User's Manual

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7.2 Stereo Audio CODEC Interface
The main features of the interface are:
 Stereo and mono analogue input for voice band and audio band
 Stereo and mono analogue output for voice band and audio band
 Support for stereo digital audio bus standards such as I
2
S
 Support for IEC-60958 standard stereo digital audio bus standards, e.g. S/PDIF and
AES3/EBU
 Support for PCM interfaces including PCM master CODECs that require an external
system clock
Figure 13: Stereo CODEC audio input and output stages
The stereo audio CODEC uses a fully differential architecture in the analogue signal path, which results
in low noise sensitivity and good power supply rejection while effectively doubling the signal amplitude.
It operates from a single power-supply of 1.5V and uses a minimum of external components.