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STA323W Datasheet(PDF) 52 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) 52 Page - STMicroelectronics

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Register descriptions
STA323W
52/77
7.8
AutoModes™ registers
7.8.1
AutoModes™ EQ, volume, GC (address 0x0B)
Setting AMEQ to any value, other than 00, enables AutoModes™ EQ. When set, biquads 1-
4 are not user programmable. Any coefficient settings for these biquads is ignored. Also
when AutoModes™ EQ is used the pre-scale value for channels 1 and 2 becomes hard-set
to -18 dB.
11111110 (0xFE)
-79.5 dB
11111111 (0xFF)
Hard channel mute
Table 51.
Channel volume as a function of CxV[7:0] (continued)
CxV[7:0]
Volume
D7
D6
D5
D4
D3
D2
D1
D0
AMPS
Reserved
AMGC1
AMGC0
AMV1
AMV0
AMEQ1
AMEQ0
10
00
000
0
Table 52.
AutoModes™ EQ
AMEQ[1,0]
Mode (Biquad 1-4)
00
User Programmable
01
Preset EQ - PEQ bits
10
Auto Volume Controlled Loudness Curve
11
Not used
Table 53.
AutoModes™ volume
AMV[1,0]
Mode (MVOL)
00
MVOL 256, 0.5-dB steps (standard)
01
MVOL auto curve 30 steps
10
MVOL auto curve 40 steps
11
MVOL auto curve 50 steps
Table 54.
AutoModes™ gain compression/limiters
AMGC[1:0]
Mode
00
User programmable GC
01
AC no clipping
10
AC limited clipping (10%)
11
DRC night time listening mode



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