wm8770 Wolfson Microelectronics plc, wm8770 Datasheet - Page 43

• Manufacturer Part Number: wm8770
• Description: 24-bit, 192khz 8-channel Codec With Volume Control
• Manufacturer: Wolfson Microelectronics plc

Production Data
w
10111
Master Mode
Control
11000
Powerdown
Control
11001
Attenuation
ADCL
11010
Attenuation
ADCR
11011
ADC Mux and
Powerdown
Control
REGISTER
ADDRESS
BIT
4:0
2:0
6:4
2:0
6:4
5:2
4:0
8
8
3
0
1
5
6
7
5
6
ADCRATE[2:0]
DACRATE[2:0]
ADCMUTE
DACD[3:0]
ADCOSR
RAG[4:0]
RMX[2:0]
LRBOTH
LRBOTH
LAG[4:0]
LMX[2:0]
LABEL
PWDN
AINPD
ADCD
MUTE
MUTE
MS
DEFAULT
01100
01100
(0dB)
(0dB)
1111
010
010
000
000
0
0
1
0
0
0
0
0
1
0
Master Mode MCLK:ADCLRC Ratio Select:
ADC oversample rate select
Master Mode MCLK:DACLRC Ratio Select:
Maser/Slave Interface Mode Select
0: Slave Mode – ADCLRC, DACLRC and BCLK are inputs
1: Master Mode – ADCLRC, DACLRC and BCLK are outputs
Chip Powerdown Control (works in tandem with ADCD and
DACD):
ADC Powerdown:
DAC Powerdown
Attenuation Data for Left Channel ADC Gain in 1dB steps
Mute for Left Channel ADC:
Setting LRBOTH will write the same gain value to LAG[4:0] and
RAG[4:0]
Mute for Left and Right Channel ADC:
Attenuation Data for Right Channel ADC gain in 1dB steps
Mute for Right Channel ADC:
Setting LRBOTH will write the same gain value to RAG[4:0] and
LAG[4:0]
ADC left channel input mux control bits
ADC right channel input mux control bits
Input mux and buffer powerdown
010: 256fs
011: 384fs
100: 512fs
0: 128x oversampling
1: 64x oversapmling
000: 128fs
001: 192fs
010: 256fs
011: 384fs
100: 512fs
0: All circuits running, outputs are active
1: All circuits in power save mode, outputs muted
0: ADC enabled
1: ADC disabled
0: DAC enabled
1: DAC disabled
0: Mute off
1: Mute on
0: Mute off
1: Mute on
0: Mute off
1: Mute on
0: Input mux and buffer enabled
1: Input mux and buffer powered down
DESCRIPTION
PD Rev 4.2 March 2008
WM8770
43