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BGS3 Hardware Interface Description

2.3 Circuit Concept

BGS3_HD_v01.000d

Page 21 of 109

2010-03-26

Confidential / Released



2.3

Circuit Concept

Figure 2

shows a block diagram of the BGS3 module and illustrates the major functional com-

ponents:

Baseband block:
•

Digital baseband processor with DSP

•

Analog processor with power supply unit (PSU)

•

Flash / PSRAM (stacked)

•

Application interface (SMT with connecting pads)

RF section:
•

RF transceiver

•

RF power amplifier

•

RF front

•

Antenna pad

Figure 2:

BGS3

block diagram

BATT+

GND

IGT

EMERG_OFF

ASC(0)

SIM Interface

D(0:15)

A(0:24)

RD; WR; CS; WAIT

Interface

RF - Baseband

NTC

BATT_TEMP

SYNC

Transceiver

Power Amplifier

PSRAM

Nor-Flash

Audio analog

VEXT

ISENSE

VSENSE

VCHARGE

CHARGEGATE

TEMP1

REFCHG

ASC(1)

26MHz

Front End

PWR_IND

Measuring

Network

32.768

kHz

26MHz

App

lic

atio

n In

Digital and Analog

Baseband Processor

TEMP2

BATTEMP

Several

Power supply

voltages

DAI

Summary of Contents for BGS3

Page 1: ...BGS3 Version 01 000d DocId BGS3_HD_v01 000d Hardware Interface Description...

Page 2: ...ERIOD OF TIME TO OBSERVE SECRECY REGARDING ANY INFORMATION AND DATA PROVIDED TO HIM IN THE CONTEXT OF THE DELIVERY OF THE PRODUCT THIS GENERAL NOTE SHALL BE GOV ERNED AND CONSTRUED ACCORDING TO GERMAN...

Page 3: ...Down Scenarios 26 3 3 1 Turn on BGS3 26 3 3 1 1 Turn on BGS3 Using Ignition Line IGT 26 3 3 1 2 Configuring the IGT Line for Use as ON OFF Switch 29 3 3 1 3 Turn on BGS3 Using the VCHARGE Signal 29 3...

Page 4: ...Loudspeaker Circuit 56 3 11 4 Digital Audio Interface DAI 56 3 11 4 1 Master Mode 58 3 11 4 2 Slave Mode 59 3 12 Control Signals 61 3 12 1 Synchronization Signal 61 3 12 2 Using the SYNC Line to Cont...

Page 5: ...ature 95 6 2 3 1 Reflow Profile 95 6 2 3 2 Maximum Temperature and Duration 96 6 2 4 Durability and Mechanical Handling 97 6 2 4 1 Storage Life 97 6 2 4 2 Processing Life 97 6 2 4 3 Baking 97 6 2 4 4...

Page 6: ...of ASC1 50 Table 17 Configuration combinations for the PCM interface 57 Table 18 Overview of DAI signal functions 57 Table 19 Return loss in the active band 64 Table 20 Absolute maximum ratings 68 Ta...

Page 7: ...configuration 56 Figure 20 Master PCM interface Application 58 Figure 21 Short Frame PCM timing 58 Figure 22 Long Frame PCM timing 59 Figure 23 Slave PCM interface application 60 Figure 24 Slave PCM T...

Page 8: ...n 00 051 New document BGS3 Hardware Interface Description Version 01 000 Chapter What is new 5 3 5 4 Renamed all IEC 68 standards to IEC 60068 6 3 1 1 Revised Figure 41 Chapter What is new 1 3 Updated...

Page 9: ...Interface Description 0 Document History 9 BGS3_HD_v01 000d Page 9 of 109 2010 03 26 Confidential Released New document BGS3 Hardware Interface Description Version 00 051 Chapter What is new Initial d...

Page 10: ...24 Application Developer s Guide 8 Application Note 26 Power Supply Design for Wireless Applications 9 Application Note 48 SMT Module Integration 10 Multiplexer User s Guide 11 Multiplex Driver Devel...

Page 11: ...r terminal printer or for example GSM application DTR Data Terminal Ready DTX Discontinuous Transmission EFR Enhanced Full Rate EGSM Enhanced GSM EIRP Equivalent Isotropic Radiated Power EMC Electroma...

