SONY Ericsson GM47r5, GM48r5 User Manual

GM47r5/GM48r5

Integrator’s Manual

The GM47r5 described in this manual conforms to the Radio and Telecommunications Terminal Equipment (R&TTE) directive 99/5/EC with requirements covering EMC directive 89/336/EEC and Low Voltage directive 73/23/EEC. The product fulfils the requirements according to 3GPP TS 51.010-1, EN

301 489-7 and EN60950.

FCC ID: PY76220511-BV

IC: 4170B-6220511

The GM48R5 described in this manual conforms to the Federal Communications Commission, FCC Rules Parts 22.901d and 24 E and PTCRB NAPRD.03_TC version:

V.2.7.2, 3GPP TS 51.010 Version: 3GPP TS 51.010-1 V.5.6.0

SAR statement: This product is intended to be used with the antenna or other radiating element at least 20 cm away from any part of the human body.

The information contained in this document is the proprietary information of Sony Ericsson Mobile Communications International. The contents are confidential and any disclosure to persons other than the officers, employees, agents or subcontractors of the owner or licensee of this document, without the prior written consent of

Sony Ericsson Mobile Communications International, is strictly prohibited. Further, no portion of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, without the prior written consent of Sony Ericsson Mobile Communications International, the copyright holder.

First edition (December 2004)

Sony Ericsson Mobile Communications International publishes this manual without making any warranty as to the content contained herein. Further Sony Ericsson Mobile Communications International reserves the right to make modifications, additions and deletions to this manual due to typographical errors, inaccurate information, or improvements to programs and/or equipment at any time and without notice. Such changes will, nevertheless be incorporated into new editions of this manual.

All rights reserved.

© Sony Ericsson Mobile Communications International, 2004 Publication number: LZT 123 8020 R1A

Printed in UK

Contents

Contents .....................................................................................................				3
1	Introduction ........................................................................................			6
	1.1	Target Users..............................................................................................		6
	1.2	Prerequisites .............................................................................................		6
	1.3	Manual Structure .......................................................................................		6
2	GM47r5/GM48r5 Radio Devices ..........................................................			7
	2.1	About the GM47r5/GM48r5 Family............................................................		7
	2.2	Radio Devices in a Communication System..............................................		7
	2.3	Features ....................................................................................................		9
		2.3.1	Types of Mobile Station .................................................................	9
		2.3.2	Short Message Service................................................................	10
		2.3.3	Voice Calls...................................................................................	10
		2.3.4	Data .............................................................................................	11
		2.3.5	SIM Card......................................................................................	11
		2.3.6	Power Consumption.....................................................................	11
		2.3.7	Other Features.............................................................................	12
	2.4	Service and Support ................................................................................		12
		2.4.1	Web Pages ..................................................................................	12
		2.4.2	Extranet .......................................................................................	12
		2.4.3	Integrator’s Manual ......................................................................	12
		2.4.4	AT Commands Manual ................................................................	12
		2.4.5	M2mpower Application Guide ......................................................	13
		2.4.6	Developer’s Kit.............................................................................	13
	2.5	Precautions .............................................................................................		13
	2.6	Customer support contact details ............................................................		13
3	Abbreviations ...................................................................................			15
4	Mechanical Description ....................................................................			17
	4.1	Interface Description................................................................................		17
	4.2	Physical Dimensions ...............................................................................		18
5	System Connector Interface .............................................................			20
	5.1	Overview .................................................................................................		20
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5.2	General Electrical and Logical Characteristics ........................................		23
	5.2.1	General Protection Requirements................................................	24
5.3	Grounds...................................................................................................		24
	5.3.1	Analogue Ground - AGND ...........................................................	24
	5.3.2	Digital Ground - DGND ................................................................	25
5.4	VCC - Regulated Power Supply Input .....................................................		25
5.5	Battery Charging Input (CHG_IN)(Reserved for future use) ....................		26
5.6	Turning the Radio Device ON/OFF and the External Power Signal.........		27
	5.6.1	VIO - 2.75V Supply ......................................................................	29
5.7	Analogue Audio .......................................................................................		30
	5.7.1	Audio To Mobile Station - ATMS..................................................	30
	5.7.2	Audio From Mobile Station - AFMS .............................................	31
	5.7.3	Microphone Signals .....................................................................	32
	5.7.4	Speaker Signals...........................................................................	33
5.8	PCM Digital Audio ...................................................................................		34
	5.8.1	PCM Data Format........................................................................	35
5.9	Serial Data Interfaces ..............................................................................		37

