Wavecom Wireless CPU Q24NG, Руководство по дизайну для клиентов

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Wireless CPU Q24NG - Customer Design Guideline
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WM_PRJ_Q24NG_PTS_002-001 June
2006
Table of Figures
Figure 1: Typical power supply voltage in GSM mode ............................. 16
Figure 2: Maximal voltage ripple (Uripp) vs Frequency in GSM & DCS, To
be confirmed ...................................................................................... 18
Figure 3: Burst simulation circuit ............................................................. 19
Figure 4: Example of SPI Bus typical implementation .............................. 22
Figure 5: Example of keyboard implementation ....................................... 23
Figure 6: Example of RS232 level shifter implementation......................... 24
Figure 7: Example of Serial Link interface implementation ....................... 25
Figure 8: Example of 3V SIM Socket implementation............................... 26
Figure 9: 1.8 V / 3 V SIM interface implementation example .................... 28
Figure 10: 3 V / 5 V SIM interface implementation example ..................... 29
Figure 11: Example of ADC input implementation.................................... 30
Figure 12: Microphone decoupling capacitor ........................................... 31
Figure 13: Example of main microphone MIC2 implementation (differential
connection) ........................................................................................ 32
Figure 14: MIC1 inputs (differential connection) ...................................... 33
Figure 15: MIC1 inputs (single-ended connection)................................... 34
Figure 16: Speaker outputs (differential mode)......................................... 35
Figure 17: Speaker outputs (single-ended connection)............................. 35
Figure 18: Example of Buzzer implementation ......................................... 36
Figure 19: Example of battery implementation......................................... 37
Figure 20: BOOT pin connection.............................................................. 39
Figure 21:
∼
RST pin connection ............................................................... 40
Figure 22: RTC Supplied by a capacitor ................................................... 42
Figure 23: RTC supplied by a super capacitor .......................................... 42
Figure 24: RTC supplied by a battery cell with regulator.......................... 43
Figure 25: RTC supplied by a non rechargeable battery ........................... 43
Figure 26: Antenna connection................................................................ 45
Figure 27: Antenna cable preparation (drawing not to scale) ................... 46
Figure 28: Maximum bulk occupied on the application board .................. 47