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STA339BW Datasheet(PDF) 45 Page - STMicroelectronics

Part # STA339BW
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

STA339BW Datasheet(HTML) 45 Page - STMicroelectronics

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STA339BW
Register description
Doc ID 15251 Rev 5
45/77
6.6.7
External amplifier power down
The EAPD register directly disables/enables the internal power circuitry.
When EAPD = 0, the internal power section is placed on a low-power state (disabled). This
register also controls the FFX4B/EAPD output pin when OCFG = 10.
6.7
Volume control registers (addr 0x06 - 0x0A)
6.7.1
Mute/line output configuration register
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.
6.7.2
Master volume register
6.7.3
Channel 1 volume
6.7.4
Channel 2 volume
Table 51.
External amplifier power down
Bit
R/W
RST
Name
Description
7R/W
0
EAPD
0: External power stage power down active
1: Normal operation
D7
D6
D5
D4
D3
D2
D1
D0
LOC1
LOC0
Reserved
C3M
C2M
C1M
MMUTE
00
00
000
0
Table 52.
Line output configuration
LOC[1:0]
Line output configuration
00
Line output fixed - no volume, no EQ
01
Line output variable - CH3 volume effects line output, no EQ
10
Line output variable with EQ - CH3 volume effects line output
D7
D6
D5
D4
D3
D2
D1
D0
MV7
MV6
MV5
MV4
MV3
MV2
MV1
MV0
11
11
111
1
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



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