5.9.1UART1 (RS232) - RD, TD, RTS, CTS, DTR, DSR, DCD and RI .38

	5.9.2		Serial Data Signals - RD, TD .......................................................	38
	5.9.3		Control Signals - RTS, CTS, DTR, DSR, DCD, RI.......................	39
	5.9.4		UART2 - TD2, RD2......................................................................	40
	5.9.5		UART3 - TD3, RD3......................................................................	41
	5.10	SIM Card Related Signals .......................................................................		41
	5.10.1		SIM Detection - SIMPRESENCE .................................................	42
	5.11	Service/Programming ..............................................................................		43
	5.12	Buzzer	.....................................................................................................	43
	5.13	LED43
	5.14	General Purpose Digital I/O Ports ...........................................................		44
	5.15	Extended I/O capabilities.........................................................................		45
	5.15.1		LED/IO6 Capabilities....................................................................	45
	5.15.2		I#/O#............................................................................................	45
	5.15.3		UART3/IO# ..................................................................................	46
	5.15.4		IO#/ADC# ....................................................................................	46
	5.16	General Purpose Analogue I/O Ports ......................................................		46
	5.16.1		Digital to Analogue Converter - DAC ...........................................	46
	5.16.2		Analogue to Digital Converters 1, 2 and 3 - ADCx.......................	47
	5.16.3		Analogue to Digital Converters 4 and 5 - IOx/ADCx ....................	48
	5.17	External I 2C Serial Control Bus...............................................................		49
	5.18	TX_ON - Burst Transmission...................................................................		50
	5.19	Real Time Clock ......................................................................................		50
6	Antenna Connector...........................................................................			52
7	Hints for Integrating the Radio Device .............................................			53
	7.1	Safety Advice and Precautions................................................................		53
	7.1.1		General ........................................................................................	53
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	7.1.2		SIM Card......................................................................................	54
	7.1.3		Antenna .......................................................................................	54
	7.2	Installation of the Radio Device ...............................................................		55
	7.2.1		Where to Install the Radio Device................................................	55
	7.2.2		How to Install the Radio Device ...................................................	56
	7.3	Antenna ...................................................................................................		57
	7.3.1		General ........................................................................................	57
	7.3.2		Antenna Type ..............................................................................	57
	7.3.3		Antenna Placement .....................................................................	58
	7.3.4		The Antenna Cable......................................................................	58
	7.3.5		Possible Communication Disturbances........................................	58
8	TCP/IP Stack .....................................................................................			60
	8.1	Implementation........................................................................................		60
9	Technical Data ..................................................................................			61
10	Declaration of Conformity ................................................................			63
11	Introduction to the Universal Developer’s Kit ..................................			64
	11.1	Contents of the Kit ...................................................................................		64
	11.2	Assembling the Developer's Board..........................................................		65
	11.3	Mounting a GX-47/48 ..............................................................................		66
	11.4	Assembly instructions:.............................................................................		66
	11.5	System Requirements .............................................................................		67
	11.6	GX-47/48 Family; Connection .................................................................		67
12	Using the Universal Developer's Kit.................................................			69
	12.1	Gx-47/48 Setup .......................................................................................		69
	12.2	Operation Mode.......................................................................................		72
	12.3	Serial interface.........................................................................................		73
	12.4	Engine Application Port - 40-Pin Connector (X600).................................		75
	12.5	RF Interface.............................................................................................		77
	12.6	Audio Interface ........................................................................................		77
	12.7	Keypad Connector (X410) .......................................................................		78
	12.8	Flashing Firmware ...................................................................................		78
	12.9	Operation.................................................................................................		79
	12.10 Flow Control ............................................................................................			79
	12.11 Power Down ............................................................................................			79

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1 Introduction

1.1Target Users

The GM47r5 and GM48r5 radio devices are designed to be integrated into machine-to-machine or man-to-machine communications applications. They are intended to be used by manufacturers, system integrators, applications developers and developers of wireless communications equipment.

