STA308A STMicroelectronics, STA308A Datasheet - Page 39

• Manufacturer Part Number: STA308A
• Description: IC AUDIO PROCESSOR DGTL 64-TQFP
• Manufacturer: STMicroelectronics
• Series: DDX™r
• Type: Audio Processorr

Specifications of STA308A

• Mounting Type: Surface Mount
• Package / Case: 64-TQFP, 64-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Applications: -
• Lead Free Status / Rohs Status: Compliant

STA308A
7.2.34
When AMBMXE = 1, biquad #7 on channels 1-6 are utilized for bass-management
crossover filter, this biquad is not user programmable in this mode. The XO settings
determine the crossover frequency used, the crossover is 2
low-pass with a -3 dB cross point. Higher order filters can be obtained be programming
coefficients in other biquads if desired.
It is recommended to use settings of 120-160 Hz when using small, single driver satellite
speakers as the frequency response of these speakers normally are limited to this region.
AUTO3 - AutoMode AM/pre-Scale/bass management scale (0x21)
AMAM2
0
FSS - front speaker size
SUB - subwoofer
0
1
4
000
001
010
011
100
101
110
Bit
Bit
Bit
AMAM[2:0]
D7
RW
RW
RW
RW
RW
RW
AMAM1
0
0
0
0
D6
RST
RST
RST
0.535 MHz - 0.720 MHz
0.721 MHz - 0.900 MHz
0.901 MHz - 1.100 MHz
1.101 MHz - 1.300 MHz
1.301 MHz - 1.480 MHz
1.481 MHz - 1.600 MHz
1.601 MHz - 1.700 MHz
AMPS
MSA
AMAME
AMAM0
0
48 kHz/96 kHz input Fs
Bitfield
D5
Name
Name
Name
AMAME
0
D4
AutoMode pre-scale
0: -18 dB used for pre-scale when AMEQ = 00
1: user defined pre-scale when AMEQ = 00
Bass management mix scale adjustment
0: -12 dB scaling on satellite channels in Config #1
1: no scaling on satellite channels in Config #1
AutoMode AM enable
0: switching frequency determined by PWMS settings
1: switching frequency determined by AMAM settings
D3
0.535 MHz - 0.670 MHz
0.671 MHz - 0.800 MHz
0.801 MHz - 1.000 MHz
1.001 MHz - 1.180 MHz
1.181 MHz - 1.340 MHz
1.341 MHz - 1.500 MHz
1.501 MHz - 1.700 MHz
nd
Description
Description
Description
Large
On
D2
44.1 / 88.2 kHz input Fs
order for both high-pass and
1
MSA
0
D1
Small
Off
AMPS
0
Registers
0
D0
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