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| GE864 Hardware User Guide |
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| 1vv0300694 Rev.10 - 10/06/08 |
9.2 | OUTPUT LINES (Speaker) | 42 | |
9.2.1 | Short description | 42 | |
9.2.2 | Output Lines Characteristics | 43 | |
9.3 | SIM Holder Implementation | 43 | |
10 General Purpose I/O | 44 | ||
10.1 | GPIO Logic levels | 46 | |
10.2 | Using a GPIO Pad as INPUT | 47 | |
10.3 | Using a GPIO Pad as OUTPUT | 47 | |
10.4 | Using the RF Transmission Control GPIO4 | 48 | |
10.5 | Using the RFTXMON Output GPIO5 | 48 | |
10.6 | Using the Alarm Output GPIO6 | 48 | |
10.7 | Using the Buzzer Output GPIO7 | 49 | |
10.8 | Magnetic Buzzer Concepts | 50 | |
10.8.1 | Short Description | 50 | |
10.8.2 | Frequency Behaviour | 51 | |
10.8.3 | Power Supply Influence | 51 | |
10.8.4 | Warning | 51 | |
10.8.5 | Working Current Influence | 51 | |
10.9 | Using the Temperature Monitor Function | 52 | |
10.9.1 | Short Description | 52 | |
10.9.2 | Allowed GPIO | 52 | |
10.10 Indication of network service availability | 53 | ||
10.11 |
| RTC Bypass out | 54 |
10.12 |
| VAUX1 power output | 54 |
11 DAC and ADC section | 55 | ||
11.1 | DAC Converter | 55 | |
11.1.1 | Description | 55 | |
11.1.2 | Enabling DAC | 56 | |
11.1.3 | Low Pass Filter Example | 56 | |
11.2 | ADC Converter | 57 | |
11.2.1 | Description | 57 | |
11.2.2 | Using ADC Converter | 57 | |
12 Mounting the GE864 on your Board | 58 | ||
12.1 | General | 58 | |
12.1.1 | Module finishing & dimensions | 58 | |
12.1.2 | Recommended foot print for the application (GE864) | 59 | |
12.1.3 | Suggested Inhibit Area | 60 | |
12.1.4 | Debug of the GE864 in production | 61 | |
12.1.5 | Stencil | 61 | |
12.1.6 | PCB pad design | 62 | |
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved | page 4 of 69 |
