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WM8569SEDS/V Scheda tecnica(PDF) 26 Page - Wolfson Microelectronics plc

Il numero della parte WM8569SEDS/V
Spiegazioni elettronici  24-bit, 192kHz Stereo CODEC with Volume Control
PDF  36 Pages
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Produttore elettronici  WOLFSON [Wolfson Microelectronics plc]
Homepage  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8569SEDS/V Scheda tecnica(HTML) 26 Page - Wolfson Microelectronics plc

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WM8569
Production Data
w
PD Rev 4.0 June 2006
26
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
DAC MASTER MODE SELECT
Control bit DACMS selects between audio interface Master and Slave Modes. In Master mode,
DACLRC and DACBCLK are outputs and are generated by the WM8569. In Slave mode DACLRC
and DACBCLK are inputs to WM8569.
REGISTER ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
0001010
Interface Control
5
DACMS
0
DAC Audio Interface Master/Slave
Mode Select:
0: Slave mode
1: Master mode
MASTER MODE DACLRC FREQUENCY SELECT
In Master mode the WM8569 generates DACLRC and DACBCLK. These clocks are derived from the
master clock and the ratio of DACMCLK to DACLRC is set by DACRATE.
REGISTER ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
0001010
Interface Control
8:6
DACRATE
[2:0]
010
Master Mode
MCLK:LRC Ratio Select:
000: 128fs (DAC only)
001: 192fs (DAC only)
010: 256fs
011: 384fs
100: 512fs
101: 768fs



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