Telit Wireless Solutions GE864 10.2, 10.3, 10.4, 10.5, 10.6, 10.7, 10.8, 10.9, 10.11, 10.12

			GE864 Hardware User Guide
			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