Sony Ericsson GR 47 Design Manuallines
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Sony Ericsson GR 47 Design Manuallines

Sony Ericsson GR 47 Design Manuallines

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GR 47/GR 48
Design Guidelines

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  • Page 1 GR 47/GR 48 Design Guidelines...
  • Page 2 The product described in this manual conforms to the TTE directive 91/263/EEC and EMC directive 89/336/EEC. The product fulfils the requirements according to ETS 300 342-1. The information contained in this document is the proprietary information of Sony Ericsson Mobile Communications. 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, is strictly prohibited.

  • Page 3: Table Of Contents

    GR47/48 Design Guidelines Contents INTRODUCTION ........................5 .........................5 VERVIEW ........................5 RECAUTIONS .........................5 BBREVIATIONS MECHANICAL INTEGRATION....................7 ......................7 HYSICAL IMENSIONS ELECTRICAL INTEGRATION ....................8 ..........................8 ENERAL ........................9 ROUNDING 3.2.1 The Analogue Ground....................9 3.2.2 The Digital Ground (DGND) ..................9 ..................10 XTERNAL UPPLY TO ODULE 3.3.1 Power Supply (VCC) ....................10 3.3.2 General Recommendations ...................11...
  • Page 4 GR47/48 Design Guidelines 6.7.2 GR47 software updates ..................28 APPENDIX I - TECHNICAL DATA .....................29 APPENDIX II – GR47/GR48PIN OUT ..................31 APPENDIX III GSM TRANSMIT WAVEFORM CHARACTERISTICS........34 BA/SEM/MS 03:0015 Rev A LZT 123 7596...

  • Page 5: Introduction

    900/1800 MHz and 850/1900 MHz GSM bands respectively. This document should be used in conjunction with either the GR 47/48 Integrators Manual or GR47/GR48Technical Description and is intended to aid the system integrator both designing the module into their application and gaining the correct approvals.
  • Page 6 GR47/48 Design Guidelines Mobile Equipment Mobile Originated Mobile Station Mobile Terminated Pulse Code Modulation Protocol Data Unit Radio Link Protocol Radio Frequency Real Time Clock Service Discovery Protocol Short Message Service Subscriber Identity Module To Be Defined BA/SEM/MS 03:0015 Rev A LZT 123 7596...

  • Page 7: Mechanical Integration

    GR47/48 Design Guidelines Mechanical Integration The GR 47/48 is protected with AISI 304 Stainless Steel covers suitable to fulfil the environmental and EMC requirements. The position of the different connectors and mounting holes are shown in figure 2.1 with dimensions.

  • Page 8: Electrical Integration

    The connector allows the following connections: board to board. board to cable. See section 5 for suppliers and part numbers. The figure 3.1 below indicates the pin numbering scheme. Figure 3.1 GR 47/48. View from the underside BA/SEM/MS 03:0015 Rev A LZT 123 7596...

  • Page 9: Grounding

    Digital Ground AGND Analogue Ground There are two ground signals in GR 47/48, Analogue Ground (AGND) and Digital Ground (DGND). The analogue Ground is connected to pin number 60, and the Digital Ground is connected to the System Connector Interface through pin numbers 2, 4, 6, 8, 10 and 12.

  • Page 10: External Supply To Module

    GR47/48 Design Guidelines 3.3 External Supply to Module Pins Name Description 1, 3, 5, 7, 9, 11 Regulated Power Supply Connect all of the pins together in the application in order to carry the current drawn by the module. 3.3.1 Power Supply (VCC) The VCC supplies the module with external power.

  • Page 11: General Recommendations

    GR47/48 Design Guidelines GR 47/48 does not have internal capacitance to supply the large current peaks during GSM transmission. Therefore on burst transmission the application DC source is responsible for providing the appropriate current. Recommendations to the design of power supplies are given in the following paragraphs.
  • Page 12 GR47/48 Design Guidelines 120mV 2.0 Amp 1000 F 1.5 Amp 170mV *2500 F 1.0 Amp 160mV *6000 F 0.5 Amp 165mV *10000 F Table 3.2 ESR = 50m BULK = 100m LINE Transmit Burst PSU LIMIT CBULK (min) Vcc Dip (approx) 200mV 2.0 Amp 1500 F...

