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STA311B Datasheet(PDF) 56 Page - STMicroelectronics

Part # STA311B
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

STA311B Datasheet(HTML) 56 Page - STMicroelectronics

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Registers
STA311B
56/102
DocID024340 Rev 1
8.2.46
Channel limiter select channels 1, 2, 3, 4 (0x2D)
8.2.47
Channel limiter select channels 5, 6, 7, 8 (0x2E)
8.2.48
Limiter 1 attack/release rate (0x2F)
8.2.49
Limiter 1 attack/release threshold (0x30)
8.2.50
Limiter 2 attack/release rate (0x31)
8.2.51
Limiter 2 attack/release threshold (0x32)
8.2.52
Bit description
The STA311B includes two independent limiter blocks. The purpose of the limiters is to
automatically reduce the dynamic range of a recording to prevent the outputs from clipping
in anti-clipping mode or to actively reduce the dynamic range for a better listening
environment such as a nighttime listening mode which is often needed for DVDs. The two
modes are selected via the DRC bit in configuration register B, bit 7 address 0x02. Each
channel can be mapped to either limiter or not mapped, meaning that channel will clip when
D7
D6
D5
D4
D3
D2
D1
D0
C4LS1
C4LS0
C3LS1
C3LS0
C2LS1
C2LS0
C1LS1
C1LS0
00
000
00
0
D7
D6
D5
D4
D3
D2
D1
D0
C8LS1
C8LS0
C7LS1
C7LS0
C6LS1
C6LS0
C5LS1
C5LS0
00
000
00
0
D7
D6
D5
D4
D3
D2
D1
D0
L1A3
L1A2
L1A1
L1A0
L1R3
L1R2
L1R1
L1R0
01
101
01
0
D7
D6
D5
D4
D3
D2
D1
D0
L1AT3
L1AT2
L1AT1
L1AT0
L1RT3
L1RT2
L1RT1
L1RT0
01
101
00
1
D7
D6
D5
D4
D3
D2
D1
D0
L2A3
L2A2
L2A1
L2A0
L2R3
L2R2
L2R1
L2R0
01
101
01
0
D7
D6
D5
D4
D3
D2
D1
D0
L2AT3
L2AT2
L2AT1
L2AT0
L2RT3
L2RT2
L2RT1
L2RT0
01
101
00
1



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