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STA311B датащи(PDF) 50 Page - STMicroelectronics

номер детали STA311B
подробное описание детали  Multichannel digital audio processor with FFXTM
PDF  102 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA311B датащи(HTML) 50 Page - STMicroelectronics

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STA311B
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DocID024340 Rev 1
Automatic crossover settings are provided or custom crossovers can be implemented using
the available programmable biquads.
Input channels must be mapped using the channel-mapping feature in the following manner
for bass management to be performed properly.
1: left front
2: right front
3: left rear
4: right rear
5: center
6: LFE
When AMBMXE = 1, biquad #7 on channels 1-6 are utilized for the bass-management
crossover filter, this biquad is not user-programmable in this mode. The XO settings
determine the crossover frequency used, the crossover is 2nd order for both high-pass and
low-pass with a -3 dB cross point. Higher order filters can be obtained by 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.
8.2.34
AUTO3 - AutoMode AM/pre-scale/bass management scale (0x21)
Bitfield
10
01
00
CSS - center speaker size
Off
Large
Small
RSS - rear speaker size
Off
Large
Small
Bitfield
1
0
FSS - front speaker size
Large
Small
SUB - subwoofer
On
Off
D7
D6
D5
D4
D3
D2
D1
D0
AMAM2
AMAM1
AMAM0
AMAME
MSA
AMPS
00
00
0
1
Bit
RW
RST
Name
Description
0
RW
0
AMPS
AutoMode pre-scale
1: -18 dB used for pre-scale when AMEQ /= 00
0: user-defined pre-scale when AMEQ /= 00



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