Page 12: ...Control Channel PCB Printed Circuit Board PCL Power Control Level PCM Pulse Code Modulation PCN Personal Communications Network also referred to as DCS 1800 PCS Personal Communication System also ref...

Page 13: ...e SMT Surface Mount Technology SRAM Static Random Access Memory TA Terminal adapter e g GSM module TDMA Time Division Multiple Access TE Terminal Equipment also referred to as DTE Tx Transmit Directio...

Page 14: ...he use of certain hazardous substances in electrical and electronic equip ment RoHS Table 2 Standards of North American type approval CFR Title 47 Code of Federal Regulations Part 22 and Part 24 Telec...

Page 15: ...formation Industry of the People s Republic of China SJ T 11363 2006 Requirements for Concentration Limits for Certain Hazardous Sub stances in Electronic Information Products 2006 06 SJ T 11364 2006...

Page 16: ...nce the SAR value varies significantly with the individual product design manufacturers are advised to submit their product for approval if designed for portable use For European and US markets the re...

Page 17: ...the suspension or denial of cellular services to the offender legal action or both Do not operate the cellular terminal or mobile in the presence of flammable gases or fumes Switch off the cellular t...

Page 18: ...ply 3 2V to 4 5V Ambient operating temperature according to IEC 60068 2 Normal operation 30 C to 75 C Restricted operation 75 C to 85 C 30 C to 40 C Physical Dimensions 29 6mm x 33 9mm x 3 2mm Weight...

Page 19: ...nt 2 serial interfaces ASC0 8 wire modem interface with status and control lines unbalanced asyn chronous Adjustable baud rates 300bps to 921 600bps Autobauding 1 200bps to 460 800bps Supports RTS0 CT...

Page 20: ...9 2010 03 26 Confidential Released 2 2 BGS3 System Overview Figure 1 BGS3 system overview User Application Module Application Interface Headphones or Headset Charger Charging circuit UART SIM card Ant...

Page 21: ...stacked Application interface SMT with connecting pads RF section RF transceiver RF power amplifier RF front Antenna pad Figure 2 BGS3 block diagram BATT GND IGT EMERG_OFF ASC 0 SIM Interface D 0 15 A...

Page 22: ...tion The host interface incorporates several sub interfaces described in the following sections Power supply see Section 3 2 Charger interface see Section 3 5 SIM interface see Section 3 8 Serial inte...

Page 23: ...onsumption depends on network coverage individual set tings such as DTX off on FR EFR HR hopping sequences antenna GPRS IDLE Module is ready for GPRS data transfer but no data is cur rently sent or re...

Page 24: ...XT line a regulated voltage for an external application This voltage is not available in Power down mode SIM switch to provide SIM power supply 3 2 1 Minimizing Power Losses When designing the power s...

Page 25: ...ure 4 Figure 4 Position of reference points BATT and GND 3 2 3 Monitoring Power Supply by AT Command To monitor the supply voltage you can also use the AT SBV command which returns the value related t...

Page 26: ...When the BGS3 module is in Power down mode or Charge only mode it can be started to Nor mal mode by driving the IGT ignition line to ground This must be accomplished with an open drain collector drive...

Page 27: ...red to AT Q3 RTS CTS handshake If the application design does not integrate RTS CTS lines the host application shall wait at least for the SYSSTART URC However if the URCs are neither used due to auto...

Page 28: ...Scenarios 63 BGS3_HD_v01 000d Page 28 of 109 2010 03 26 Confidential Released Figure 6 Powerup with IGT held low before switching on operating voltage at BATT For details on how to use EMERG_OFF to r...

Page 29: ...BGS3 is on the IGT line must be asserted for at least 1s before being released The module switches off after the line is released The switch off routine is identical with the procedure initiated by A...

Page 30: ...n the volatile memory Therefore this procedure is intended only for use in case of emergency e g if BGS3 does not respond if reset or shutdown via AT command fails The EMERG_OFF signal is available on...

Page 31: ...or configured by AT command Abbreviations used in below Table 8 L Low level H High level L H Low or high level I Input O Output OD Open Drain PD Pull down with min 15 A and max 100 A PD k Fix pull dow...

Page 32: ...other AT commands There are two ways to verify when the module turns off Wait for the URC SHUTDOWN It indicates that data have been stored non volatile and the module turns off in less than 1 second...

