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STA311BTR Datasheet(PDF) 38 Page - STMicroelectronics

Part # STA311BTR
Description  Multichannel digital audio processor with FFXTM
PDF  102 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA311BTR Datasheet(HTML) 38 Page - STMicroelectronics

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Registers
STA311B
38/102
DocID024340 Rev 1
Setting the MPC bit turns on special processing that corrects the STA50x power device at
high power. This mode should lower the THD+N of a full STA50x FFX system at maximum
power output and slightly below. This mode will only be operational in OM[1,0] = 01.
8.2.5
Configuration register E (0x04)
Each individual channel output can be set to output a binary PWM stream. In this mode
output A of a channel will be considered the positive output and output B is the negative
inverse.
8.2.6
Configuration register F (0x05)
The STA311B features an internal digital high-pass filter for the purpose of AC coupling. The
purpose of this filter is to prevent DC signals from passing through an FFX amplifier. DC
signals can cause speaker damage.
If HPB = 1, then the filter that the high-pass filter utilizes is made available as user-
programmable biquad #1.
D7
D6
D5
D4
D3
D2
D1
D0
C8BO
C7BO
C6BO
C5BO
C4BO
C3BO
C2BO
C1BO
00
000
00
0
Bit
RW
RST
Name
Description
0RW
0
C1BO
Channels 1, 2, 3, 4, 5, 6, 7, and 8 binary output mode
enable bits. A setting of 0 indicates ordinary FFX
tristate output. A setting of 1 indicates binary output
mode.
1RW
0
C2BO
2RW
0
C3BO
3RW
0
C4BO
4RW
0
C5BO
5RW
0
C6BO
6RW
0
C7BO
7RW
0
C8BO
D7
D6
D5
D4
D3
D2
D1
D0
PWMS2
PWMS1
PWMS0
BQL
PSL
DEMP
DRC
HPB
00
000
00
0
Bit
RW
RST
Name
Description
0RW
0
HPB
High-pass filter bypass bit: setting of one bypasses
internal AC coupling digital high-pass filter



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