sta381bws STMicroelectronics, sta381bws Datasheet - Page 47
sta381bws
Manufacturer Part Number
sta381bws
Description
Sound Terminal 2.1-channel High-efficiency Digital Audio System Sound Terminal 2.1-channel High-efficiency Digital Audio System
Manufacturer
STMicroelectronics
Datasheet
1.STA381BWS.pdf
(168 pages)
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STA381BWS
6.5
6.6
MVOL register (addr 0x04)
Table 19.
1. If the volume is below -60 dB, the level will be approximated to 1 dB step.
FINEVOL register (addr 0x05)
Table 20.
Reserved
Bit
Bit
7
6
5
4
3
2
1
0
1
0
D7
D7
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Master volume register
Fine volume register
Reserved
D6
D6
0
0
RST
RST
0
0
0
0
0
0
0
0
Reserved
D5
D5
0
0
Doc ID 018937 Rev 2
MVOL[7:0]
FINE[1:0]
Name
Name
Reserved
D4
D4
0
0
MVOL[7:0]
Description
0x00: Hard mute (immediate switchoff)
0x01: Mute
0x02: Mute (PWM on)
0x03: Mute (PWM on)
others: volume = [(MVOL-255)/2] dB
Description
00 = 0 dB;
01 = -0.125 dB;
10 = -0.25 dB;
11 = -0.375 dB
Reserved
D3
D3
0
0
Register description: New Map
Reserved
D2
D2
0
0
D1
D1
0
0
FINE[1:0]
(1)
D0
D0
0
0
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