Telit Wireless Solutions GE863-QUAD - Manual (Page 2)

GE863-QUAD
GE863-PY
1vv0300715 Rev. 1 - 19/09/06
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Right reserved page 2 of 79
Contents
1 Overview ...........................................................................................................................6
2 GE863 module connections ............................................................................................7
2.1 PIN-OUT...................................................................................................................................7
2.2 PINS LAYOUT........................................................................................................................10
3 Hardware Commands ....................................................................................................11
3.1 Turning ON the GE863-QUAD/PY .........................................................................................11
3.2 Turning OFF the GE863-QUAD/PY........................................................................................12
3.2.1 Hardware shutdown....................................................................................................................... 13
3.3 Hardware Unconditional Reboot.............................................................................................13
4 Power Supply .................................................................................................................15
4.1 Power Supply Requirements ..................................................................................................15
4.2 General Design Rules ............................................................................................................16
4.2.1 Electrical design Guidelines........................................................................................................... 16
4.2.1.1 + 5V input Source Power Supply Design Guidelines ................................................................ 16
4.2.1.2 + 12V input Source Power Supply Design Guidelines .............................................................. 17
4.2.1.3 Battery Source Power Supply Design Guidelines ..................................................................... 18
4.2.1.4 Battery Charge control Circuitry Design Guidelines .................................................................. 19
4.2.2 Thermal Design Guidelines ........................................................................................................... 20
4.2.3 Power Supply PCB layout Guidelines ........................................................................................... 21
5 Antenna...........................................................................................................................22
5.1 GSM Antenna Requirements..................................................................................................22
5.2 GSM Antenna - PCB line Guidelines......................................................................................23
5.3 GSM Antenna - installation Guidelines...................................................................................23
6 Serial Ports .....................................................................................................................23
6.1 MODEM SERIAL PORT .........................................................................................................24
6.2 MODEM SERIAL PORT 2 (Python Debug)............................................................................26
6.3 RS232 level translation...........................................................................................................26
6.4 5V UART level translation ......................................................................................................28
7 Audio Section Overview ................................................................................................30
7.1 Microphone Paths Characteristic and Requirements .............................................................32
7.2 General Design Rules ............................................................................................................35
7.3 Other considerations ..............................................................................................................35