WM8946 Datasheet, PDF (23/175 Pages) Wolfson Microelectronics plc – Stereo Low-Power CODEC with Video Buffer

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WM8946
ANALOGUE INPUT SIGNAL PATH
The WM8946 has six analogue input pins, which may be selected in many different configurations.
The analogue input paths can support line and microphone inputs, in single-ended or pseudo-
differential modes. The auxiliary input pins (AUX1 and AUX2) may be configured as inputs to the
input PGAs or to the output mixers.
The Left and Right input PGA audio channels are routed to the Analogue to Digital converters
(ADCs). There is also a bypass path for each channel, enabling the signal to be routed directly to the
output mixers.
The WM8946 input signal paths and control registers are illustrated in Figure 10.
Figure 10 Input Signal Paths
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PD, July 2012, Rev 4.3
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