WM8945
Production Data
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
SDOUT pin configuration
REFER TO
R20 (14h)
Control
Interface
2
SPI_OD
0
(applies to 4-wire mode only)
0 = SDOUT output is CMOS
1 = SDOUT output is open drain
SPI control mode select
1
0
SPI_4WIRE
AUTO_INC
1
0
0 = 3-wire using bidirectional SDA
1 = 4-wire using SDOUT
Enables address auto-increment
(applies to 2-wire / I2C mode only)
0 = Disabled
1 = Enabled
Register 14h Control Interface
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
DAC Digital Mute for All Channels:
0 = Disable Mute
R21 (15h)
DAC Control
1
8
DAC_MUTEAL
L
1
1 = Enable Mute on all channels
DAC Auto-Mute Control
0 = Disabled
4
0
DAC_AUTOMU
TE
1
0
1 = Enabled
Left DAC Invert
DACL_DATINV
0 = Left DAC output not inverted
1 = Left DAC output inverted
Register 15h DAC Control 1
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
DAC Volume Ramp control
0 = Disabled
R22 (16h)
DAC Control
2
4
DAC_VOL_RA
MP
1
1 = Enabled
Selects DAC filter characteristics
0 = Normal mode
0
DAC_SB_FLT
0
1 = Sloping stopband mode
Register 16h DAC Control 2
PD, May 2011, Rev 4.1
126
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
