Production Data
WM8945
ANALOGUE INPUT SIGNAL PATH
The WM8945 has four analogue input pins, which may be selected in different configurations. The
analogue input paths can support line and microphone inputs, in single-ended or pseudo-differential
modes. Two of the input pins (AUX1 and AUX2) may be configured either as audio inputs or may be
used as inputs to the Auxiliary ADC for analogue measurement or monitoring.
The input PGA (PGA_L) is routed to the Analogue to Digital converter (ADC). There is also a bypass
path, enabling the signal to be routed directly to the output mixers.
The WM8945 input signal paths and control registers are illustrated in Figure 10.
Figure 10 Input Signal Paths
PD, May 2011, Rev 4.1
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
