Sony 6220511 Integrators Manual

GR47/GR48

Integrator’s Manual

The GR47 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.

SAR statement: This product is intended to be used with the antenna or other radiating element at least 20cm 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 (May 2003)

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, 2003

Publication number: LZT 123 7589 R1A

Printed in UK

Contents

Overview ...................................................................................................................		5
1.	Introduction ..............................................................................................................	6
	Target Users................................................................................................................	6
	Prerequisites................................................................................................................	6
	Manual Structure.........................................................................................................	6
2.	GR47/GR48 Radio Devices ......................................................................................	7
	About the GR47/GR48 Family ...................................................................................	7
	Radio Devices in a Communication System .................................................................	7
	Features.......................................................................................................................	9
	Service and Support ...................................................................................................	12
	Precautions................................................................................................................	13
3.	Abbreviations..........................................................................................................	14
Integrating the Radio Device ................................................................................		16
4.	Mechanical Description..........................................................................................	17
	Interface Description .................................................................................................	17
	Physical Dimensions..................................................................................................	18
5.	System Connector Interface ...................................................................................	19
	Overview...................................................................................................................	19
	General Electrical and Logical Characteristics ............................................................	22
	Grounds ....................................................................................................................	23
	VCC - Regulated Power Supply Input .......................................................................	23
	Battery Charging Input (CHG_IN) ...........................................................................	24
	Turning the Radio Device ON/OFF and the External Power Signal...........................	25
	Analogue Audio ........................................................................................................	29
	PCM Digital Audio...................................................................................................	33
	Serial Data Interfaces .................................................................................................	36
	SIM Card Related Signals ..........................................................................................	40
	Service/Programming ................................................................................................	41
	Buzzer .......................................................................................................................	42
	LED ..........................................................................................................................	42
	General Purpose Digital I/O Ports.............................................................................	43
	Extended I/O capabilities ..........................................................................................	44
	General Purpose Analogue I/O Ports .........................................................................	45
	External I 2C Serial Control Bus.................................................................................	48
	TX_ON - Burst Transmission ...................................................................................	49

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	Real Time Clock........................................................................................................	49
6.	Antenna Connector.................................................................................................	51
7.	Keyboard Interface .................................................................................................	52
	IO#/KEYROW# .......................................................................................................	52
	KEYCOL# ................................................................................................................	52
8.	Hints for Integrating the Radio Device.................................................................	54
	Safety Advice and Precautions ...................................................................................	54
	Installation of the Radio Device.................................................................................	56
	Antenna ....................................................................................................................	58
9.	Embedded Applications .........................................................................................	60
	Features.....................................................................................................................	60
	Implementation.........................................................................................................	60
10.	TCP/IP Stack...........................................................................................................	62
	Implementation.........................................................................................................	62
11.	Technical Data ........................................................................................................	63
12.	Declaration of Conformity......................................................................................	65
Developer’s Kit .......................................................................................................		66
13.	Introduction to the Developer’s Kit ......................................................................	67
	Contents of the Kit....................................................................................................	67
	General Functioning of the Kit..................................................................................	68
14.	Using the Developer’s Kit......................................................................................	71
	Start up Check List....................................................................................................	72
	Developer’s Board Overlay.........................................................................................	73
	Jumpers.....................................................................................................................	74
	Switches ....................................................................................................................	78
	Headers .....................................................................................................................	79
	Connectors ................................................................................................................	80
	LED Indicators ..........................................................................................................	82
	System Connector Pin Assignments...........................................................................	83

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Overview

1. Introduction

1.1 Target Users

The GR47 and GR48 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.

1.2 Prerequisites

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 GR47/GR48 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 GR47/GR48 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.GR47/GR48 RADIO DEVICES

2.GR47/GR48 Radio Devices

2.1 About the GR47/GR48 Family

Two radio devices make up the family; GR47 and GR48, for use in the

E-GSM900/GSM1800 and GSM850/GSM1900 bands respectively.

1RWH This manual refers to the GR47 and GR48 as radio devices. If there is a difference in the functionality of the radio devices the GR47 and GR48 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.

2.2 Radio 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).

•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.

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2. GR47/GR48 RADIO DEVICES

.

MS

SIM

POWER

SUPPLY

CONNECTOR SYSTEM

GSM NETWORK

GR47 / GR48

GSM

ENGINE

EMBEDDED

APPLICATION

STATUS &

RESPONSE

DCE DTE

‘AT’ COMMAND

CONTROL

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

MS

SIM

POWER

SUPPLY

EXTERNAL

APPLICATION

MS STATUS &

RESPONSE

DTE

‘AT’ COMMAND CONTROL M

CONNECTOR SYSTEM

GSM NETWORK

GR47 / GR48

GSM

ENGINE

DCE DTE

Figure 2.2 Main Blocks in a Wireless System (external micro-controller)

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.

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2. GR47/GR48 RADIO DEVICES

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.

2.3 Features

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

GR47 and GR48 are dual band mobile stations with the characteristics shown in the tables below.

