Wavecom WISMO Quik Q2501 Скачать руководство пользователя

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WM_PRJ_Q2501_PTS_002

- 001

March

2004

confidential ©

Page:

72 / 79

This document is the sole and exclusive property of WAVECOM. Not to be distributed or divulged
without prior written agreement.

Ce document est la propriété exclusive de WAVECOM. Il ne peut être communiqué ou divulgué à
des tiers sans son autorisation préalable.

8 Embedded Testability

8.1 Access to the serial link

Direct access to GSM UART1 serial link is very useful for:

Testability operations,

Firmware download.

To allow that access, the following design is recommended:

C1+
C1-
C2+
C2-
T1IN
T2IN

R1OUT

R2OUT

V+

V-

T1OUT
T2OUT

VCC

C404

2.2 µF

VCC_STK

CT125 / S_RI

CT109 / S_DCD

GND

WISMO

Q2501

GND

C403

2.2 µF

GSM_DTR1
GSM_TXD1

GSM_RI1
GSM_DCD1

MAX3237

U400

C400

100 nF

C401

2.2 µF

C402

2.2 µF

DVCC_MAX

VCC

GND

J400

SUB-D9F-C

T3IN
T4IN

GSM_RXD1
GSM_CTS1

T5IN

GSM_DSR1

R412
3.3

Ω

R1OUTB

R3OUT

GSM_RTS1

FORCEON

R410

2.2 k

Ω

R411

2.2 k

Ω

GND

~RST

BOOT

TP400

TP401

TP403

TP402 TP405 TP404

TP406

TP407

SERIAL LINK

DEBUG CONNECTOR

T3OUT
T4OUT
T5OUT

CT104 / S_RXD

CT106 / S_CTS

CT107 / S_DSR

CT108-2 / S_DTR

R1IN
R2IN
R3IN

INVALID

FOCROFF

GND

CT103 / S_TXD

CT105 / S_RTS

R404

1 k

Ω

VCC_STK

GND

VCC_STK

Figure 41: GSM UART1 serial link debug access

Содержание WISMO Quik Q2501

Страница 1: ...ted or divulged without prior written agreement Ce document est la propri t exclusive de WAVECOM Il ne peut tre communiqu ou divulgu des tiers sans son autorisation pr alable WISMO Quik Q25 series WIS...

Страница 2: ...perty of WAVECOM Not to be distributed or divulged without prior written agreement Ce document est la propri t exclusive de WAVECOM Il ne peut tre communiqu ou divulgu des tiers sans son autorisation...

Страница 3: ...configuration is GSM GPRS part 32 Mbits of Flash memory and 4 Mbits of SRAM GPS part 8 Mbits of Flash memory This document gives recommendations and general guidelines to design an application using...

Страница 4: ...er supply part 17 3 1 1 Main power supply and ground plane 17 3 1 2 RTC Back up supply 20 3 2 Common GSM GPS part 22 3 2 1 Module activation function ON OFF 22 3 2 2 Alternative download control funct...

Страница 5: ...tion 54 3 5 3 GPS antenna connection 55 3 5 4 Single coax connection 59 4 PCB Design 60 4 1 General Rules and Constraints 60 4 2 Specific Routing Constraints 60 4 2 1 System Connector 60 4 2 2 Power S...

Страница 6: ...Figure 9 Example N 1 of GSM and GPS activity status implementation 24 Figure 10 Example N 2 of GSM activity status implementation 24 Figure 11 Example of RS232 level shifter implementation for GSM UAR...

Страница 7: ...gure 30 Example of RS232 level shifter implementation for GPS UART2 48 Figure 31 Example of RS232 level shifter implementation for GPS UART0 49 Figure 32 SPI interface implementation for the dead reck...

Страница 8: ...sponsibility is assumed for its use Please read carefully the safety precautions for an application based on a WISMO Quik Q2501 module In addition Wavecom reserves the right to modify this information...

Страница 9: ...with poor no satellites view by the aid of external sensors that provide course odometer and heading gyroscope Single Coax WAVECOM concept that allows the user to use only one single coaxial cable fo...

Страница 10: ...e receiver knows due to a backup battery or by other techniques his last position approximate time and almanac Thanks to this it can quickly acquire satellites and get a position fix faster than in co...

Страница 11: ...a Carrier Detect DCE Data Communication Equipment DCS Digital Cellular System DR Dynamic Range DSR Data Set Ready DTE Data Terminal Equipment DTR Data Terminal Ready EFR Enhanced Full Rate E GSM Exten...

Страница 12: ...ics Association NOM NOMinal PA Power Amplifier Pa Pascal for speaker sound pressure measurements PBCCH Packet Broadcast Control CHannel PC Personal Computer PCB Printed Circuit Board PDA Personal Digi...

