WM8978_06 Datasheet, PDF (39/119 Pages) Wolfson Microelectronics plc – Stereo CODEC With Speaker Driver

Pre-Production
R16
7:0
Right channel
ADC Digital
Volume
ADCVOLR
[7:0]
11111111
( 0dB )
8
ADCVU
Not
latched
Table 19 ADC Digital Volume Control
WM8978
Right ADC Digital Volume Control
0000 0000 = Digital Mute
0000 0001 = -127dB
0000 0010 = -126.5dB
... 0.5dB steps up to
1111 1111 = 0dB
ADC left and ADC right volume do not
update until a 1 is written to ADCVU (in
reg 15 or 16)
w
PP Rev 3.0 May 2006
39