sta333bwqs13tr STMicroelectronics, sta333bwqs13tr Datasheet - Page 42

• Manufacturer Part Number: sta333bwqs13tr
• Description: 2.1-channel High-efficiency Digital Audio System With Qsound Qhd
• Manufacturer: STMicroelectronics

Register description
6.7
6.7.1
6.7.2
6.7.3
6.7.4
6.7.5
42/71
Volume control registers (0x06 to 0x0A)
Mute/line output configuration register
Table 52.
Line output is only active when OCFG = 00. In this case LOC determines the line output
configuration. The source of the line output is always the channel 1 and 2 inputs.
Master volume register
Channel 1 volume
Channel 2 volume
Channel 3 / line output volume
The volume structure of the STA333BWQS consists of individual volume registers for each
channel and a master volume register that provides an offset to each channels volume
setting. The individual channel volumes are adjustable in 0.5 dB steps from +48 dB to
-80 dB.
As an example if C3V = 0x00 or +48 dB and MV = 0x18 or –12 dB, then the total gain for
channel 3 = +36 dB.
LOC1
C1V7
C2V7
C3V7
MV7
D7
D7
D7
D7
D7
0
1
0
0
0
LOC[1:0]
00
01
10
Line output configuration
LOC0
C1V6
C2V6
C3V6
MV6
D6
D6
D6
D6
D6
0
1
1
1
1
Line output fixed, no volume, no EQ
Line output variable, CH3 volume effects line output, no EQ
Line output variable with EQ, CH3 volume effects line output
C1V5
C2V5
C3V5
MV5
D5
D5
D5
D5
D5
1
1
1
1
C1V4
C2V4
C3V4
MV4
D4
D4
D4
D4
D4
1
0
0
0
Line output configuration
C1V3
C2V3
C3V3
C3M
MV3
D3
D3
D3
D3
D3
0
1
0
0
0
C1V2
C2V2
C3V2
C2M
MV2
D2
D2
D2
D2
D2
0
1
0
0
0
C1V1
C2V1
C3V1
C1M
MV1
D1
D1
D1
D1
D1
0
1
0
0
0
STA333BWQS
MMUTE
C1V0
C2V0
C3V0
MV0
D0
D0
D0
D0
D0
0
1
0
0
0