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WM8945ECS/R датащи(PDF) 132 Page - Wolfson Microelectronics plc

номер детали WM8945ECS/R
подробное описание детали  Mono Low-Power CODEC with Video Buffer and Touch Panel Controller
PDF  169 Pages
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производитель  WOLFSON [Wolfson Microelectronics plc]
домашняя страница  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8945ECS/R датащи(HTML) 132 Page - Wolfson Microelectronics plc

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WM8945
Production Data
w
PD, May 2011, Rev 4.1
132
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
R35 (23h)
DRC Control
7
9:8
DRC_NG_EXP
[1:0]
00
Noise Gate slope
00 = 1 (no expansion)
01 = 2
10 = 4
11 = 8
7:5
DRC_LO_COM
P[2:0]
000
Compressor slope (lower region)
000 = 1 (no compression)
001 = 1/2
010 = 1/4
011 = 1/8
100 = 0
101 = Reserved
11X = Reserved
4:0
DRC_INIT
00000
Initial value at DRC startup
00000 = 0dB
00001 = -3.75dB
… (-3.75dB steps)
11111 = -116.25dB
Register 23h
DRC Control 7
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
R36 (24h)
DRC Status
15:0
DRC_GAIN
[15:0]
0000_0000
_0000_000
0
DRC Gain value.
This is the DRC gain, expressed as a voltage multiplier.
Fixed point coding, MSB = 64.
The first 7 bits are the integer portion; the remaining
bits are the fractional part.
Register 24h
DRC Status
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
R37 (25h)
Beep
Control 1
6:3
BEEP_GAIN
[3:0]
0000
Digital Beep Volume Control
0000 = mute
0001 = -83dB
0010 = -77dB
… (6dB steps)
1111 = +1dB
2:1
BEEP_RATE
[1:0]
01
Beep Waveform Control
00 = Reserved
01 = 1kHz
10 = 2kHz
11 = 4kHz
0
BEEP_ENA
0
Digital Beep Enable
0 = Disabled
1 = Enabled
Note that the DAC and associated signal path needs to
be enabled when using the digital beep.
Register 25h
Beep Control 1



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