wm8903 Wolfson Microelectronics plc, wm8903 Datasheet - Page 62

• Manufacturer Part Number: wm8903
• Description: Ultra Low Power Codec For Portable Audio Applications
• Manufacturer: Wolfson Microelectronics plc

WM8903
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Table 40 Volume Control for HPOUTL and HPOUTR
R57 (39h)
Analogue
OUT1 Left
R58 (3Ah)
Analogue
OUT1 Right
REGISTER
ADDRESS
5:0
5:0
BIT
8
7
6
8
7
6
HPL_MUTE
HPOUTVU
HPOUTLZC
HPOUTL_VOL
[5:0]
HPR_MUTE
HPOUTVU
HPOUTRZC
HPOUTR_VOL
[5:0]
LABEL
DEFAULT
10_1101
10_1101
0
0
0
0
0
0
Left Headphone Output Mute
0 = Un-mute
1 = Mute
Headphone Output Volume Update
Writing a 1 to this bit will update
HPOUTL and HPOUTR volumes
simultaneously.
Left Headphone Output Zero Cross
Enable
0 = disabled
1 = enabled
Left Headphone Output Volume
000000 = -57dB
000001 = -56dB
(… 1dB steps)
111001 = 0dB
(… 1dB steps)
111110 = +5dB
111111 = +6dB
Right Headphone Output Mute
0 = Un-mute
1 = Mute
Headphone Output Volume Update
Writing a 1 to this bit will update
HPOUTL and HPOUTR volumes
simultaneously.
Right Headphone Output Zero
Cross Enable
0 = disabled
1 = enabled
Right Headphone Output Volume
000000 = -57dB
000001 = -56dB
(… 1dB steps)
111001 = 0dB
(… 1dB steps)
111110 = +5dB
111111 = +6dB
PP, Rev 3.1, August 2009
DESCRIPTION
Pre-Production
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