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STA308 View Datasheet(PDF) - STMicroelectronics

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Description
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STA308 Datasheet PDF : 33 Pages
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STA308
3.27 Bass and Treble Tone Control(address 1Bh)
BIT
D7
D6
D5
D4
NAME
TTC3
TTC2
TTC1
TTC0
RST
0
1
1
1
D3
BTC3
0
D2
BTC2
1
D1
BTC1
1
D0
BTC0
1
The STA308 contains bass and treble tone control adjustments. These are selectable from +12dB to -12dB of
boost or cut. These are 1st order shelving filters with a corner frequency of 150Hz for bass and 3kHz for treble.
Any gain introduced in the tone controls will carry through to the volume and limiting block without saturation.
Table 12. Tone Control Boost/Cut as a function of BTC and TTC bits
BTC(3..0)/TTC(3..0)
0000
0001
0111
0110
0111
1000
1001
1101
1110
1111
Boost/Cut
-12dB
-12dB
-4dB
-2dB
0dB
+2dB
+4dB
+12dB
+12dB
+12dB
3.28 Coefficient Address Register (address 1Ch)
BIT
D7
D6
D5
D4
NAME
CFA7
CFA6
CFA5
CFA4
RST
0
0
0
0
D3
CFA3
0
D2
CFA2
0
D1
CFA1
0
D0
CFA0
0
3.29 Coefficient b2 Data Register Bits 23..16 (address 1Dh)
BIT
D7
D6
D5
D4
D3
NAME
C1B23
C1B22
C1B21
C1B20 C1B19
RST
0
0
0
0
0
D2
C1B18
0
D1
C1B17
0
D0
C1B16
0
3.30 Coefficient b2 Data Register Bits 15..8 (address 1Eh)
BIT
D7
D6
D5
D4
D3
NAME
C1B15
C1B14
C1B13
C1B12 C1B11
RST
0
0
0
0
0
D2
C1B10
0
D1
C1B9
0
D0
C1B8
0
3.31 Coefficient b2 Data Register Bits 7..0 (address 1Fh)
BIT
D7
D6
D5
D4
NAME
C1B7
C1B6
C1B5
C1B4
RST
0
0
0
0
D3
C1B3
0
D2
C1B2
0
D1
C1B1
0
D0
C1B0
0
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