1.2Prerequisites

It is assumed that the person integrating the radio device into an application has a basic understanding of the following:

•GSM networking;

•Wireless communication and antennas (aerials);

•AT commands;

•ITU-T standard V.24/V.28;

•Micro controllers and programming;

•Electronic hardware design.

1.3Manual Structure

The manual is composed of three parts:

Part 1- Overview

This section provides a broad overview of the GM47r5/GM48r5 family and includes a list of abbreviations used in the manual.

Part 2 - Integrating the Radio Device

This section describes each of the signals available on the

GM47r5/GM48r5 radio devices, along with mechanical information. The section also provides you with design guidelines and explains what is needed to commercialise an application from a regulatory point of view.

Part 3 - Developer’s Kit

This section lists the contents of the Developer’s Kit and provides the information to setup and use the equipment.

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2 GM47r5/GM48r5 Radio Devices

2.1About the GM47r5/GM48r5 Family

Two radio devices make up the family; GM47r5 and GM48r5, for use in the E-GSM900/GSM1800 and GSM850/GSM1900 bands respectively.

Note! This manual refers to the GM47r5 and GM48r5 as radio devices. If there is a difference in the functionality of the radio devices the GM47r5 and GM48r5 information will be listed separately.

The products belong to a new generation of Sony Ericsson radio devices, and are intended to be used in machine-to- machine applications and man-to-machine applications. They are used when there is a need to send and receive data (by

SMS, CSD, HSCSD, or GPRS), and make voice calls over the GSM network.

The radio devices can either have applications embedded onto them or they can be used as the engine in an application created by the customer. The radio device can send and receive data when a script is executed, the script can be run internally from the radio device itself or from a micro-controller.

A typical application, involves a micro-controller and a radio device, in which the micro-controller sends AT commands to the radio device via an RS232 communications link.

2.2Radio Devices in a Communication System

Figures 2.1 and 2.2 illustrate the main blocks of a wireless communication system using the radio device. Figure 2.1 shows the communication system when the script is embedded on the radio device and figure 2.2 shows the communication system when a micro-controller is used. They also show the communication principles of the system and the interface between the radio device and the application. The definitions in the figures, as used elsewhere in this manual, are in accordance with the recommendations of GSM 07.07.

•The MS (mobile station) represents the radio device and

SIM card. The radio device excluding SIM card, is known as the ME (mobile equipment).

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•The DTE (data terminal equipment) is the controlling application. This can be either an external host or an internal embedded application.

•The DCE (data circuit terminating equipment) is the serial communication interface of the MS.

Figure 2.1 Main Blocks in a Wireless System (embedded application)

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Figure 2.2 Main Blocks in a Wireless System (external microcontroller)

In accordance with the recommendations of ITU-T (International Telecommunication Union - Telecommunications

Standardisation Sector) V.24, the TE communicates with the

MS over a serial interface.

The functions of the radio device follow the recommendations provided by ETSI (European Telecommunications Standards

Institute) and ITU-T.

ETSI specifies a set of AT commands for controlling the GSM element of the radio device; these commands are supplemented by Sony Ericsson specific commands.

To find out how to work with AT commands, see the AT

Commands Manual.

2.3Features

The radio device performs a set of telecom services (TS) according to GSM standard phase 2+, ETSI and ITU-T. The functions of the radio device are implemented by issuing AT commands over a serial interface.

2.3.1 Types of Mobile Station

GM47r5 and GM48r5 are dual band mobile stations with the characteristics shown in the tables below.

GM47r5	E-GSM 900	GSM 1800
Frequency Range (MHz)	TX: 880-915	TX: 1710-1785
	RX: 925-960	RX: 1805-1880
Channel spacing	200 kHz	200 kHz
Number of channels	174 carriers *8 time slots	374 carriers *8 time slots
Modulation	GMSK	GMSK
TX phase accuracy	< 5º RMS phase error (burst)	< 5º RMS phase error (burst)
Duplex spacing	45 MHz	95 MHz
Receiver sensitivity at antenna	< –102 dBm	< –102 dBm
connector
Transmitter output power at	Class 4	Class 1
antenna connector	2 W (33 dBm)	1 W (30 dBm)

