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STA323WQS13TR Datasheet(PDF) 4 Page - STMicroelectronics

Part # STA323WQS13TR
Description  2.1-channel high-efficiency digital audio system with QSound QHD짰
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA323WQS13TR Datasheet(HTML) 4 Page - STMicroelectronics

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Contents
STA323WQS
4/78
7.8.3
Preset EQ settings (address 0x0D) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
7.9
Channel configuration registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
7.9.1
Channel 1 configuration (address 0x0E) . . . . . . . . . . . . . . . . . . . . . . . . 55
7.9.2
Channel 2 configuration (address 0x0F) . . . . . . . . . . . . . . . . . . . . . . . . 55
7.9.3
Channel 3 configuration (address 0x10) . . . . . . . . . . . . . . . . . . . . . . . . 55
7.10
Tone control (address 0x11) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
7.11
Dynamics control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
7.11.1
Limiter 1 attack/release threshold (address 0x12) . . . . . . . . . . . . . . . . . 57
7.11.2
Limiter 1 attack/release threshold (address 0x13) . . . . . . . . . . . . . . . . . 57
7.11.3
Limiter 2 attack/release rate (address 0x14) . . . . . . . . . . . . . . . . . . . . . 57
7.11.4
Limiter 2 attack/release threshold (address 0x15) . . . . . . . . . . . . . . . . . 58
7.11.5
Dynamics control description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
7.11.6
Anti-clipping mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
7.11.7
Dynamic range compression mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
8
User-programmable settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
8.1
EQ - biquad equation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
8.2
Pre-scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
8.3
Post-scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
8.4
Mix/bass management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
8.5
Calculating 24-bit signed fractional numbers from a dB value . . . . . . . . . 65
8.6
User defined coefficient RAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
8.6.1
Coefficient address register 1 (address 0x16) . . . . . . . . . . . . . . . . . . . . 65
8.6.2
Coefficient b1data register bits 23:16 (address 0x17) . . . . . . . . . . . . . . 65
8.6.3
Coefficient b1data register bits 15:8 (address 0x18) . . . . . . . . . . . . . . . 65
8.6.4
Coefficient b1data register bits 7:0 (address 0x19) . . . . . . . . . . . . . . . . 65
8.6.5
Coefficient b2 data register bits 23:16 (address 0x1A) . . . . . . . . . . . . . 65
8.6.6
Coefficient b2 data register bits 15:8 (address 0x1B) . . . . . . . . . . . . . . 66
8.6.7
Coefficient b2 data register bits 7:0 (address 0x1C) . . . . . . . . . . . . . . . 66
8.6.8
Coefficient a1 data register bits 23:16 (address 0x1D) . . . . . . . . . . . . . 66
8.6.9
Coefficient a1 data register bits 15:8 (address 0x1E) . . . . . . . . . . . . . . 66
8.6.10
Coefficient a1 data register bits 7:0 (address 0x1F) . . . . . . . . . . . . . . . 66
8.6.11
Coefficient a2 data register bits 23:16 (address 0x20) . . . . . . . . . . . . . 66
8.6.12
Coefficient a2 data register bits 15:8 (address 0x21) . . . . . . . . . . . . . . 66
8.6.13
Coefficient a2 data register bits 7:0 (address 0x22) . . . . . . . . . . . . . . . 67
8.6.14
Coefficient b0 data register bits 23:16 (address 0x23) . . . . . . . . . . . . . 67


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