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
Summary of Contents for BR200DV
Page 1: ...BR200DV BR300DV Service Manual 1 BR200DV BR300DV Service Manual ...
Page 17: ...BR200DV BR300DV Service Manual 17 Exploded View of the Parts ...
Page 20: ...BR200DV BR300DV Service Manual 20 BR300DV ...
Page 35: ...BR200DV BR300DV Service Manual 35 Chapter 6 PCB Layout ...
Page 38: ...MIC1 C5 D4 D5 D8 C4 C3 R1 D2 D3 D6 C7 C8 C9 J1 D1 D9 C2 D7 C6 C13 C1 ...
Page 72: ...BR200DV BR300DV Service Manual 68 Chapter 10 Block and Schematic ...