GR47		E-GSM900		GSM1800
Frequency Range (MHz)		TX: 880-915		TX: 1710-1785
		RX: 925-960		RX: 1805-1880
Channel spacing		200kHz		200kHz
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		45MHz		95MHz
Receiver sensitivity at		< –102dBm		< –102dBm
antenna connector
Transmitter output power at		Class 4		Class 1
antenna connector		2W (33dBm)		1W (30dBm)
Automatic hand-over between E-GSM 900 and GSM1800
GR48	GSM850		GSM1900
Frequency Range (MHz)	TX: 824-849		TX: 1850-1910
	RX: 869-894		RX: 1930-1990
Channel spacing	200kHz		200kHz
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)

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2. GR47/GR48 RADIO DEVICES

GR48	GSM850	GSM1900
Duplex spacing	45MHz	80MHz
Receiver sensitivity at	< –102dBm	< –102dBm
antenna connector
Transmitter output power	Class 4	Class 1
at antenna connector	2W (33dBm)	1W (30dBm)

Automatic hand-over between GSM850 and GSM1900

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 emergency calls. Multi-party, 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 GR48 also supports the Adaptive Multi Rate (AMR) type of vocoder.

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2. GR47/GR48 RADIO DEVICES

2.3.4 Data

The radio device supports the following data protocols:

•*356 *HQHUDO 3DFNHW 5DGLR 6HUYLFH

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).

•&6' &LUFXLW 6ZLWFKHG 'DWD

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

•+6&6' +LJK 6SHHG &LUFXLW 6ZLWFKHG 'DWD

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).

2.3.5 SIM Card

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

2.3.6 Power Consumption

		Idle Mode	Transmit/Operation
GSM850 and E-GSM900	Voice/CSD	<5mA	<250mA (<2A peak)
	Data (GPRS 4+1)	<5mA	<350mA (<2A peak)
GSM1800 and GSM1900	Voice/CSD	<5mA	<250mA (<1.75A peak)
	Data (GPRS 4+1)	<5mA	<350mA (<1.75A peak)

1RWH 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

•E-OTD (Supported by GR48)

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2. GR47/GR48 RADIO DEVICES

2.4 Service 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 Integrator’s Manual

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

2.4.3 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.

2.4.4 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.

2.4.5 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, GR47 or GR48;

•This Integrator’s Manual;

•Developer’s kit hardware;

•Developer’s kit accessories;

–Power supply

–RS232 cable

–Headset

–Antenna.

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2. GR47/GR48 RADIO DEVICES

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

2.5 Precautions

The radio devices are ESD protected up to 4K V contact and 8K V 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 63.

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3. 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
E-OTD	Enhanced Observed Time Difference
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 Ericssons powerful support environment
ME	Mobile Equipment
MMCX	Micro Miniature Coax
MO	Mobile Originated
MS	Mobile Station
MT	Mobile Terminated
PCM	Pulse Code Modulation

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3. ABBREVIATIONS

Abbreviation	Explanations
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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Integrating the Radio Device

4. Mechanical Description

4.1 Interface 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.

Mounting hole/ground connection

System connector

Antenna connector

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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4.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 0.05in (1.27mm) pitch type. The pins and their electrical characteristics are described in

5.System Connector Interface, page 19.

•Information about the Antenna Connector is found in

6.Antenna Connector, page 51.

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

	9.00	2.30
46.40		1.80

Figure 4.3 Dimensions of the Radio Device

Measurements are given in millimetres. See also Technical Data, page 63.

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5. System Connector Interface

5.1 Overview

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

Ground connection

Pin 59

Pin 1

Pin 60

Pin 2

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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5. SYSTEM CONNECTOR INTERFACE

1RWH 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	-	Battery	Battery charging
			charge 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 3V/5V	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 3V/5V	SIM card reset
18	SIMDATA	I/O	Digital 3V/5V	SIM card data
19	SIMCLK	O	Digital 3V/5V	SIM card clock
20	DAC	O	Analogue	Digital to analogue converter
21	IO1	I/O	Digital 2.75V	General purpose input/output 1
	KEYROW2	I		Keyboard row 2
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
	KEYROW3	I		Keyboard row 3
24	IO4	I/O	Digital 2.75V	General purpose input/output 4
	KEYROW4	I		Keyboard row 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

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5. SYSTEM CONNECTOR INTERFACE

Pin	Signal Name	Dir	Signal Type	Description
28	ADC3	I	Analogue	Analogue to digital converter 3
29	SDA	I/O	2.75V, internal	I2C data
			pull up
30	SCL	O	2.75V, internal	I2C clock
			pull up
31	BUZZER	O	Digital 2.75V	Buzzer output from radio device
32	OUT3	O	Digital 2.75V	General purpose output 3
	KEYCOL3	O		Keyboard column 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
			2.75V	2.75V at 75mA 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)
	KEYCOL2	O		Keyboard column 2
	O2	O		General purpose output 2
37	DTR	I	Digital 2.75V	Data Terminal Ready (UART1)
	KEYROW1	I		Keyboard row 1
	IN1	I		General purpose input 1
38	DCD	O	Digital 2.75V	Data Carrier Detect (UART1)
	KEYCOL1	O		Keyboard column 1
	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)
	KEYCOL4	O		Keyboard column 4
	O4	O		General purpose output 4
41	TD	I	Digital 2.75V	Transmitted Data (UART1).
				Data from DTE (host) to DCE (radio
				device).
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

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5. SYSTEM CONNECTOR INTERFACE

Pin	Signal Name	Dir	Signal Type	Description
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

5.2 General Electrical and Logical Characteristics

Many of the signals, as indicated in the table above, are high-speed 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
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

1RWH Unused pins can be left floating.

