wm8400 Wolfson Microelectronics plc, wm8400 Datasheet - Page 86
wm8400
Manufacturer Part Number
wm8400
Description
Wolfson Audioplustm Hi-fi Audio Codec And Power Management Unit For Mobile Multimedia
Manufacturer
Wolfson Microelectronics plc
Datasheet
1.WM8400.pdf
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Table 52 LOPGA, ROPGA, LOUT and ROUT Volume Control
R32 (20h)
R33 (21h)
R28 (1Ch)
R29 (1Dh)
REGISTER
ADDRESS
8
7
6:0
8
7
6:0
8
7
6:0
8
7
6:0
BIT
OPVU[2]
LOPGAZC
LOPGAVOL
[6:0]
OPVU[3]
ROPGAZC
ROPGAVOL
[6:0]
OPVU[0]
LOZC
LOUTVOL
[6:0]
OPVU[1]
ROZC
ROUTVOL
[6:0]
LABEL
DEFAULT
N/A
0b
79h
(0dB)
N/A
0b
79h
(0dB)
N/A
0b
00h
(mute)
N/A
0b
00h
(mute)
Output PGA Volume Update
Writing a 1 to this bit will update
LOPGA, ROPGA, LOUTVOL and
ROUTVOL volumes simultaneously.
LOPGA Zero Cross Enable
0 = Zero cross disabled
1 = Zero cross enabled
LOPGA Volume
(See Table 53 for output PGA volume
control range)
Output PGA Volume Update
Writing a 1 to this bit will update
LOPGA, ROPGA, LOUTVOL and
ROUTVOL volumes simultaneously.
ROPGA Zero Cross Enable
0 = Zero cross disabled
1 = Zero cross enabled
ROPGA Volume
(See Table 53 for output PGA volume
control range)
Output PGA Volume Update
Writing a 1 to this bit will update
LOPGA, ROPGA, LOUTVOL and
ROUTVOL volumes simultaneously.
LOUT (Left Headphone Output) Zero
Cross Enable
0 = Zero cross disabled
1 = Zero cross enabled
LOUT (Left Headphone Output)
Volume
(See Table 53 for output PGA volume
control range)
Output PGA Volume Update
Writing a 1 to this bit will update
LOPGA, ROPGA, LOUTVOL and
ROUTVOL volumes simultaneously.
ROUT (Right Headphone Output) Zero
Cross Enable
0 = Zero cross disabled
1 = Zero cross enabled
ROUT (Right Headphone Output)
Volume
(See Table 53 for output PGA volume
control range)
DESCRIPTION
PP, April 2009, Rev 3.0
Pre-Production
86
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