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WM8581 датащи(PDF) 30 Page - Wolfson Microelectronics plc

номер детали WM8581
подробное описание детали  Multichannel CODEC with S/PDIF Transceiver
PDF  94 Pages
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производитель  WOLFSON [Wolfson Microelectronics plc]
домашняя страница  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8581 датащи(HTML) 30 Page - Wolfson Microelectronics plc

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WM8581
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PP Rev 1.0 March 2006
30
DAC FEATURES
DAC INPUT CONTROL
The Primary Audio Interface Receiver has a separate input pin for each stereo DAC. Any input pin
can be routed to any DAC using the DACSEL register bits.
REGISTER ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
1:0
DAC1SEL
[1:0]
00
3:2
DAC2SEL
[1:0]
01
5:4
DAC3SEL
[1:0]
10
R15
DAC CONTROL 1
0Fh
7:6
DAC4SEL
[1:0]
11
DAC digital input select
00 = DAC takes data from DIN1
01 = DAC takes data from DIN2
10 = DAC takes data from DIN3
11 = DAC takes data from DIN4
Table 16 DAC Input Select Register
DAC OVERSAMPLING CONTROL
For sampling clock ratios of 256fs to 1152fs the DACs should be programmed to operate at 128
times oversampling rate. For sampling clock ratios of 128fs and 192fs, the DACs must be
programmed to operate at 64 times oversampling rate. The DACOSR register bit selects between
128x and 64x oversampling.
REGISTER ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R12
PAIF 3
0Ch
6
DACOSR
0
DAC Oversampling Rate Control
0= 128x oversampling
1= 64x oversampling
Table 17 DAC Oversampling Register



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