  • Page 13: On/Off Signal

    GR47/48 Design Guidelines 3.3.3 On/Off signal The on/off line should be attached to an open collector drive or momentary contact switch otherwise the module alarm clock feature will not operate. The on/off line is wired Red internally with the alarm wake up signal.

  • Page 14: Sim Connections

    GR47/48 Design Guidelines 3.4 SIM connections All track lengths between the SIM card and the module must be kept below 15cm. This is due to the voltage drop/capacitance associated with the extra track length and it has type approval issues as it will affect timing.

  • Page 15: Audio Connections

    GR47/48 Design Guidelines 3.5 Audio Connections Audio connections for both of the analogue paths are shown below. 3.5.1 Analogue Audio Signal Dir. Description AFMS Audio From Mobile Station ATMS Audio To Mobile Station AGND Ground (return) for analogue audio ATMS and AFMS are the audio input and output for the module. Figure 3.3 shows the connection of the analogue audio signals ATMS and AFMS to the CODEC.

  • Page 16: Advanced Portable Hands Free Functionality

    GR47/48 Design Guidelines Portable Hands Free - This state activates a different amplification factor in the GR47 and activates a microphone bias level of 2V in ATMS when a call is in progress. This is the default state at power-on. Audio Circuit Electrical characteristics All sources must be AC-coupled except the Portable HandsFree microphone, which shall be DC-coupled in order to supply DC current...

  • Page 17: Rf And Antenna Integration

    GR47/48 Design Guidelines It is also used as an ear-piece driver for the Portable Hands Free accessory. Zout (0.3 – 3.5 kHz) Output capacitance 2.2 F Levels > 2.4 Vpp [TBC] Drive capability into 5 k (0.3 – 3.5 kHz) (THD<5%) >...

  • Page 18: Interfacing To A 3.3V Processor

    GR47/48 Design Guidelines 3.7 Interfacing to a 3.3V Processor CMOS gates are used within the GR47 and therefore the output drive is virtually rail to rail for small loads. So direct interface from the GR47 to low voltage logic gates is possible. Expect V = 2.5V for small loads (100 A).

  • Page 19: Software Download And Logging Circuitry

    GR47/48 Design Guidelines Many level shifting I/C’s are also available which would perform a similar function as described above i.e. a suitable device is a Max3372 for level shifting. Note : ESD protection is not a requirement for the level shifter. 3.8 Software download and logging circuitry Below the circuitry is shown which allows software download and logging to be performed.

  • Page 20: Battery Charging

    GR47/48 Design Guidelines 3.9 Battery charging For battery powered applications, the GR47 has a connection to aid and support battery charging. The typical design where this may be applicable is for the customer to power the module 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).

  • Page 21: Developers Board

    GR47/48 Design Guidelines 4 Developers Board The developers board is the reference design against which the module has been type approved, the circuit diagram for this is available upon request from customer support 4.1 Power Circuit A 3A simple switcher step down voltage regulator has been used to produce the module Vcc.

  • Page 22: Emc

    GR47/48 Design Guidelines 4.5 EMC When using the original developers kit (type number 4000005) the circuit ground is bonded to the metal chassis of the developers kit box, all signal connections are filtered via ferrite chokes. The new developers kit (type number 4000006) has reduced protection but is enough to pass all EMC testing.

  • Page 23: Part Numbers

    GR47/48 Design Guidelines 5 Part numbers 5.1 System connector A connector that can be used to interface to the system connector is the Samtech FLE or SFMC or CLP series, the female part number is CLP- 130-02-F-D. This connector or an equivalent can be sourced from imperial connectors below, again this company is just an example of one supplier.

