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WM8946ECS/R 데이터시트(PDF) 26 Page - Wolfson Microelectronics plc

부품명 WM8946ECS/R
상세설명  Stereo Low-Power CODEC with Video Buffer
PDF  175 Pages
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제조업체  WOLFSON [Wolfson Microelectronics plc]
홈페이지  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8946ECS/R 데이터시트(HTML) 26 Page - Wolfson Microelectronics plc

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WM8946
Production Data
w
PD, July 2012, Rev 4.3
26
The Input PGA volume control register fields are described in Table 4.
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R40 (28h)
Left INP PGA
gain ctrl
8
PGA_VU
0
Input PGA Volume Update
Writing a 1 to this bit will cause the
Left and Right Input PGA volumes
to be updated simultaneously.
7
PGAL_ZC
0
Left Input PGA Zero Cross Detector
0 = Change gain immediately
1 = Change gain on zero cross only
6
PGAL_MUTE
1
Left Input PGA Mute
0 = Disable Mute
1 = Enable Mute
5:0
PGAL_VOL [5:0]
01_0000
(0dB)
Left Input PGA Volume
00_0000 = -12dB
00_0001 = -11.25dB
…
01_0000 = 0dB
...
11_1111 = +35.25
(See Table 5 for volume range)
R41 (29h)
Right INP PGA
gain ctrl
8
PGA_VU
0
Input PGA Volume Update
Writing a 1 to this bit will cause the
Left and Right Input PGA volumes
to be updated simultaneously.
7
PGAR_ZC
0
Right Input PGA Zero Cross
Detector
0 = Change gain immediately
1 = Change gain on zero cross only
6
PGAR_MUTE
1
Right Input PGA Mute
0 = Disable Mute
1 = Enable Mute
5:0
PGAR_VOL
[5:0]
01_0000
(0dB)
Right Input PGA Volume
00_0000 = -12dB
00_0001 = -11.25dB
…
01_0000 = 0dB
...
11_1111 = +35.25
(See Table 5 for volume range)
Table 4 Input PGA Volume Control



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