5.2.1General Protection Requirements

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

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

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

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5.SYSTEM CONNECTOR INTERFACE

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

5.3 Grounds

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.

1RWH 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.

Parameter	Limit
Imax	12.5mA

5.3.2 Digital Ground - DGND

DGND is the reference or return signal for all system interface digital signals and is also the d.c. return for SERVICE and the power supply, VCC. Connect all DGND pins together in your application in order to carry the current drawn by the radio device.

Parameter	Per Pin	Total (5 Pins)
Imax	< 6.0A	< 3.0A
Iavg	< 100mA	< 600mA

5.4 VCC - Regulated Power Supply Input

Pins	Signal	Description
1, 3, 5, 7, 9	VCC	regulated power supply input

Power is supplied to the radio device VCC pins, from an external source.

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5. SYSTEM CONNECTOR INTERFACE

Connect all VCC pins together in your application in order to carry the current drawn by the radio device.

The electrical characteristics for VCC are shown in the table below.

Parameter	Mode	Limit
Vcc supply voltage	Nominal	3.6V
	Tolerance	3.4V - 4.0V
	including ripple a
	Over-voltage limit	5.5V
	Maximum ripple	<100mV @ <200kHz;
		<20mV @ >200kHz
Maximum allowable voltage	Burst transmission	200mV
drop
Current drawn, at full TX		<500mA (average)
power
		<2A (peak)

a. Measured at system connector pins.

1RWH The radio device has no internal capacitance to supply the large current peaks during GSM burst transmission. We recommend you follow these general guidelines:

• Fit a low ESR electrolytic capacitor close to the radio device: > 1,000µF;

<100mΩ ESR.

•Make sure power supply to radio device line resistance is <200mΩ.

5.5Battery Charging Input (CHG_IN)

For battery powered applications, the radio device has a connection to aid and support battery charging. The typical design where this may be applicable is to power the radio device directly from a battery source connected to VCC (pins 1, 3, 5, 7, 9) and to provide a 5V dc power source (600mA max) to the CHG_IN connection (pin 11). The radio device can control an internal switching FET which creates a charging pathway to the battery. While power is provided at CHG_IN, the battery charge can be maintained. If the power should fail or be removed at CHG_IN, the application will be supported by the battery alone. When CHG_IN voltage returns, the battery charging and maintenance will commence once more.

&DXWLRQ Battery charging algorithms are unique to different battery types. Sony Ericsson Mobile Communications will not accept any responsibility or liability for damage, product failures, even death or injury occurring as a result of incompatible battery and charging algorithms being applied without their prior knowledge and consent.

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5. SYSTEM CONNECTOR INTERFACE

Safety considerations should be taken into account. For example, monitoring the temperature of the battery. If the temperature of the battery exceeds its specification limits, battery charging must be stopped immediately. If the battery temperature continues to rise the application should be suspended or the battery disconnected.

1RWH When charging Lithium batteries, the battery pack must have an internal protection circuit in accordance with the manufacturer’s instructions.

5.6 Turning the Radio Device ON/OFF and the External Power Signal

Turning the Radio Device On

	tO
VCC	tON
	tPULSE
ON/OFF

ON/OFF pulled		tPRST
	up internally
through 39kΩ		tVIO
VIO
			Software running…
		tCTS
CTS

	Figure 5.2	On timings and VIO performance
Symbol	Parameters	Conditions	Min.	Typ	Max	Unit
t	Reference time	VCC > 3.2V	-	-	-	-
	when VCC is	ON/OFF = VCC
	within working
	limits (1)
t	Time after t0	VCC > 3.2V	0	-	-	ms

when the ON/ OFF pulse can begin

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5. SYSTEM CONNECTOR INTERFACE

t Time after start of VCC > 3.2V - 45.0 - ms ON/OFF pulse

when VIO is active

t

t

t

Application ON/	ON/OFF held low	400	500	-	ms
OFF pulse width	until detected
	by software
Internal Power-		100	-	200	ms
on reset signal
initiates software
Time when	CTS signal	-	0.35	3.0(2)	s
software	configured for
controlled CTS	RS232 hardware
signal indicates	flow control, not
module READY	GPIO pin

(1)The GR47 measures the voltage at VCC during the power-up sequence. It is important that both VCC and ON/OFF reach a minimum of 3.2V before the ON/OFF low pulse is initiated.

(2)In SERVICE mode.

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