MC55_ATC_V04.00 Page 414 of 475 3/17/06
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Microphone supply voltage control status. 
0 Supply voltage was set to a constant value. 
2 Supply voltage state is controlled by the ME and depends on parameter data
set of the selected audio mode. 
Notes
• The programmable power supply of the MICP2 line gives you greater flexibility in connecting audio accesso-
ries or using MICP2 for a variety of functions other than audio. A detailed description of the extended usage
of MICP2 can be found in [8]. 
• During an active call, users should be aware that when they switch back and forth between different audio
modes (for example handsfree on/off) the value of <MicSwitch> does not change, i.e. the microphone mode
is retained until explicitly changed. 
<MicVccState>
(num)