Rainbow-electronics GM862-QUAD-PY Manual de usuario Pagina 2
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Valorado. / 5. Basado en revisión del cliente
GM862-QUAD / PY Hardware User Guide
1vv0300748 Rev. 5 - 20/09/07
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 2 of 68
Contents
1 Overview ........................................................................................................................... 6
2 Dimensions ....................................................................................................................... 7
3 Interface connectors on GM862-QUAD / PY .................................................................. 8
3.1 Description .............................................................................................................................. 8
3.2 Connectors Position .............................................................................................................. 8
3.3 Board to Board Connector .................................................................................................... 9
3.3.1 Molex 52991-0508 (male) GM862 Connector PIN-OUT ................................................................10
3.3.2 Antenna Connector .........................................................................................................................12
4 Antenna ........................................................................................................................... 13
4.1 GSM Antenna Requirements ............................................................................................... 13
4.2 GSM Antenna - Installation Guidelines .............................................................................. 14
4.3 Logic level specifications .................................................................................................... 14
4.3.1 Reset signal ....................................................................................................................................15
5 Hardware Commands .................................................................................................... 16
5.1 Turning ON the GM862-QUAD / PY ..................................................................................... 16
5.2 Turning OFF the GM862-QUAD / PY ................................................................................... 18
5.2.1 Hardware Shutdown .......................................................................................................................18
5.2.2 Hardware Unconditional Restart .....................................................................................................19
6 Power Supply ................................................................................................................. 21
6.1 Power Supply Requirements ............................................................................................... 21
6.2 General Design Rules .......................................................................................................... 22
6.2.1 Electrical Design Guidelines ...........................................................................................................22
6.2.1.1 + 5V input Source Power Supply Design Guidelines .................................................................22
6.2.1.2 + 12V input Source Power Supply Design Guidelines ...............................................................24
6.2.1.3 Battery Source Power Supply Design Guidelines ......................................................................26
6.2.1.4 Battery Charge control Circuitry Design Guidelines ...................................................................26
6.2.2 Thermal Design Guidelines ............................................................................................................28
6.2.3 Power Supply PCB layout Guidelines ............................................................................................29
7 Serial Ports ..................................................................................................................... 30
7.1 Level translation ................................................................................................................... 32
7.2 5V UART level translation .................................................................................................... 34
8 Audio Section Overview ................................................................................................ 36
- Contents 2
- 1 Overview 6
- 2 Dimensions 7
- 3.1 Description 8
- 3.2 Connectors Position 8
- 3.3.2 Antenna Connector 12
- 4 Antenna 13
- For 2,0V signals: 14
- 4.3.1 Reset signal 15
- 5 Hardware Commands 16
- 5.2.1 Hardware Shutdown 18
- RESET# 19
- Unconditional Restart 19
- 6 Power Supply 21
- 6.2 General Design Rules 22
- 7 Serial Ports 30
- 7.1 Level translation 32
- 8 Audio Section Overview 36
- GM862-QUAD / 37
- GM862-QUAD / PY 37
- Audio Paths 37
- Requirements 38
- 76,820 − 39
- 76,8207,49 −=++− 40
- G−=+− 209,40 40
- 8.2 General Design Rules 41
- 8.3 Other Considerations 41
- 8.4 Microphone Biasing 42
- 8.5 Microphone Buffering 45
- 9 OUTPUT LINES (Speaker) 50
- 9.3 General Design Rules 52
- 9.4 Handset Earphone Design 53
- GM862-QUAD / P 54
- 10 General Purpose I/O 56
- 10.1 GPIO Logic levels 58
- 11 ADC section 61
- 13.2 Precautions 65
- 15 SAFETY RECOMMANDATIONS 67
- 16 Document Change Log 68
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