Страница 13: ...ri t exclusive de WAVECOM Il ne peut tre communiqu ou divulgu des tiers sans son autorisation pr alable Abbreviation Definition TBC To Be Confirmed TDMA Time Division Multiple Access TP Test Point TVS...

Страница 14: ...e shielding Module control Full set of AT commands for GSM GPRS including GSM 07 07 and 07 05 AT command sets Specific AT commands for GPS management on same link as GSM GPRS AT commands Direct recept...

Страница 15: ...vailable with external adaptation SIM Tool Kit Release 99 GPS GPS L1 civil frequency 1575 42 MHz 16 channels GPS receiver Accuracy 2 5 m CEP GPS 2 m CEP depending on accuracy of correction data SBAS W...

Страница 16: ...propri t exclusive de WAVECOM Il ne peut tre communiqu ou divulgu des tiers sans son autorisation pr alable 2 2 Functional architecture RF GSM FRONT END W I S M O Q 2 5 0 1 S Y S T E M C N N E C T O R...

Страница 17: ...any damage when starting the module 3 1 Power supply part 3 1 1 Main power supply and ground plane 3 1 1 1 Electrical constraints The main power supply VBATT is the only external power supply source u...

Страница 18: ...Because VBATT supplies directly the GSM RF power amplifier component it is essential to keep a minimum voltage ripple at this connection in order to avoid any phase error or spectrum modulation degrad...

Страница 19: ...rent peaks in a short time bursted radio emission The VBATT line must support peak currents with an acceptable voltage drop which guarantees a VBATT minimal value of 3 4 V lower limit of VBATT For PCB...

Страница 20: ...rnal Real Time Clock RTC The RTC is supported by the WISMO Quik Q2501 module when powered on but a back up power supply is needed to save date and time information when the module is switched off If t...

Страница 21: ...1 2 2 2 Non Rechargeable battery WISMO Q2501 GND Ex Varta CR2016 10 VCC_RTC 3 1 BAS16 Figure 4 RTC supplied by a non rechargeable battery Estimated range with 85 mAh battery 800 h min 3 1 2 2 3 Rechar...

Страница 22: ...left at high level until switch OFF VBATT 1 2 3 SW500 ON OFF Figure 6 Example of ON OFF pin connection 3 2 2 Alternative download control function BOOT If the standard X modem download procedure does...

Страница 23: ...s signal has to be considered as an emergency reset only a reset procedure is automatically driven by an internal hardware during the power up sequence This signal can also be used to provide a reset...

Страница 24: ...H_LED pin 72 and GPS_TIMEPULSE pin 17 can be used to drive two LEDs through an open collector digital transistor according to the module activity status GPS_TIMEPULSE GND VBATT U700 D702 1 2 R702 5 4...

Страница 25: ...erfaces UART1 main serial link which consists in a flexible 8 wire serial interface complying with V24 standard TX RX CTS RTS DSR DTR DCD and RI UART2 auxiliary serial link which consists in a flexibl...

Страница 26: ...sation pr alable Warning The application board must allow the WISMO serial link signals the BOOT the RESET and the ON OFF module signals to be easily accessed thus allowing the module firmware to be u...

Страница 27: ...ation pr alable 3 3 1 2 Auxiliary GSM Serial Link implementation GSM_UART2 C1 C1 C2 C2 T1IN T2IN R1OUT R2OUT V V T1OUT T2OUT R1IN R2IN GND 9 2 3 4 11 1 C203 470 nF C0805 15 8 S_RTS2 14 13 S_TXD2 S_CTS...

Страница 28: ...e I O up to 4 GSM General Purpose Output up to 1 GSM General Purpose Input Pin description Signal Pin I O I O type Description GPIO0 44 I O CMOS3X Multiplexed with GSM_CTS2 GPIO1 22 I O CMOS 2X GPIO2...

Страница 29: ...face or standard 2 wire peripherals The choice between these two types of peripherals is exclusive due to signal multiplexing 3 3 3 1 SPI Bus The SPI bus includes clock SPI_CLK I O SPI_IO and enable s...

Страница 30: ...son autorisation pr alable 3 3 3 2 Two wire bus The 2 wire interface includes clock and data signals complying with a standard 96 kHz interface Each signal has to be pulled up to VCC via an external...

Страница 31: ...ltage Suppressor diodes TVS on the signal connected to the SIM socket in order to prevent any ElectroStatic Discharge TVS diodes with low capacitance less than 10 pF have to be connected on SIM_CLK an...

Страница 32: ...est la propri t exclusive de WAVECOM Il ne peut tre communiqu ou divulgu des tiers sans son autorisation pr alable SIM socket connection Pin description Signal Pin number Description VCC 1 SIM_VCC RST...

