wm8976gefl-v Wolfson Microelectronics plc, wm8976gefl-v Datasheet - Page 62

• Manufacturer Part Number: wm8976gefl-v
• Description: Stereo Codec With Speaker Driver
• Manufacturer: Wolfson Microelectronics plc

WM8976
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OUTPUT PHASING
Figure 33 Output Signal Path 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 27 shows where these phase inversions can occur in the output signal path.
PD Rev 4.4 July 2009
Production Data
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