Wolfson WM8978, Manual, Page: 92 / 119

WM8978
Production Data
w
PD, Rev 4.5, October 2011
92
REGISTER
ADDRESS
BIT LABEL DEFAULT DESCRIPTION REFER TO
2 INPPGAENL 0 Left channel input PGA enable
0 = disabled
1 = enabled Power
Management
1 ADCENR 0 Enable ADC right channel:
0 = ADC disabled
1 = ADC enabled Analogue to
Digital
Converter
(ADC)
0 ADCENL 0 Enable ADC left channel:
0 = ADC disabled
1 = ADC enabled Analogue to
Digital
Converter
(ADC)
3 (03h) 8 OUT4EN 0 OUT4 enable
0 = disabled
1 = enabled Power
Management
7 OUT3EN 0 OUT3 enable
0 = disabled
1 = enabled
Power
Management
6 LOUT2EN 0 LOUT2 enable
0 = disabled
1 = enabled
Power
Management
5 ROUT2EN 0 ROUT2 enable
0 = disabled
1 = enabled
Power
Management
3 RMIXEN 0 Right output channel mixer enable:
0 = disabled
1 = enabled Analogue
Outputs
2 LMIXEN 0 Left output channel mixer enable:
0 = disabled
1 = enabled Analogue
Outputs
1 DACENR 0 Right channel DAC enable
0 = DAC disabled
1 = DAC enabled Analogue
Outputs
0 DACENL 0 Left channel DAC enable
0 = DAC disabled
1 = DAC enabled Analogue
Outputs
4 (04h) 8 BCP 0 BCLK polarity
0=normal
1=inverted Digital Audio
Interfaces
7 LRP 0
right, left and i2s modes – LRCLK polarity
1 = invert LRCLK polarity
0 = normal LRCLK polarity
Digital Audio
Interfaces
DSP Mode – mode A/B select
1 = MSB is available o
n
1st BCLK rising edge
after LRC rising edge (mode B)
0 = MSB is available o
n
2nd BCLK rising edge
after LRC rising edge (mode A)
6:5 WL 10 Word length
00=16 bits
01=20 bits
10=24 bits
11=32 bits
Digital Audio
Interfaces