Table of Contents
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3.3 C18 OPERATING MODES................................................................................................................................................. 17
3.4 TURNING THE UNIT ON/OFF ......................................................................................................................................... 18
3.4.1 On/Off Circuitry ....................................................................................................................................................... 18
3.4.2 Turning the Unit On/Off Using the AUDIO_OUT_ONOFF Pin............................................................................. 18
3.4.3 Turning the Unit On Using the Ignition Pin ............................................................................................................. 20
3.5 SLEEP MODE OPTIONS ................................................................................................................................................... 20
3.5.1 c18 Awakens the DTE from Sleep Mode ................................................................................................................. 20
3.5.2 c18 Exiting from Sleep Mode................................................................................................................................... 21
3.6 INTERFACES...................................................................................................................................................................... 21
3.6.1 Interface Connectors................................................................................................................................................. 22
3.6.2 UART1 ..................................................................................................................................................................... 24
3.6.3 UART2 ..................................................................................................................................................................... 25
3.6.4 USB .......................................................................................................................................................................... 26
3.6.5 Removable-User Identity Module (R-UIM) Interface.............................................................................................. 26
3.7 AUDIO INTERFACES........................................................................................................................................................ 28
3.7.1 Handset Interface ...................................................................................................................................................... 29
3.7.2 Headset Interface ...................................................................................................................................................... 30
3.7.3 Hands-free Audio (Auxiliary Audio) Interface ........................................................................................................ 30
3.7.4 Analog Ground ......................................................................................................................................................... 31
3.7.5 Digital Audio Interface ............................................................................................................................................. 32
3.8 ANTENNA........................................................................................................................................................................... 32
3.8.1 RF Connectors .......................................................................................................................................................... 32
3.9 DISPLAY INTERFACE ...................................................................................................................................................... 34
3.9.1 Serial LCD ................................................................................................................................................................ 34
3.9.2 Backlights ................................................................................................................................................................. 34
3.9.3 LCD_EL_EN ............................................................................................................................................................ 36
3.9.4 Keypad...................................................................................................................................................................... 36
3.9.5 General-purpose A/D Converter - GPADC.............................................................................................................. 36
3.9.6 GPIO ......................................................................................................................................................................... 37
3.9.7 Vibrator..................................................................................................................................................................... 37
4.1 70-PIN CONNECTOR PINOUT ......................................................................................................................................... 39
4.2 36-PIN ZIF INTERFACE CONNECTOR........................................................................................................................... 43
4.3 28-PIN DIN INTERFACE CONNECTOR.......................................................................................................................... 45
5.1 MECHANICAL REQUIREMENTS ................................................................................................................................... 47
5.2 ASSEMBLY PRECAUTIONS ............................................................................................................................................ 50
6.1 CUSTOMER ASSISTANCE ............................................................................................................................................... 51
A.1 SUGGESTED MATING CONNECTORS ......................................................................................................................... 53
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98-08901C63-A
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