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STA381BWS Datenblatt(PDF) 58 Page - STMicroelectronics

Teilenummer STA381BWS
Bauteilbeschribung  Sound Terminal 2.1-channel high-efficiency digital audio system
PDF  174 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA381BWS Datenblatt(HTML) 58 Page - STMicroelectronics

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Register description: New Map
STA381BWS
58/174
DocID018937 Rev 7
6.11
FUNCT register (addr 0x0A)
6.11.1
Dual-band DRC
The STA381BWS device provides a dual-band DRC (B2DRC) on the left and right channels
data path, as depicted in Figure 26. Dual-band DRC is activated by setting MDRCE = 1.
Figure 26. B2DRC scheme
The low-frequency information (LFE) is extracted from the left and right channels, removing
the high frequencies using a programmable biquad filter, and then computing the difference
D7
D6
D5
D4
D3
D2
D1
D0
Reserved
CRC
APEQ
PEQ
Reserved
AMDRC
MDRCE
DRC
00100000
Table 25. FUNCT register
Bit
R/W
RST
Name
Description
6
R/W
0
CRC
0: disable CRC computation and comparison
1: enable CRC computation and comparison
5
R/W
1
APEQ
0: extended BQ disabled, 8th biquadratic filter disabled
1: extended BQ enabled, 8th biquadratic filter enabled
4
R/W
0
PEQ
0: Normal operation
1: PEQ disabled, disables all biquadratic filters
2
R/W
0
AMDRC
0: STCompressor bypassed
1: STCompressor enabled
1
R/W
0
MDRCE
0: MDRCE bypassed
1: MDRCE enabled
0
R/W
0
DRC
0: DRC disabled
1: DRC enabled
B2DRC
Hi-pass XO
filter
L
R
B2DRC
Hi-pass XO
filter
-
Channel 1
Volume
DRC 1
Channel 3
Volume
DRC 2
++
- +
Channel 3
Volume
DRC 2
Channel 2
Volume
DRC 1
+
Obsolete
Product(s)
- Obsolete
Product(s)



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