Page 33: ...critical limits of overtemperature or undertemperature the battery is exceeding the critical limits of overtemperature or undertemperature undervoltage or overvoltage is detected See Charge only mode...

Page 34: ...ated URCs indicating the level 2 or 2 are instantly followed by an orderly shutdown except in cases described in Section 3 3 4 2 The presentation of these URCs is always enabled i e they will be outpu...

Page 35: ...to prevent damage to the module Extended usage of the deferred shutdown functionality may result in damage to the module and possibly other severe consequences 3 3 4 3 Undervoltage Shutdown If the mea...

Page 36: ...BC Overvoltage warning This alert is sent once When the overvoltage shutdown threshold is exceeded the module will send the following URC SBC Overvoltage shutdown before it shuts down cleanly This typ...

Page 37: ...5 degrees BGS3 returns to the higher Multislot Class If the temperature stays at the critical level or even continues to rise BGS3 will not switch back to the higher class After a transition a possib...

Page 38: ...n your application according to the Figure 46 3 5 2 Software Requirements Use the command AT SBC parameter current to enter the current consumption of the host application This information enables the...

Page 39: ...arging process will not start if no NTC is present Ensure that the pack incorporates a protection circuit capable of detecting overvoltage pro tection against overcharging undervoltage protection agai...

Page 40: ...for use with electronic applications like mobile phones PDAs MP3 players security and telematic devices It has almost the same properties as the above Li Ion battery It is type Polymer is smaller lig...

Page 41: ...V the battery is charged at 100mA Software controlled charging Controlled over CHARGEGATE Temperature conditions 0 C to 45 C Software controlled charging is done when the charger is present connected...

Page 42: ...connected Charge mode the AT SMSO command causes the module to shut down shortly and then start into the Charge only mode In Charge only mode the AT SMSO command is not usable In Charge only mode the...

Page 43: ...power level PCL5 and GPRS Class 10 at the same time the current consumption is higher than the current supplied by the charger Charge only mode Connect charger to charger input of host application ch...

Page 44: ...e both the BGS3 and the application must be configured to use hard ware flow control This is necessary since the CTSx signal is set reset every 0 9 2 7 seconds in order to indicate to the application...

Page 45: ...up the ME In this case the activity time is at least the time set with AT SCFG PowerSaver Mode9 Time out psm9to default 2 seconds RTSx has to be asserted for at least a dedicated debounce time in ord...

Page 46: ...mode white columns intended modes Table 13 State transitions of BGS3 except SLEEP mode Intended mode POWER DOWN Normal mode1 1 Normal mode covers TALK DATA GPRS IDLE and SLEEP modes Charge only mode2...

Page 47: ...r to meet the specifications of 3GPP TS 51 010 1 and to satisfy the requirements of EMC compliance To avoid possible cross talk from the CCCLK signal to the CCIO signal be careful that both lines are...

Page 48: ...ansferring CSD fax and GPRS data and for controlling the GSM module with AT commands Full Multiplex capability allows the interface to be partitioned into three virtual channels yet with CSD and fax s...

Page 49: ...d Table 15 DCE DTE wiring of ASC0 V 24 circuit DCE DTE Line function Signal direction Line function Signal direction 103 TXD0 Input TXD Output 104 RXD0 Output RXD Input 105 RTS0 Input RTS Output 106 C...

Page 50: ...D application sends data to module s TXD1 signal line Port RXD application receives data from the module s RXD1 signal line Figure 14 Serial interface ASC1 Features Includes only the data lines TXD1 a...

Page 51: ...istics of the voiceband part vary with the audio mode For example sending and receiving amplification sidetone paths noise suppression etc depend on the selected mode and can be altered with AT comman...

Page 52: ...voltage supply VMIC and the dedicated audio ground line AGND Both lines are well suited to feed a balanced audio application or a single ended audio appli cation The AGND line on the BGS3 board is esp...

Page 53: ...sed to the MICPx DC level It is AC coupled via CK to a resistive divider which is used to optimize supply noise cancellation by the differential micro phone amplifier in the module The VMIC voltage sh...

Page 54: ...ched on Only if VMIC is switched on can the voltage applied to any MIC line be in the range of 2 4V to 0V If these limits are exceeded undervoltage shutdown may be caused Consider that the maximum ful...

