RED PT500-2, Руководство по обслуживанию

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PT500-2 Service Manual
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5.7 MCU Unit:
5.9 Schematic Diagram for MCU Unit
MCU Unit controls the operation of every unit to realize all functions of the PT500-2
Communication with external PC
State data access
Control PLL for the generation, receiving and transmitting of local oscillation frequency
Access to the current channel state
Control LED status indicator
Control power supplied condition of every unit
Detect action of every function key
Produce CTCSS signal
Produce DCS signal
Produce power controlled signal
Finish CTCSS decoding
Finish DCS decoding
Squelch detection and control Control voice
prompt content
Memory (FLASH)
Channel data, voice data and other function setting data and parameter adjustment data.