STA326
7.9 AUTOMODE REGISTERS
7.9.1 Register – AutoModes EQ, Volume, GC (Address 0Bh)
D7
AMPS
1
D6
D5
AMGC1
0
D4
AMGC0
0
D3
AMV1
0
D2
AMV0
0
D1
AMEQ1
0
D0
AMEQ0
0
Table 18. AutoMode EQ
AMEQ (1,0)
Mode (Biquad 1-4)
00
01
10
11
User Programmable
Preset EQ – PEQ bits
Auto Volume Controlled Loudness Curve
Not used
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
AMV (1,0)
Mode (MVOL)
MVOL 0.5dB 256 Steps (Standard)
00
01
10
11
MVOL Auto Curve 30 Steps
MVOL Auto Curve 40 Steps
MVOL Auto Curve 50 Steps
Table 20. AutoMode Gain Compression/Limiters
AMGC (1...0)
Mode
00
01
10
11
User Programmable GC
AC No Clipping
AC Limited Clipping (10%)
DRC Nighttime Listening Mode
7.9.2 AMPS – AutoMode Auto Prescale
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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