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STA381BWS 데이터시트(PDF) 35 Page - STMicroelectronics

부품명 STA381BWS
상세설명  Sound Terminal® 2.1-channel high-efficiency digital audio system
PDF  171 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA381BWS 데이터시트(HTML) 35 Page - STMicroelectronics

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STA381BWS
Device overview
Doc ID 018937 Rev 6
35/171
Figure 13.
Stereo link block diagram
4.3.9
Programming of coefficients
The coefficients are expressed in different value ranges and in decimal notation (refer to the
previous paragraphs). In order to be programmed they must be converted into a
[-1, +1) range and in hexadecimal notation (Table 11). This can be achieved with the
following procedure:
if CoeffDecValue>0
if CoeffDecValue<0
where CoeffI2CValue is the final decimal value to be converted into hexadecimal notation
while CoeffDecValue is the coefficient value (in decimal notation) to start from.
+
Output
Ch 0
Attenuator
From mapper
Ch 0 – Band 0
Attenuator
From mapper
Ch 0 – Band 1
Attenuator
Attenuator
X
X
Ch 0 – Band 1
Ch 0 – Band 0
+
Output
Ch 1
Attenuator
From mapper
Ch 1 – Band 0
Attenuator
From mapper
Ch 1 – Band 1
Attenuator
Attenuator
X
X
Ch 1 – Band 1
Ch 1 – Band 0
Max
Attenuation
Band 0
Max
Attenuation
Band 1
CoeffI2CValue
rnd CoeffDecValue 2
6
() 2
23
×
()
=
CoeffI2CValue
2
24
rnd CoeffDecValue 2
6
() 2
23
×
()
=



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