Automatic hand-over between E-GSM 900 and GSM 1800

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GM48r5	GSM 850	GSM 1900
Frequency Range (MHz)	TX: 824-849	TX: 1850-1910
	RX: 869-894	RX: 1930-1990
Channel spacing	200 kHz	200 kHz
Number of channels	124 carriers *8 time slots	299 carriers *8 time slots
Modulation	GMSK	GMSK
TX Phase Accuracy	< 5º RMS phase error (burst)	< 5º RMS phase error (burst)
Duplex spacing	45 MHz	80 MHz
Receiver sensitivity at	< –102 dBm	< –102 dBm
antenna connector
Transmitter output power at	Class 4	Class 1
antenna connector	2W (33 dBm)	1 W (30 dBm)

Automatic hand-over between GSM 850 and GSM 1900

2.3.2 Short Message Service

The radio device supports the following SMS services:

•Sending; MO (mobile-originated) with both PDU (protocol data unit) and text mode supported.

•Receiving; MT (mobile-terminated) with both PDU and text mode supported.

•CBM (cell broadcast message); a service in which a message is sent to all subscribers located in one or more specific cells in the GSM network (for example, traffic reports).

•SMS STATUS REPORT according to GSM 03.40.

The maximum length of an SMS message is 160 characters when using

7-bit encoding. For 8-bit data, the maximum length is 140 characters. The radio device supports up to six concatenated messages to extend this function. Concatenation is disabled if CNMI 3,2 is set (See the AT Commands Manual for further details).

2.3.3 Voice Calls

The radio device offers the capability of MO (mobile originated) and MT (mobile terminated) voice calls, as well as supporting

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emergency calls. Multiparty, call waiting and call divert features are available. Some of these features are network-operator specific.

For the inter-connection of audio, the radio device offers both single ended and balanced analogue input and output lines.

Direct interface to the digital PCM (pulse code modulation) bus used within the radio device is available, thus by-passing the internal analogue circuitry.

The radio devices support HR, FR and EFR vocoders. The

GM48R5 also supports the Adaptive Multi Rate (AMR) type of vocoder.

2.3.4 Data

The radio device supports the following data protocols:

•GPRS (General Packet Radio Service)

The radio devices are Class B terminals. The radio devices are GPRS 4+1 enabled, which are capable of receiving at a maximum of four timeslots per frame (down link), and transmitting in one timeslot per frame (up link).

•CSD (Circuit Switched Data)

The radio devices are capable of establishing a CSD communication at 9.6 kbps.

•HSCSD (High Speed Circuit Switched Data).

The radio devices support HSCSD communication, with one timeslot per frame capacity in the up link and two timeslots per frame capacity in the down link (2+1).

2.3.5SIM Card

An external SIM card with 3 V or 5 V technology, can be connected to the radio device via its 60-pin system connector.

The unit does not need any external components to enable this.

2.3.6 Power Consumption

		Idle Mode	Transmit/Operation
GSM 850 and E-GSM 900	Voice/CSD	< 5 mA	< 250 mA (< 2 A peak)
	Data (GPRS 4+1)	< 5 mA	< 350 mA (< 2 A peak)
GSM 1800 and GSM 1900	Voice/CSD	< 5 mA	< 250 mA (<1.75 A peak)
	Data (GPRS 4+1)	< 5 mA	< 350 mA (<1.75 A peak)

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Note! The power consumption during transmission is measured at maximum transmitted power.

2.3.7 Other Features

These include:

•07.10 multiplexing.

•GPS interoperability.

•SIM application tool kit, class 2 release 96 compliant.

•Embedded application

•On board TCP/IP stack

•AMR (Supported by GM48R5)

2.4Service and Support

2.4.1 Web Pages

Visit our web site for the following information:

•where to buy radio devices or for recommendations concerning accessories and components;

•the telephone number for customer support in your region;

•FAQs (frequently asked questions).

The web site address is:

http://www.SonyEricsson.com/M2M

2.4.2 Extranet

The extranet contains all of the more in depth documentation, such as AT commands manual, software bulletins, etc. To gain access to the site please contact either your sales person or customer support.

