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WM8941 датащи(PDF) 28 Page - Wolfson Microelectronics plc

номер детали WM8941
подробное описание детали  Mono CODEC with Speaker Driver and Video Buffer
PDF  96 Pages
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производитель  WOLFSON [Wolfson Microelectronics plc]
домашняя страница  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8941 датащи(HTML) 28 Page - Wolfson Microelectronics plc

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WM8941
Pre Production
w
PP, Rev 3.3, December 2007
28
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
15
NF1_UP
0
Notch filter 1 update. The notch filter 1
values used internally only update when
one of the NFU bits is set high.
14
NF1_EN
0
Notch Filter 1 enable.
0=Disabled
1=Enabled
R18
Notch Filter 1A
13:0
NF1_A0
0
Notch Filter 1 a0 coefficient
15
NF1_UP
0
Notch filter 1 update. The notch filter 1
values used internally only update when
one of the NFU bits is set high.
R19
Notch Filter 1B
13:0
NF1_A1
0
Notch Filter 1 a1 coefficient
Table 16 Notch Filter 1 Function
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
15
NF2_UP
0
Notch filter 2 update. The notch filter 2
values used internally only update when
one of the NFU bits is set high.
14
NF2_EN
0
Notch Filter 2 enable.
0=Disabled
1=Enabled
R20
Notch Filter 2A
13:0
NF2_A0
0
Notch Filter 2 a0 coefficient
15
NF2_UP
0
Notch filter 2 update. The notch filter 2
values used internally only update when
one of the NFU bits is set high.
R21
Notch Filter 2B
13:0
NF2_A1
0
Notch Filter 2 a1 coefficient
Table 17 Notch Filter 2 Function
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
15
NF3_UP
0
Notch filter 3 update. The notch filter 3
values used internally only update when
one of the NFU bits is set high.
14
NF3_EN
0
Notch Filter 3 enable.
0=Disabled
1=Enabled
R22
Notch Filter 3A
13:0
NF3_A0
0
Notch Filter 3 a0 coefficient
15
NF3_UP
0
Notch filter 3 update. The notch filter 3
values used internally only update when
one of the NFU bits is set high.
14
NF3_LP
0
Notch Filter 3 mode select
0 = Notch Filter mode
1 = Low Pass Filter mode
R23
Notch Filter 3B
13:0
NF3_A1
0
Notch Filter 3 a1 coefficient
Table 18 Notch Filter 3 Function
The notch filter coefficients must be entered using a sign / magnitude notation. The MSB of
the 14-bit register word (NFx_Ax[13]) is reserved for the sign part, leaving the 13 remaining bits for
the magnitude part.



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