Page 55: ...ed if gains larger than 20dB are used The filter can be at tached as a simple first order RC network RVMIC and CF If a high input level and a lower gain are applied the filter is not necessary Conside...

Page 56: ...face DAI The DAI can be used to connect audio devices capable of PCM Pulse Code Modulation or for type approval The following chapters describe the PCM interface functionality The PCM functionality al...

Page 57: ...es TXDAI and RXDAI however are used in both modes Unused inputs should be tied to GND via pull down resistors In addition DAI1 requires a 47kOhm pull down resistor to be placed as close as possible to...

Page 58: ...nsmission starts if short frame is configured If long frame is selected the frame sync signal FS is high during the whole transfer of the 16 data bits Each frame has a duration of 125 s and contains 3...

Page 59: ...nsfer starts at the falling edge of FSIN if the short frame format is selected and at the rising edge of FSIN if long frame format is selected With this edge control the frame sync signal is independe...

Page 60: ...ed Figure 23 Slave PCM interface application The following figures show the slave short and long frame timings Because these are edge controlled frame sync signals may deviate from the ideally form as...

Page 61: ...ection 3 12 2 The first function factory default AT SSYNC 0 is recommended if you want your application to use the synchronization signal for better power supply control Your platform design must be s...

Page 62: ...D must be connected to the host application The connected LED can be operated in two different display modes AT SSYNC 1 or AT SSYNC 2 For details please refer to 1 Figure 27 LED Circuit Example Especi...

Page 63: ...t the expense of a higher current consumption Therefore utilizing the RING0 line provides an option to significantly reduce the overall current consumption of your application The behavior of the RING...

Page 64: ...Installation The antenna is connected by soldering the antenna pad RF_OUT i e pad 96 and its neigh boring ground pads GND i e pads 81 and 119 directly to the application s PCB Figure 30 Antenna pads T...

Page 65: ...For type approval purposes the module can be equipped with an optional coaxial antenna con nector U FL R SMT along with other necessary components The U FL R SMT connector has been chosen as antenna r...

Page 66: ...by the BGS3 module i e the trans mission line to the antenna connector as shown in Figure 32 Within the area populated by the EGS3 module the RF line width shall be reduced to 700 m and the distance t...

Page 67: ...BGS3 Hardware Interface Description 4 2 RF Line Routing Design 67 BGS3_HD_v01 000d Page 67 of 109 2010 03 26 Confidential Released Figure 32 RF line on interface board All dimensions are given in mm...

Page 68: ...ngs Parameter Min Max Unit Peak current of power supply 1 6 A Supply voltage BATT 0 3 4 9 V Voltage at digital lines in POWER DOWN mode 0 3 0 3 V Voltage at digital lines in normal operation 0 3 3 05...

Page 69: ...own is deferred until hang up 30 to 40 80 to 90 C Automatic shutdown2 Temperature measured on BGS3 board Temperature measured at battery NTC 2 Due to temperature measurement uncertainty a tolerance on...

Page 70: ...y relative Low High 10 90 at 40 C IPC JEDEC J STD 033A Air pressure Low High 70 106 kPa IEC TR 60271 3 1 1K4 IEC TR 60271 3 1 1K4 Movement of surrounding air 1 0 m s IEC TR 60271 3 1 1K4 Water rain dr...

Page 71: ...the Standard s acceleration reference value was increased to 20g Shock half sinus Acceleration 500g Shock duration 1msec 1 shock per axis 6 positions x y and z DIN IEC 60068 2 27 Dry heat Temperature...

Page 72: ...lists the pads assignments Figure 33 Numbering plan for connecting pads bottom view 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 41 42 43 37 38 3...

Page 73: ...ot use 53 Do not use 93 GND 14 IGT 54 Do not use 94 GND 15 RXD0 55 EPN1 95 GND 16 CCIN 56 MICN1 96 RF_OUT 17 CCCLK 57 Do not use 97 GND 18 DAI6 58 Do not use 98 GND 19 DAI5 59 Do not use 99 GND 20 Do...

Page 74: ...g drop rip ple spikes Power supply GND Ground Application Ground Charge Interface VCHARGE I VImin 3 1V VImax 7 00V This line signalizes to the pro cessor that the charger is con nected If unused keep...

