BR200DV/BR300DV
Service Manual
28
IC602
:
5C (controlled by MCU) (5V LDO)
IC603
:
5M 5R (controlled by MCU) (5V LDO)
IC604
:
5T (controlled by MCU) (5V LDO)
IC605
:
3.3V DC/DC
IC618
:
3.3V LDO, is the supply power of frequency synthesizer
5.8 MCU Unit:
Figure 9 Schematic Diagram for MCU Unit
MCU Unit controls the operation of every unit to realize all functions of the DR6000.
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
Содержание BR200DV
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Страница 17: ...BR200DV BR300DV Service Manual 17 Exploded View of the Parts ...
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Страница 35: ...BR200DV BR300DV Service Manual 35 Chapter 6 PCB Layout ...
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