User's Manual

CE910 Family Hardware User Guide
1vv0301010 Rev.11 – 2015-10-27
Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.
Page 6 of 75
5.3.5. Thermal Design Guidelines ....................................... 35
5.3.6. Power Supply PCB layout Guidelines .............................. 36
6. Antenna .......................................................... 38
6.1. CDMA Antenna Requirements ..................................... 38
6.2. CDMA antenna – PCB line Guidelines ............................ 39
6.3. CDMA Antenna installation Guidelines ............................ 39
7. USB Port ......................................................... 41
8. Serial Port ...................................................... 42
8.1. Modem Serial Port 1 ........................................... 43
8.2. Modem Serial Port 2 ........................................... 45
8.3. RS232 Level Translation ....................................... 46
9. Audio Section Overview ........................................... 47
9.1. Analog Audio Interface(AVI) ................................... 47
9.1.1. MIC Connection .................................................. 48
9.1.2. LIN-IN Connection ............................................... 49
9.1.3. EAR Connection .................................................. 50
9.2. Digital Voice Interface(DVI) .................................. 51
9.2.1. CODEC Example ................................................... 51
10. General Purpose I/O .............................................. 52
10.1. Logic Level Specification ................................... 53
10.2. Using a GPIO Pad as Input ................................... 53
10.3. Using a GPIO Pad as Output .................................. 54
10.4. Indication of Network Service Availability .................. 54
10.5. RTC Bypass Output ........................................... 55
10.6. VAUX/PWRMON Power Output .................................... 55
11. ADC section ...................................................... 57
11.1. Description ................................................. 57
11.2. Using ADC Converter ......................................... 57
12. Test Point ....................................................... 58
13. Mounting CE910 on the Application ................................ 59