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WM8944BECS/R 数据表(PDF) 122 Page - Cirrus Logic

部件名 WM8944BECS/R
功能描述  Mono Low-Power CODEC with Video Buffer
PDF  165 Pages
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制造商  CIRRUS [Cirrus Logic]
网页  http://www.cirrus.com
标志 CIRRUS - Cirrus Logic

WM8944BECS/R 数据表(HTML) 122 Page - Cirrus Logic

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WM8944B
122
Rev 4.3
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
10 = 24dB
11 = 30dB
1:0
DRC_QR_DCY
[1:0]
00
DRC Quick-release decay rate (seconds/6dB)
00 = 0.725ms
01 = 1.45ms
10 = 5.8ms
11 = reserved
Register 22h DRC Control 6
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
IInitial 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
(Read only)
15:0
DRC_GAIN
[15:0]
0000_0000
_0000_000
0
DRC Gain value (Read only).
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



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