2.4.3 Integrator’s Manual

This manual provides you with all of the information you need to integrate the radio device into your application.

2.4.4 AT Commands Manual

The AT Commands Manual provides you with all the AT commands you can use with your radio device. AT commands are in logical groups and contain the command, a description of its functionality and an example of use.

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2.4.5 M2mpower Application Guide

The M2mpower Application Guide provides you with all the information you need to build an application using the M2mpower support environment. This manual is supplied as part of the M2mpower package. There are also a number of application notes which accompany the guide showing how to use specific functionality.

2.4.6 Developer’s Kit

Sony Ericsson provides the developer’s kit to get you started quickly. The kit includes the necessary hardware required to begin the development of an application. It includes the following:

•GSM radio device, GM47r5 or GM48r5;

•This Integrator’s Manual;

•Developer’s kit hardware;

•Developer’s kit accessories;

•Power supply

•RS232 cable

•Headset

•Antenna.

All the user needs to provide, is a computer or micro-controller and the expertise to use AT commands.

2.5Precautions

The radio devices are ESD protected up to 4KV contact and

8KV air discharge. It is recommended that you follow electronic device handling precautions when working with any electronic device system to ensure no damage occurs to the host or the radio device. In “Integrating the Radio Device”, page 16 you will find more information about safety and product care. Do not exceed the environmental and electrical limits as specified in

Technical Data, page 61.

2.6Customer support contact details

To contact customer support please use the details below.

Customer Support

Sony Ericsson Mobile Communications (UK) Ltd

M2MCom

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GM47R5/GM48R5 RADIO DEVICES

1 Lakeside Road

Systems Union House

Aerospace Park

Farnborough

Hampshire

UK

GU14 6XP

E mail : [e-mail] [e-mail] [e-mail]

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ABBREVIATIONS

3 Abbreviations

Abbreviation	Explanations
AMR	Adaptive Multi Rate
ATMS	Audio to Mobile Station
AFMS	Audio from Mobile Station
CBM	Cell Broadcast Message
CBS	Cell Broadcast Service
CSD	Circuit Switched Data
DCE	Data Circuit Terminating Equipment
DK	Developer’s Kit
DTE	Data Terminal Equipment
DTMF	Dual Tone Multi Frequency
EA	Embedded Application
EFR	Enhanced Full Rate
EMC	Electro-Magnetic Compatibility
ETSI	European Telecommunication Standards Institute
FR	Full Rate
GPRS	General Packet Radio Service
GPS	Global Positioning System
GSM	Global System for Mobile Communication
HR	Half Rate
HSCSD	High Speed Circuit Switched Data
IDE	Integrated Development Environment
IP	Internet Protocol
ITU-T	International Telecommunication Union - Telecommunications
	Standardisation Sector
M2mpower	Sony Ericsson’s powerful support environment
ME	Mobile Equipment
MMCX	Micro Miniature Coax

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ABBREVIATIONS

	MO			Mobile Originated
	MS		Mobile Station
	MT			Mobile Terminated
	PCM		Pulse Code Modulation
	PDU			Protocol Data Unit
	RF			Radio Frequency
	RFU			Reserved for Future Use
	RLP			Radio Link Protocol
	RTC			Real Time Clock
	SDP		Service Discovery Protocol
	SIM			Subscriber Identity Module
	SMS			Short Message Service
	TCP			Transport Control Protocol
	UDP			User Datagram Protocol

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4 Mechanical Description

4.1Interface Description

The pictures below show the mechanical design of the radio device along with the positions of the different connectors and mounting holes. The radio device is protected with AISI 304 stainless steel covers that meet the environmental and EMC requirements.

Figure 4.1 Radio Device viewed from below

Figure 4.2 Radio Device, viewed from above

Please note the following:

•Mounting holes positioned at the corners make it possible to securely bolt the radio device into your application.

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MECHANICAL DESCRIPTION

•Keypad, display, microphone, speaker and battery are not part of the radio device.

•The SIM card is mounted in your application, external to the radio device.

•The System Connector is a 60-pin, standard 0.05 in (1.27

mm)pitch type. The pins and their electrical characteristics are described in

5 System Connector Interface, page 20.

•Information about the Antenna Connector is found in 6

Antenna Connector page 52.