Page 75: ...onnected to an external pull up resistor Low state of the open collector indi cates that the module is on Vice versa high level notifies the Power down mode Therefore the line may be used to enable ex...

Page 76: ...Only effective for approximately 220ms during the assertion of IGT when the module is about to start Syn chroni zation SYNC O VOLmax 0 3V at I 0 1mA VOHmin 2 3V at I 0 1mA VOHmax 3 00V n Tx n x 577 s...

Page 77: ...100k VILmax 0 6V at I 25 A VIHmin 2 1V at I 10 A VOmax 3 05V CCIN Low SIM card holder closed Maximum cable length or cop per track 100mm to SIM card holder All signals of SIM interface are protected a...

Page 78: ...4 7k VILmax 0 45V VIHmin 1 35V VIHmax CCVCCmin 0 3V 2 00V RO 100 VOLmax 0 3V at I 1mA VOHmin 1 45V at I 0 5mA VOHmax 1 90V CCCLK O RO 100 VOLmax 0 3V at I 1mA VOHmin 1 45V at I 0 5mA VOHmax 1 90V CCV...

Page 79: ...nimum differential load 7 5Ohms The audio output can directly operate an 8 Ohm loud speaker If unused keep lines open EPN1 O MICP1 I Full Scale Input Voltage 1 6 Vpp 0dBm0 Input Voltage 1 1 Vpp At MIC...

Page 80: ...3 2 3 8 4 5 V Voltage drop during transmit burst Normal condition power control level for Pout max 400 mV Voltage ripple Normal condition power control level for Pout max f 200kHz f 200kHz 50 2 mV mV...

Page 81: ...900MHz Mode GSM call GPRS Class 8 GPRS Class10 Timeslot configuration 1Tx 1Rx 1Tx 4Rx 2Tx 3Rx RF power nominal 2W 33dBm 2W 33dBm 2W 33dBm 1W 30dBm Radio output power reduction with AT SCFG parameter...

Page 82: ...1900MHz Mode GSM call GPRS Class 8 GPRS Class10 Timeslot configuration 1Tx 1Rx 1Tx 4Rx 2Tx 3Rx RF power nominal 1W 30dBm 1W 30dBm 1W 30dBm 0 5W 27dBm Radio output power reduction with AT SCFG paramet...

Page 83: ...parameters adjustable by AT commands Parameter Influence to Range Gain range Calculation inBbcGain MICP MICN analogue amplifier gain of baseband controller before ADC 0 7 0 42dB 6dB steps inCalibrate...

Page 84: ...2010 03 26 Confidential Released 5 7 2 Audio Programming Model The audio programming model shows how the signal path can be influenced by varying the AT command parameters The parameters inBbcGain an...

Page 85: ...individual handset Direct access to speech coder Direct access to speech coder Gain setting via AT command Defaults inBbcGain outBbcGain Fix 5 2 Adjustable 2 2 Adjustable 5 1 Adjustable 5 2 Adjustable...

Page 86: ...differential output voltage peak to peak EPP2 to EPN2 4 0 4 2 V V 32 no load Volume 32 3 14 dBm0 Full Scale Nominal differential out put voltage peak to peak EPP1 to EPN1 4 2 4 3 V V 8 no load Volume...

Page 87: ...will lead to clipping if the default gain is used 3 The idle channel noise was measured with digital zero signal fed to decoder This can be realized by setting outCalibrate and sideTone to 0 during a...

Page 88: ...nput voltage peak to peak for 0dBm0 MICP1 to MICN1 or AGND MICP2 to MICN2 or AGND 1 1 V MICPx must be biased with 1 25V VMIC 2 Input amplifier gain in 6dB steps inBbcGain 0 42 dB Set with AT SNFI Fine...

Page 89: ...S MS GSM 850 869 894 MHz E GSM 900 925 960 MHz GSM 1800 1805 1880 MHz GSM 1900 1930 1990 MHz RF power ARP with 50 load GSM 850 31 33 35 dBm E GSM 9001 1 Power control level PCL 5 31 33 35 dBm GSM 1800...

Page 90: ...ing ports of BGS3 are not accessible to the user of the final product since they are installed within the device and therefore are only protected according to the Human Body Model requirements BGS3 ha...

