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WM8569 Datenblatt(PDF) 25 Page - Wolfson Microelectronics plc

Teilenummer WM8569
Bauteilbeschribung  24-bit, 192kHz Stereo CODEC with Volume Control
PDF  36 Pages
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Hersteller  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8569 Datenblatt(HTML) 25 Page - Wolfson Microelectronics plc

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WM8569
w
PP Rev 1.1 December 2005
25
ADC MUTE MODES
Each ADC channel also has a mute control bit, which mutes the inputs to the ADC.
REGISTER ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
0
AMUTER
0
ADC Mute Select:
0 : Normal operation
1: mute ADC right
1
AMUTEL
0
ADC Mute Select:
0 : Normal operation
1: mute ADC left
0001100
ADC Mute
2
AMUTEALL
0
ADC Mute Select:
0 : Normal operation
1: mute both ADC channels
DE-EMPHASIS MODE
Each stereo DAC channel has an individual de-emphasis control bit:
REGISTER ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
0001001
DAC De-Emphahsis
Control
6
DEEMPH
0
De-emphasis Channel Selection
Select:
0 = Not de-emphasis
1 = De-emphasis
POWERDOWN MODE AND ADC/DAC DISABLE
The ADC and DAC may be powered down individually by setting the ADCPD and DACPD disable
bits. Setting ADCPD will disable the ADC and select a low power mode. The ADC digital filters will be
reset and will reinitialise when ADCPD is unset. Setting DACPD will disable the DAC and select a low
power mode.
REGISTER ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
0
ADCPD
0
ADC Disable:
0: Active
1: Disable
0001010
Powerdown Control
1
DACPD
0
DAC Disable
MASTER POWERDOWN
This control bit powers down the references for the whole chip. Therefore for complete powerdown,
both the ADC and DACs should be powered down first before setting this bit.
REGISTER ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
0001010
Interface Control
4
PWRDNALL
0
Master Power Down Bit:
0: Not powered down
1: Powered down



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