sta323wqs STMicroelectronics, sta323wqs Datasheet - Page 49

• Manufacturer Part Number: sta323wqs
• Description: 2.1-channel High-efficiency Digital Audio System With Qsound Qhd??
• Manufacturer: STMicroelectronics

STA323WQS
Setting AMEQ to any value, other than 00, enables automode EQ. When set, biquads 1-4
are not user programmable. Any coefficient settings for these biquads is ignored. Also when
automode EQ is used the pre-scale value for channels 1 and 2 becomes hard-set to –18 dB.
Table 52.
Table 53.
Table 54.
Register – automode AM/pre-Scale/bass management scale (address 0x0C)
Table 55.
Table 56.
00
01
10
11
00
01
10
11
0
0
3…1 R/W
Bit
Bit
XO3
D7
0
AMAM (2..0)
R/W
R/W
R/W
R/W
AMGC (1...0)
000
001
010
011
AMV (1,0)
Automode volume
Auto mode gain compression/limiters
AMPS – automode auto pre scale
Automode AM switching enable
Auto mode AM switching frequency selection
XO2
0
0
000
D6
RST
RST
0
AMPS
AMAME
AMAM (2…0)
XO1
D5
Name
Name
0
48 kHz/96 kHz input Fs
0.535 MHz – 0.720 MHz
0.721 MHz – 0.900 MHz
0.901 MHz – 1.100 MHz
1.101 MHz – 1.300 MHz
MVOL 0.5dB 256 steps (standard)
MVOL auto curve 30 steps
MVOL auto curve 40 steps
MVOL auto curve 50 steps
User programmable GC
AC no clipping
AC limited clipping (10%)
DRC night time listening mode
XO0
D4
0
Auto Mode Pre-Scale
0 – -18 dB used for pre-scale when AMEQ /= 00
1 – User defined pre-scale when AMEQ /= 00
0: switching frequency determined by PWMS setting
1: switching frequency determined by AMAM settings
Default: 000
AMAM2
D3
0
Mode (MVOL)
Mode
AMAM1
Description
Description
44.1 kHz/88.2 kHz input Fs
D2
0
0.535 MHz – 0.670 MHz
0.671 MHz – 0.800 MHz
0.801 MHz – 1.000 MHz
1.001 MHz – 1.180 MHz
Register descriptions
AMAM0
D1
0
AMAME
D0
0
49/72