Sony Ericsson GTR-64 manual Electrical Description, Power Conector, Signal Dir Limits Description

GTR64 http://www.matrix.es/GTR64

3. ELECTRICAL DESCRIPTION

All electrical connections to the module are protected in compliance with the standard air and contact Electrostatic Discharge (ESD).

The module uses the following industry standard connectors:

•Sub-D 9 pin female (Main RS232 serial port)

•High density 15 pin (Secondary RS232 UART and extended I/O interface)

•RJ12 6-way (power supply connector)

•RJ9 4-way (handset connector)

•SIM card reader

•FME male coaxial jack (antenna connector)

3.1Power Conector

An RJ11 6-way connector, as shown and described below, serves means of supplying and controlling d.c. power to the modem.

The supply voltage, VCC, required by the modem is in the range 32V d.c. Application of the supply voltage does not switch the modem on. To do so an additional active-high control signal, TO_IN, must applied for > 0.2s.

A second active-high control signal, HR_IN, can be used to switch modem off when applied for 1 - 2 seconds, or can be used to perform hardware reset when applied for > 3.5s.

TO_IN and HR_IN are referenced to GND (pin 6 on the connector). VCC and GND are reverse polarity and overvoltage protected.

PIN:	Signal		Dir	Limits		Description
1	VCC		Input	5-32 V DC		Positive power input
2	VCHARGE		Input
3	HR_IN		Input	5 – 36 V		Active high control line used to switch off or
						reset the modem
						VIH > 5V, VIL < 2V
						Power off: 1s < t < 2s
						Hard reset: t > 3.5s
						Active high control line used to switch on the
4	TO_IN		Input	5 – 36 V		modem
						VIH > 5V, VIL < 2V
						Power on: t > 0.2s
5	3.6V out	Output				3.6V DC reference signal output. Max 75mA
6	GND		Input			Negative power (ground) input and return
						path for TO_IN, HR_IN and VCHARGE
GTR64 Integrators Manual				V.1.2	Pag. 13

Preliminary. Subject to change without prior notice