4.2Physical Dimensions

2.20(4x)

2.86

4.78

3.80	2.05	7.15	2.90
		4.60

3.00

2.80

50.00

33.00

30.20

2.30

9.00

46.40

1.80

Figure 4.2 Dimensions of the Radio Device

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MECHANICAL DESCRIPTION

Measurements are given in millimetres. See also Technical

Data page 61.

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SYSTEM CONNECTOR INTERFACE

5 System Connector Interface

5.1Overview

Electrical connections to the radio device (except the antenna), are made through the System Connector Interface. The system connector is a 60pin, standard 0.05 in (1.27 mm) pitch device.

The system connector allows both board-to-board and board-to- cable connections to be made. Use a board-board connector to connect the radio device directly to a PCB, and a board-cable connector to connect the radio device via a cable.

Figure 5.1 below shows the numbering of the connector pins.

A ground connection is provided at the mounting hole next to the RF connector on the radio device as shown below. Connect this ground point to the DGND pins of the radio device by the shortest, low-impedance path possible. The purpose of this connection is to allow any antenna ESD strikes to bypass the radio device’s internal ground path.

Figure 5.1 Radio Device, viewed from underneath

The following table gives the pin assignments for the system connector interface and a short description for each signal.

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SYSTEM CONNECTOR INTERFACE

Note! Under the heading “Dir” in the table, radio device input and output signals are indicated by the letters I and O respectively.

Pin	Signal Name	Dir	Signal Type	Description
1	VCC	-	Supply	Power supply
2	DGND	-	-	Digital ground
3	VCC	-	Supply	Power supply
4	DGND	-	-	Digital ground
5	VCC	-	Supply	Power supply
6	DGND	-	-	Digital ground
7	VCC	-	Supply	Power supply
8	DGND	-	-	Digital ground
9	VCC	-	Supply	Power supply
10	DGND	-	-	Digital ground
11	CHG_IN (RFU)	-	Battery charge	Battery charging
			power
12	DGND	-	-	Digital ground
13	IO5	I/0	Digital 2.75V	General purpose input/output 5
	ADC4	I	Analogue	Analogue to digital converter 4
14	ON/OFF	I	Internal pull	Turns the radio device on and off.
			up, open drain
15	SIMVCC	-	Digital 3 V/5 V	SIM card power supply. Power output from
				radio device for SIM Card
16	SIMPRESENCE	I	Internal pull	SIM Presence
			up, open drain	A “1” indicates that the SIM is missing; a
				“0” that it is inserted
17	SIMRST	O	Digital 3 V/5 V	SIM card reset
18	SIMDATA	I/O	Digital 3 V/5 V	SIM card data
19	SIMCLK	O	Digital 3 V/5 V	SIM card clock
20	DAC	O	Analogue	Digital to analogue converter
21	IO1	I/O	Digital 2.75V	General purpose input/output 1
22	IO2	I/O	Digital 2.75V	General purpose input/output 2
	ADC5	I	Analogue	Analogue to digital converter 5
23	IO3	I/O	Digital 2.75V	General purpose input/output 3

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24	IO4	I/O	Digital 2.75V	General purpose input/output 4
25	VRTC	I	Supply 1.8V	Supply for real time clock
26	ADC1	I	Analogue	Analogue to digital converter 1
27	ADC2	I	Analogue	Analogue to digital converter 2
28	ADC3	I	Analogue	Analogue to digital converter 3
29	SDA	I/O	2.75V, internal	I 2 C data
			pull up
30	SCL	O	2.75V, internal	I 2 C clock
			pull up
31	BUZZER	O	Digital 2.75V	Buzzer output from radio device
32	OUT3	O	Digital 2.75V	General purpose output 3
	DSR	O		Data set ready (UART1)
33	LED	O	Digital 2.75V	Flashing LED
	IO6	I/O		General purpose I/O 6
34	VIO	O	Power Out	Radio device power indication. VIO is a
			2.75 V	2.75 V at 75 mA output supply that can be
				used to power external circuitry that
				interfaces to the radio device
35	TX_ON	O	Digital 2.75V	This output indicates when the GSM radio
				device is going to transmit the burst
36	RI	O	Digital 2.75V	Ring Indicator (UART1)
	O2	O		General purpose output 2
37	DTR	I	Digital 2.75V	Data Terminal Ready (UART1)
	IN1	I		General purpose input 1
38	DCD	O	Digital 2.75V	Data Carrier Detect (UART1)
	O1	O		General purpose output 1
39	RTS	I	Digital 2.75V	Request To Send (UART1)
	IO9	I/O		General purpose I/O 9
40	CTS	O	Digital 2.75V	Clear To Send (UART1)
	O4	O		General purpose output 4
41	TD	I	Digital 2.75V	Transmitted Data (UART1).
				Data from DTE (host) to DCE (radio
				device).

