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WM8976 датащи(PDF) 59 Page - Wolfson Microelectronics plc

номер детали WM8976
подробное описание детали  Stereo CODEC With Speaker Driver
PDF  108 Pages
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производитель  WOLFSON [Wolfson Microelectronics plc]
домашняя страница  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8976 датащи(HTML) 59 Page - Wolfson Microelectronics plc

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Pre-Production
WM8976
w
PP Rev 3.0 April 2006
59
OUTPUT PHASING
The relative phases of the analogue outputs will depend upon the following factors:
1. DACPOLL and DACPOLR invert bits: Setting these bits to 1 will invert the DAC output.
2. Mixer configuration: The polarity of the signal will depend upon the route through the mixer path.
For example, DACL can be directly input to the OUT3 mixer, giving a 180° phase shift at the OUT3
mixer output. However, if DACL is input to the OUT3 mixer via the left mixer, an additional phase
shift will be introduced, giving 0° phase shift at the OUT3 mixer output.
3. Output boost set-up: When 1.5x boost is enabled on an output, no phase shift occurs. When 1.5x
boost is not enabled, a 180° phase shift occurs.
Figure 20 shows where these phase inversions can occur in the output signal path.
Figure 26 Output Signal Path Phasing



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