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NHL-4/4U
System Module and User Interface
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Glossary of Terms .......................................................................................................... 5
Introduction.................................................................................................................... 8
Electrical Modules .......................................................................................................8
Interconnection Diagram .............................................................................................8
Temperature Conditions ..............................................................................................9
Humidity ......................................................................................................................9
System Module : Baseband.......................................................................................... 10
Baseband Module, technical summary ......................................................................10
Technical Summary ...................................................................................................11
Environmental Specifications ....................................................................................11
Temperature Conditions .......................................................................................... 11
Humidity and Water Resistance.............................................................................. 12
Baseband Technical Specifications ...........................................................................13
Absolute Maximum Ratings.................................................................................... 13
DC Characteristics................................................................................................... 13
Power Distribution diagram .................................................................................... 15
Baseband External and Internal Signals and Connections ........................................16
Integrated HF Speaker............................................................................................. 17
FM Radio Interface ................................................................................................. 17
Internal Speaker....................................................................................................... 18
Integrated HF Speaker............................................................................................. 18
External Signals and Connections .............................................................................22
Keyboard (board-to-board) Connector.................................................................... 22
LCD Connector (Board to Board)........................................................................... 23
DC Connector.......................................................................................................... 24
Bottom Connector ................................................................................................... 24
SIM connector ......................................................................................................... 25
Internal Signals and Connections............................................................................ 25
Baseband Functional Description ................................................................................ 27
Modes of Operation ...................................................................................................27
No Supply................................................................................................................ 27
Back-up ................................................................................................................... 27
Acting Dead............................................................................................................. 27
Active ...................................................................................................................... 27
Sleep Mode.............................................................................................................. 28
Charging .................................................................................................................. 28
Battery ..................................................................................................................... 28
Power Up and Reset ...................................................................................................29
Power Up with PWR key ........................................................................................ 30
Power Up when Charger is connected .................................................................... 30
Power Up when Battery is connected ..................................................................... 30
RTC Alarm Power Up............................................................................................. 31
A/D Channels .............................................................................................................31
FM Radio ...................................................................................................................32
IR Module ............................................................................................................... 32
SIM Interface........................................................................................................... 32
ACI .......................................................................................................................... 33
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CCS Technical Documentation
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