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42	RD	O	Digital 2.75V	Received Data (UART1).
				Data from DCE (radio device) to DTE
				(host).
43	TD3	I	Digital 2.75V	Transmitted data (UART3)
	I/O7	I/O		General purpose I/O 7
44	RD3	O	Digital 2.75V	Received data (UART3)
	I/O8	I/O		General purpose I/O 8
45	TD2	I	Digital 2.75V	Transmitted data (UART2).
				Used for flashing the memory.
46	RD2	O	Digital 2.75V	Received data (UART2).
				Used for flashing the memory.
47	PCMULD	I	Digital 2.75V	DSP PCM digital audio input
48	PCMDLD	O	Digital 2.75V	DSP PCM digital audio output
49	PCMO	O	Digital 2.75V	Codec PCM digital audio output
50	PCMI	I	Digital 2.75V	Codec PCM digital audio input
51	PCMSYNC	O	Digital 2.75V	DSP PCM frame sync
52	PCMCLK	O	Digital 2.75V	DSP PCM clock output
53	MICP	I	Analogue	Microphone Input positive
54	MICN	I	Analogue	Microphone Input negative
55	BEARP	O	Analogue	Speaker output positive
56	BEARN	O	Analogue	Speaker output negative
57	AFMS	O	Analogue	Audio output from radio device
58	SERVICE	I	2.7V	Flash programming voltage for the MS.
				Enable logger information if not flashing.
59	ATMS	I	Analogue	Audio input to radio device
60	AGND	-	Analogue	Analogue ground

5.2General Electrical and Logical Characteristics

Many of the signals, as indicated in the table above, are highspeed CMOS logic inputs or outputs powered from a 2.75V±5% internal voltage regulator, and are defined as Digital 2.75V.

Whenever a signal is defined as Digital 2.75V, the following electrical characteristics apply.

	Parameter	Min.	Max.	Units
	High Level Output Voltage (VOH), Io = –2mA	2.2	2.75	V
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SYSTEM CONNECTOR INTERFACE

Low Level Output Voltage (VOL), Io = 2mA	0	0.6	V
High Level Input Voltage (VIH)	1.93	2.75	V
Low Level Input voltage (VIL)	0	0.5	V

Note! Unused pins can be left floating.

5.2.1General Protection Requirements

•All 2.75 V digital inputs will continuously withstand and suffer no damage in the power-on or power-off condition when subjected to any voltage from - 0.5 V to 3.47 V (3.3 V + 5 %).

•All 2.75 V digital outputs will continuously withstand a short circuit to any other voltage within the range 0 V to 3 V.

•All analogue outputs will continuously withstand a short circuit to any voltage within the range 0 V to 3 V.

•The SIM output signals and the SIMVCC supply will continuously withstand a short circuit to any voltage within the range 0 V to 4.1V.

Note! Although the unit should be able to withstand the higher voltages the unit should not be driven at the levels as it will result in failures over time.

5.3Grounds

Pin	Signal	Description
2, 4, 6, 8, 10, 12	DGND	Digital ground
60	AGND	Analogue ground

There are two ground connections in the radio device, AGND (analogue ground) and DGND (digital ground). Pin assignments are shown in the table above.

Note! AGND and DGND are connected at a single point inside the radio device. They must not be joined together in your application.

5.3.1 Analogue Ground - AGND

AGND is the return signal, or analogue audio reference, for ATMS (Audio To Mobile Station) and AFMS (Audio From Mobile Station). It is connected to the DGND inside the radio device only. The application must not connect DGND and AGND.

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LZT 123 8020 R1A