wm8569seds-v Wolfson Microelectronics plc, wm8569seds-v Datasheet - Page 25

• Manufacturer Part Number: wm8569seds-v
• Description: 24-bit, 192khz Stereo Codec With Volume Control
• Manufacturer: Wolfson Microelectronics plc

Production Data
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DAC OUTPUT PHASE
The DAC Phase control word determines whether the output of the DAC is non-inverted or inverted
DIGITAL ZERO CROSS-DETECT
The Digital volume control also incorporates a zero cross detect circuit which detects a transition
through the zero point before updating the digital volume control with the new volume. This is
enabled by control bit ZCD.
DAC MUTE MODES
The WM8569 has a mute for the DAC channels. Setting MUTE will apply a ‘soft’ mute to the input of
the digital filters.
Refer to Figure 9 for the plot of application and release of soft mute.
Note that all other means of muting the DAC channels: setting the PL[3:0] bits to 0, setting the
PDWN bit or setting attenuation to 0 will cause much more abrupt muting of the output.
ADC MUTE MODES
Each ADC channel also has a mute control bit, which mutes the inputs to the ADC.
DE-EMPHASIS MODE
Each stereo DAC channel has an individual de-emphasis control bit:
REGISTER ADDRESS
REGISTER ADDRESS
REGISTER ADDRESS
REGISTER ADDRESS
REGISTER ADDRESS
DAC De-Emphahsis
DAC Control
DAC Phase
DAC Mute
ADC Mute
0000011
0001001
0001001
0001100
0001001
Control
BIT
BIT
BIT
BIT
BIT
0
0
1
2
3
6
6
AMUTEALL
DMUTE
LABEL
PHASE
LABEL
LABEL
AMUTER
AMUTEL
ZCD
DEEMPH
LABEL
LABEL
DEFAULT
DEFAULT
DEFAULT
DEFAULT
DEFAULT
0
0
0
0
0
0
0
DAC Digital Volume Zero Cross
Disable:
0 = non-inverted
1 = inverted
DAC Soft Mute Select
0 = Not mute
1 = Mute
ADC Mute Select:
ADC Mute Select:
ADC Mute Select:
De-emphasis Channel Selection
Select:
0 = Not de-emphasis
1 = De-emphasis
0: Zero cross detect enabled
1: Zero cross detect disabled
0 : Normal operation
1: mute ADC right
0 : Normal operation
1: mute ADC left
0 : Normal operation
1: mute both ADC channels
DESCRIPTION
DESCRIPTION
DESCRIPTION
DESCRIPTION
DESCRIPTION
PD Rev 4.0 June 2006
WM8569
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