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WM8978GEFL/V データシート(PDF) 42 Page - Wolfson Microelectronics plc

部品番号 WM8978GEFL/V
部品情報  STEREO CODEC WITH SPEAKER DRIVER
PDF  78 Pages
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メーカー  WOLFSON [Wolfson Microelectronics plc]
ホームページ  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8978GEFL/V データシート(HTML) 42 Page - Wolfson Microelectronics plc

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PP Rev 1.7 January 2005
42
Figure 15 Headphone Outputs LOUT1 and ROUT1
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
7
LOUT1ZC
0
Headphone volume zero cross
enable:
1 = Change gain on zero cross only
0 = Change gain immediately
6
LOUT1MUTE
0
Left headphone output mute:
0 = Normal operation
1 = Mute
5:0
LOUT1VOL
111001
Left headphone output volume:
000000 = -57dB
...
111001 = 0dB
...
111111 = +6dB
R52
LOUT1
Volume
control
8
HPVU
Not latched
LOUT1 and ROUT1 volumes do not
update until a 1 is written to HPVU
(in reg 52 or 53)
7
ROUT1ZC
0
Headphone volume zero cross
enable:
1 = Change gain on zero cross only
0 = Change gain immediately
6
ROUT1MUTE
0
Right headphone output mute:
0 = Normal operation
1 = Mute
5:0
ROUT1VOL
111001
Right headphone output volume:
000000 = -57dB
...
111001 = 0dB
...
111111 = +6dB
R53
ROUT1
Volume
control
8
HPVU
Not latched
LOUT1 and ROUT1 volumes do not
update until a 1 is written to HPVU
(in reg 52 or 53)
Table 31 OUT1 Volume Control



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