Page 91: ...v01 000d Page 91 of 109 2010 03 26 Confidential Released 6 Mechanics Mounting and Packaging 6 1 Mechanical Dimensions of BGS3 Figure 35 shows the top view of BGS3 and provides an overview of the board...

Page 92: ...BGS3 Hardware Interface Description 6 1 Mechanical Dimensions of BGS3 92 BGS3_HD_v01 000d Page 92 of 109 2010 03 26 Confidential Released Figure 36 Dimensions of BGS3 all dimensions in mm...

Page 93: ...so 9 6 2 1 SMT PCB Assembly 6 2 1 1 Land Pattern and Stencil The land pattern and stencil design as shown in Figure 37 and Figure 38 is based on Cinterion characterizations for lead free solder paste...

Page 94: ...and temperature cycling Sample surface mount checks are described in 9 It is recommended to characterize land patterns before an actual PCB production taking indi vidual processes materials equipment...

Page 95: ...are susceptible to damage induced by absorbed moisture Cinterion s BGS3 module complies with the latest revision of the IPC JEDEC J STD 020 Stan dard for moisture sensitive surface mount devices and...

Page 96: ...flow should generally be followed the limits listed above must not be exceeded BGS3 is specified for one soldering cycle only Once BGS3 is removed from the application the module will very likely be d...

Page 97: ...anufacturing site processing the modules should have ambient temperatures below 30 C and a relative humidity below 60 6 2 4 3 Baking Baking conditions are specified on the moisture sensitivity label a...

Page 98: ...for BGS3 is illustrated in Figure 40 The figure also shows the prop er part orientation The tape width is 56 mm and the BGS3 modules are placed on the tape with a 36 mm pitch The reels are 330mm in di...

Page 99: ...ng 102 BGS3_HD_v01 000d Page 99 of 109 2010 03 26 Confidential Released 6 3 1 2 Barcode Label A barcode label provides detailed information on the tape and its contents It is attached to the reel Figu...

Page 100: ...els are stored inside an MBB moisture barrier bag together with a humidity indi cator card and desiccant pouches see Figure 43 The bag is ESD protected and delimits mois ture transmission It is vacuum...

Page 101: ...BGS3 Hardware Interface Description 6 3 Packaging 102 BGS3_HD_v01 000d Page 101 of 109 2010 03 26 Confidential Released Figure 44 Moisture Sensitivity Label...

Page 102: ...ed from the MBB The humidity indicator card is a moisture indicator and is included in the MBB to show the ap proximate relative humidity level within the bag Sample humidity cards are shown in Figure...

Page 103: ...d ule circuit for example reverse current from high state external control lines Therefore the controlling application must be designed to prevent reverse flow While developing SMT applications it is...

Page 104: ...CHARGEGATE CCGND CCCLK CCRST CCIN CCVCC 200nF AGND EPN1 EPP1 EPP2 EPN2 Digital Audio 7 BC847 BC847 SYNC CRS04 1nF 10pF V up to 7 0V charge Sample Application 8 4 For debug and or test purposes test po...

Page 105: ...ment Support Box DSB75 SIM card reader integrated on DSB75 U FL R SMT antenna connector and U FL LP antenna cable Handset type Votronic HH SI 30 3 V1 1 0 Li Ion battery capacity 1200mAh PC as MMI Figu...

Page 106: ...ipment The BGS3 reference application registered under the above identifiers is certified to be in ac cordance with the following Rules and Regulations of the Federal Communications Commis sion FCC an...

Page 107: ...is Class B digital apparatus complies with Canadian ICES 003 Cet appareil num rique de la classe B est conforme la norme NMB 003 du Canada If the final product is not approved for use in U S territori...

Page 108: ...Cinterion ordering number L30960 N1575 A100 1 With Transparent TCP Service support 2 For Brazilian market only DSB75 Evaluation Kit Cinterion Ordering number L36880 N8811 A100 Votronic Handset VOTRONI...

Page 109: ...ong Singapore Phone 65 268 6868 Fax 65 265 6044 Molex Japan Co Ltd Yamato Kanagawa Japan Phone 81 462 65 2324 Fax 81 462 65 2366 Table 40 Hirose sales contacts subject to change Hirose Ltd For further...

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