GC864-QUAD-C2/PY-C2 Hardware User Guide
1vv0300744 Rev.1 - 24/10/06
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved
page 3 of 27
Contents
1
Overview.........................................................................................................................................5
2
Mechanical Dimensions ..............................................................................................................6
3
Board to Board connector PINOUT connections ......................................................................7
4
Hardware Commands....................................................................................................................9
4.1
Turning ON the GC864-C2 .....................................................................................................9
4.2
Turning OFF the GC864-C2 .................................................................................................11
4.2.1
Hardware shutdown....................................................................................................................... 11
4.2.2
Hardware Unconditional Restart.................................................................................................... 11
5
Power Supply ...............................................................................................................................13
6
General Design Rules..................................................................................................................14
7
Antenna ........................................................................................................................................15
8
Serial Port.....................................................................................................................................16
9
VAUX1 power output ...................................................................................................................17
10
Audio Section Overview..............................................................................................................18
10.1
Audio Lines Characteristics ............................................................................................19
10.1.1
Microphone Paths Characteristic................................................................................................... 19
10.1.2
Ear Paths Characteristics .............................................................................................................. 19
10.2
Microphone Biasing..........................................................................................................20
10.2.1
On-board default biasing ............................................................................................................... 20
10.2.2
External biasing network................................................................................................................ 21
10.3
EVK2: the Evaluation Kit for Telit Modules ....................................................................21
11
SIM Design Guides ......................................................................................................................22
12
General Purpose I/O ....................................................................................................................23
13
DAC and ADC section .................................................................................................................24
14
Conformity Assessment Issues .................................................................................................25
15
SAFETY RECOMMANDATIONS ..................................................................................................26
16
Document Change Log ...............................................................................................................27
