The input and output audio have different stages and each stage can be programmed to vary the
gain response characteristics. For microphones, both single-ended inputs and differential
inputs are supported. To maintain a high-quality signal, a stable bias voltage source to the
condenser microphone’s FET is provided. The DC blocking capacitors can be used at both
positive and negative sides of the input. Internally, this analog signal is converted to
16-bit, 8/16 kHz linear PCM data.
The following figure shows the audio subsystem.Figure 3-1. Audio Subsystem
Note: The AOHPL, AOHPM, AOHPR pins are not
available in the IS2083BM-2L2 variant.
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