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STA326 Datenblatt(PDF) 23 Page - STMicroelectronics

Teilenummer STA326
Bauteilbeschribung  2.1 HIGH EFFICIENCY DIGITAL AUDIO SYSTEM
PDF  43 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA326 Datenblatt(HTML) 23 Page - STMicroelectronics

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STA326
7.9 AUTOMODE REGISTERS
7.9.1
Register – AutoModes EQ, Volume, GC (Address 0Bh)
Table 18. AutoMode EQ
By setting AMEQ to any setting other than 00 enables AutoMode EQ. When set, biquads 1-4 are not user
programmable. Any coefficient settings for these biquads will be ignored. Also when AutoMode EQ is used
the pre-scale value for channels 1-2 becomes hard-set to –18dB.
Table 19. AutoMode Volume
Table 20. AutoMode Gain Compression/Limiters
7.9.2
AMPS – AutoMode Auto Prescale
D7
D6
D5
D4
D3
D2
D1
D0
AMPS
AMGC1
AMGC0
AMV1
AMV0
AMEQ1
AMEQ0
10
0
0
0
0
0
AMEQ (1,0)
Mode (Biquad 1-4)
00
User Programmable
01
Preset EQ – PEQ bits
10
Auto Volume Controlled Loudness Curve
11
Not used
AMV (1,0)
Mode (MVOL)
00
MVOL 0.5dB 256 Steps (Standard)
01
MVOL Auto Curve 30 Steps
10
MVOL Auto Curve 40 Steps
11
MVOL Auto Curve 50 Steps
AMGC (1...0)
Mode
00
User Programmable GC
01
AC No Clipping
10
AC Limited Clipping (10%)
11
DRC Nighttime Listening Mode
BIT
R/W
RST
NAME
DESCRIPTION
0
R/W
0
AMPS
AutoMode Pre-Scale
0 – -18dB used for Pre-scale when AMEQ /= 00
1 – User Defined Pre-scale when AMEQ /= 00



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