User Manual

GM47/48 Technical description
BA/SEM/MS 02:0004 Rev B
23
Parameter Limit
CCO 2.0 - 2.5 V
3.8 Speaker Signals
Pin Speaker signals Dir Function
55 BEARP O Microphone Positive Output
56 BEARN O Microphone Negative Output
BEARP and BEARN are the speakers output pins. These outputs are
in differential mode.
3.9 Digital Audio
Pin PCM signal Dir Function
52 PCMCLK O PCM clock
51 PCMSYNC O PCM frame sync
47 PCMULD I PCM audio input to DSP
48 PCMDLD O PCM audio output to DSP
50 PCMI I PCM audio input to Codec
49 PCMO O PCM audio output to Codec
The digital PCM audio signals allow the connection of a digital audio
source / receiver, bypassing the analogue audio CODEC processing
functions performed within the module.
Figure 3.4 Pin connections to digital audio