1-16
THEORY OF OPERATION
8.0
Controller Information
8.1
Radio Power Distribution
Figure 7-6 illustrates the DC distribution throughout the radio board. A 7.5V battery (BATT 7.5V)
supplies power directly to the electronic on/off control as UNSWB+. When the radio is turned on,
M (on/off/volume control) will trigger the electronic on/off control(momentary-on path),
then SWB+ is distributed as shown in Figure 7-6. Vdda from 3.3V Vdda regulator will then supply the
microprocessor. Data is then sent to ASFIC_CMP to turn on GCB4(DAC). GCB4 will take over the
momentary-on path within 12ms. SWB+ will continue to support the whole board until the radio is
turned off.
Radio will be turned-off on two conditions;
1.
M turned off
2.
Low battery
When low battery level is detected by the microprocessor through both conditions above, it will store
the radio personality data to EEPROM before turning off.
Figure 1-9:
DC Power Distribution Block Diagram
Control
On/Off Switch
SWB+
Fuse
Low Battery
Detect
Ant. SW
PCIC(ALC)
PA, Driver
LI Ion
3.5V
Reg.
7.5V
Audio PA
4.0V/3.3V
Vddd
Reg.
5V
ASFIC_CMP
VCOBIC
FRACTN
LVZIF
LCD
Driver
5V
RF. AMP, IF AMP
Ext. RX.
MECH.
SWB+
UNSWB+
TX.
Vdda
Reg.
Int/Ext Vdd
R1
R5
R2
R3
Vdda
Accessories
20 pin Connector
Keypad/Option Board
Prime Expansion Board
Switching
Reg.
R4
Vddd
Battery
Reg.
MCU Micro P, ROM
& EEPROM
Buffer (NU)
Led
Jumpers
Dual Vdd
Regulator
Scheme
Single Vdd
Regulator
Scheme
R1
Y
Y
R2
N
N
R3
N
Y
R4
N
N
R5
Y
N
Vdda
Y
N
SW. Reg.
N
N
Содержание GP series
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Страница 33: ...Professional Radio GP Series Keypad and Flex Service Information Issue July 2007 ...
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Страница 59: ...Professional Radio GP Series Power Distribution and Controller Service Information Issue July 2007 ...
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Страница 98: ...3 30 Controller Set 4 PCB 8416256H02 UHF Controller Audio Power Amplifier Schematic Diagram ...
Страница 100: ...3 32 Controller Set 5 PCB 8486743Z02 UHF Intentionally left blank Controller ASFIC ON_OFF Schematic Diagram ...
Страница 101: ...Controller Set 5 PCB 8486743Z02 UHF 3 33 Controller Micro Processor Schematic Diagram ...
Страница 102: ...3 34 Controller Set 5 PCB 8486743Z02 UHF Controller Interface Schematic Diagram ...
Страница 103: ...Controller Set 5 PCB 8486743Z02 UHF 3 35 Controller Audio Power Amplifier Schematic Diagram ...
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Страница 295: ...UHF PCB 8486743Z02 Schematics 3 151 UHF 403 470 MHz Synthesizer Schematic Diagram ...
Страница 296: ...3 152 UHF PCB 8486743Z02 Schematics UHF 403 470 MHz Voltage Controlled Oscillator Schematic Diagram ...
Страница 297: ...UHF PCB 8486743Z02 Schematics 3 153 UHF 403 470 MHz Transmitter Schematic Diagram ...
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