  • Page 24: Ims Connectors

    GR47/48 Design Guidelines System connector For the system connector follow http://www.imperial-connect.co.uk/products/prodprofile127.html click on ITRQPGA thumbnail. 5.4.2 IMS connectors Connector cables from MMCX to SMA can be ordered from this supplier normally with a 2-3 week lead time. BA/SEM/MS 03:0015 Rev A LZT 123 7596...

  • Page 25: Type Approval

    After that, all documentation together with the test reports and certificates of the application should be sent to Sony Ericsson in order to register the application to the accessories list for the approval of the module, this will aid the approval of the application world wide.

  • Page 26: Power Supply

    GR47/48 Design Guidelines 6.2 Power supply It is essential the application power supply is designed to comply with the specification in section 3. This will be sufficient to pass type approval, no RF testing will be required if it meets these specifications. BA/SEM/MS 03:0015 Rev A LZT 123 7596...

  • Page 27: Sim Testing

    GR47/48 Design Guidelines 6.3 SIM Testing SIM electrical testing does need to be carried out since the electrical paths from which it was originally approved against (developers kit board) have changed. This will typically take around 3 hours in a test house.

  • Page 28: Gr48

    If the GR47 software is updated there should be no further action required by the system integrator as accessories lists are generally carried across between TA certificates and any software supplied by Sony Ericsson will be fully Type Approved. BA/SEM/MS 03:0015 Rev A LZT 123 7596...

  • Page 29: Appendix I - Technical Data

    Idle mode: = 5 mA Switched off: < 100 A Radio specifications Frequency range: GR 47: EGSM 900 MHz and 1800 MHz (Dual Band) GR 48: GSM 850 MHz and 1900 MHz (Dual Band) Maximum RF output power: 2 W / 1 W...
  • Page 30 GR47/48 Design Guidelines Shock response spectrum II, peak acceleration: - 3 shocks in each axis and direction: 1000 m/s2, 6 ms Bump: Acceleration 250 m/s2 Free fall transportation: 1.2 m Rolling pitching transportation: Angle: ±35 degrees, period: 8s Static load: 10 kPa Low air pressure/high air pressure: 70 kPa / 106 kPa...

  • Page 31: Appendix Ii - Gr47/Gr48Pin Out

    GR47/48 Design Guidelines Appendix II – GR47/GR48 Pin out Signal Name Signal Type Description Supply Power Supply DGND Digital Ground Supply Power Supply DGND Digital Ground Supply Power Supply DGND Digital Ground Supply Power Supply DGND Digital Ground Supply Power Supply DGND Digital Ground CHG_IN...
  • Page 32 GR47/48 Design Guidelines VRTC Supply 1.8 V Voltage for real time clock ADC1 Analogue Analogue to digital converter 1 ADC2 Analogue Analogue to digital converter 2 ADC3 Analogue Analogue to digital converter 3 2.75, internal C Data pullup 2.75, internal C Clock pullup BUZZER...
  • Page 33 GR47/48 Design Guidelines I/O8 General purpose I/O 8 Dig. 2.75 UART2 Reception Dig. 2.75 UART2 Transmission PCMULD Dig. 2.75 DSP PCM digital audio input PCMDLD Dig. 2.75 DSP PCM digital audio output PCMO Dig. 2.75 Codec PCM digital audio output PCMI Dig.

  • Page 34: Appendix Iii Gsm Transmit Waveform Characteristics

    GR47/48 Design Guidelines Appendix III GSM transmit waveform characteristics The simplified GSM loading characteristics and power supply reference model in relation to the GR47 system connector is represented in figure 1. J1 represents the interface to the GR47 system connector and the voltage there is referenced Vcc.
  • Page 35 GR47/48 Design Guidelines 577 s TRANSMIT GM47 Vcc Figure 2 - Transmit Burst Vcc Waveform A. The sharp fall in voltage in this region is caused by the ESR of the capacitors (mounted as close to the module Vcc pins as possible.

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