wm8400 Wolfson Microelectronics plc, wm8400 Datasheet - Page 68

• Manufacturer Part Number: wm8400
• Description: Wolfson Audioplustm Hi-fi Audio Codec And Power Management Unit For Mobile Multimedia
• Manufacturer: Wolfson Microelectronics plc

WM8400
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INPUT MIXER VOLUME CONTROL
The Input Mixer volume controls are described in Table 30 for the Left Channel and Table 31 for the
Right Channel. The Input PGA levels may be set to Mute, 0dB or 30dB boost. The other gain controls
provide adjustment from -12dB to +6dB in 3dB steps.
To prevent pop noise it is recommended that gain and mute controls for the input mixers are not
modified while the signal paths are active. If volume control is required on the input signal path it is
recommended that the input PGA volume controls or the ADC volume controls are used instead of
the input mixer gain registers.
PP, April 2009, Rev 3.0
Pre-Production
68