Motorola EP450 Service Manual page 168

INDEX
A
Antenna Matching Network, UHF 403-440 MHz Theory Of Operation ...............................7-4
Antenna Matching Network, UHF 438-470 MHz Theory Of Operation ...............................8-4
Antenna Matching Network, UHF 465-495 MHz Theory Of Operation ...............................9-4
Antenna Matching Network, VHF 146-174 MHz Theory Of Operation................................4-4
Antenna Switch, UHF 403-440 MHz Theory Of Operation..................................................7-3
Antenna Switch, UHF 438-470 MHz Theory Of Operation..................................................8-3
Antenna Switch, UHF 465-495 MHz Theory Of Operation..................................................9-3
Antenna Switch, VHF 146-174 MHz Theory Of Operation..................................................4-3
Audio Circuitry Theory of Operation ....................................................................................3-4
Audio Power Amplifier Theory of Operation ........................................................................3-5
B
Battery Gauge Controller Theory of Operation....................................................................3-4
Boot Mode Control Controller Theory of Operation.............................................................3-4
C
Computer Software Copyrights .............................................................................................. ii
Control and Indicator Interface Controller Theory of Operation ..........................................3-2
Controller Theory of Operation............................................................................................3-1
Controller.......................................................................................................................3-1
Microprocessor Circuitry..........................................................................................3-1
Memory Usage ..................................................................................................3-2
Control and Indicator Interface ..........................................................................3-2
Serial Bus Control of Circuit Blocks ..................................................................3-2
Interface to RSS Programming .........................................................................3-3
Storage of Customer-Specific Information.........................................................3-3
Sensing of Externally-Connected Accessories..................................................3-3
Microprocessor Power-Up, Power-Down and Reset Routine............................3-3
Boot Mode Control.............................................................................................3-4
Microprocessor 7.3975 MHz Clock....................................................................3-4
Battery Gauge ...................................................................................................3-4
Audio Circuitry ...............................................................................................................3-4
Transmit and Receive Low-Level Audio Circuitry ..............................................3-4
Audio Power Amplifier .......................................................................................3-5
Internal Microphone Audio Voice Path ..............................................................3-5
PTT Circuits .......................................................................................................3-6
VOX Operation ..................................................................................................3-6
Programming and Flashing Through Microphone Jack .....................................3-6
D
DC Power Distribution Theory of Operation ........................................................................2-1
DC Regulation and Distribution Theory of Operation ..........................................................2-1
Disclaimer............................................................................................................................... ii
Document Copyrights............................................................................................................. ii