain differences between certain channels. These values are normally set at
the initialization of the IC and not changed. The individual channel volumes are adjustable in
0.5-dB steps from +48 dB to -80 dB. The master volume control is normally mapped to the
master volume of the system. The values of these two settings are summed to find the
actual gain or volume value for any given channel.
D7
D6
D5
D4
D3
D2
D1
D0
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
MMUTE
00
00
000
0
D7
D6
D5
D4
D3
D2
D1
D0
MV7
MV6
MV5
MV4
MV3
MV2
MV1
MV0
111
11111
D7
D6
D5
D4
D3
D2
D1
D0
C1V7
C1V6
C1V5
C1V4
C1V3
C1V2
C1V1
C1V0
01
10
000
0
D7
D6
D5
D4
D3
D2
D1
D0
C2V7
C2V6
C2V5
C2V4
C2V3
C2V2
C2V1
C2V0
01
10
000
0
D7
D6
D5
D4
D3
D2
D1
D0
C3V7
C3V6
C3V5
C3V4
C3V3
C3V2
C3V1
C3V0
01
10
000
0



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