wm8961 Wolfson Microelectronics plc, wm8961 Datasheet - Page 28

• Manufacturer Part Number: wm8961
• Description: Ultra-low Power Stereo Codec With 1w Stereo Class D Speaker Drivers And Ground Referenced Headphone Drivers
• Manufacturer: Wolfson Microelectronics plc

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WM8961
Table 11 ADC Digital Volume Control
Table 12 shows all possible ADC digital volume values.
R21 (15h)
Left ADC
Digital Volume
R22 (16h)
Right ADC
Digital Volume
REGISTER
ADDRESS
7:0
8
7:0
8
BIT
LADCVOL
[7:0]
ADCVU
RADCVOL
[7:0]
ADCVU
LABEL
1100_0000
( 0dB )
0
1100_0000
( 0dB )
0
DEFAULT
ADC Left Channel Digital Volume.
FFh -> Efh: +17.625dB
EEh: +17.25dB
…… in steps of -0.375dB to
C0h : 0dB
BFh : -0.375dB
BEh: -0.75dB
….. in steps of -0.375dB to
02h: -71.25dB
01h: -71.625dB
00h: Digital Mute
(refer to Table 12 )
ADC Volume Update
0 = Store LADCVOL in intermediate
latch (no gain change)
1 = Update left and right channel
gains (left = LADCVOL, right =
intermediate latch)
ADC Right Channel Digital Volume.
FFh -> Efh: +17.625dB
EEh: +17.25dB
…… in steps of -0.375dB to
C0h : 0dB
BFh : -0.375dB
BEh: -0.75dB
….. in steps of -0.375dB to
02h: -71.25dB
01h: -71.625dB
00h: Digital Mute
(refer to Table 12 )
ADC Volume Update
0 = Store RADCVOL in intermediate
latch (no gain change)
1 = Update left and right channel
gains (left = intermediate latch, right
= RADCVOL)
DESCRIPTION
PP, August 2009, Rev 3.1
Pre-Production
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