Страница 33: ...ly set the external SIM driver level 1 8 V or 3 V As for 3 V SIM it is recommended to add Transient Voltage Suppressors on the signals connected to the SIM socket refer to Figure 16 Typical implementa...

Страница 34: ...rly set the external SIM driver level 3 V or 5 V As for 3 V SIM it is recommended to add Transient Voltage Suppressors on the signals connected to the SIM socket refer to Figure 16 Typical implementat...

Страница 35: ...oard scanner is equipped with internal pull down resistors for the rows and pull up resistors for the columns Current only flows from the column pins to the row pins This allows a transistor to be use...

Страница 36: ...e sole and exclusive property of WAVECOM Not to be distributed or divulged without prior written agreement Ce document est la propri t exclusive de WAVECOM Il ne peut tre communiqu ou divulgu des tier...

Страница 37: ...rophone inputs MIC2 and auxiliary microphone inputs MIC1 is the availability of an internal biasing for an electret microphone For both microphone paths the connection can be either differential or si...

Страница 38: ...ne MIC2 implementation 3 3 6 2 4 Auxiliary Microphone Inputs MIC1 MIC1 inputs do not include internal bias making these inputs the standard ones for an external headset or a hands free kit connected e...

Страница 39: ...s tiers sans son autorisation pr alable 3 3 6 2 5 Differential connection example Impedance of the microphone input in differential mode Module ON Rin 10 k 30 Module OFF Rin 10 M 30 Figure 21 MIC1 inp...

Страница 40: ...That is the reason why VCC_AUDIO must be an other 2 8 V to 3 V power supply instead of VCC which is available on system connector pin 60 R1 is used as a voltage supply filter with C4 R1 R2 C4 and C5 h...

Страница 41: ...r 2 positive output SPK2N 67 O Analog Speaker 2 negative output Pin description Signal Pin I O I O type Description SPK1P 61 O Analog Speaker 1 positive output SPK1N 63 O Analog Speaker 1 negative out...

Страница 42: ...7 F depending on speaker characteristics and output power C1 C2 R1 Zhp Using a single ended connection includes losing of the output power 6 dB compared to a differential connection Nevertheless in a...

Страница 43: ...ype Description BUZ 69 O Open collector Buzzer output The maximum peak current is 80 mA and the maximum average current is 40 mA A diode against transient peak voltage must be added as described below...

Страница 44: ...xternal digital devices VCC digital power supply is mainly used to pull up signals such as I O supply the digital transistors driving LEDs supply the SIM_PRES signal act as a voltage reference for ADC...

Страница 45: ...in power supply VBATT to be externally switched OFF Pin description Signal Pin I O I O type Description GSM_BBEN 6 O CMOS VCC_RTC 1X Indicator of GSM Base Band activation 3 3 11 External Interrupt The...

Страница 46: ...is a 10 bit resolution ADC ranging from 0 V to 2 8 V AUXADC input can be used for example to monitor external temperature useful for safety power off in case of application over heating Pin descriptio...

Страница 47: ...1 GPS activation function The GPS function can be activated either by software or by hardware command Hardware control of the GPS activation function is defined by the software Pin description Signal...

Страница 48: ...ault configuration this interface allows GPS NMEA frame communications Pin Description Signal Pin I O I O type Description GPS_RXD2 1 O Open Collector with 10 k internal pull up CT104 Receive Serial D...

Страница 49: ...entation GPS_UART0 This 2 wire serial interface is a 1 8 V interface Default protocol on this serial link is RTCM However NMEA protocol can be available on this serial link by software configuration v...

Страница 50: ...ignals as described in the table below Pin Description Signal Pin I O I O type Description GPS_SCK 5 I CMOS 1 8V SPI Clock GPS_MOSI 8 I O CMOS 1 8V 1X Serial Data Master Out Slave In GPS_MISO 11 I O C...

Страница 51: ...t voltage used to supply the gyroscope provide the reference voltage to the A D converter VREF input Even smallest voltage drops on the 5 V supply due to load changes in the WISMO Q2501 module can hav...

Страница 52: ...lgu des tiers sans son autorisation pr alable 3 4 3 2 Reverse Indicator Input Information not available for preliminary version 3 4 3 3 Odometer Input Information not available for preliminary version...

Страница 53: ...ection Block diagram Description Normal connection Two dedicated antennas are used Single Coax connection One specific antenna is used connected to the GSM GPRS connector The Single Coax feature allow...

Страница 54: ...e table hereafter A dual Band antenna will work in these frequency bands and must have the following characteristics Characteristics E GSM 900 DCS 1800 Frequency TX 880 to 915 MHz 1710 to 1785 MHz Fre...

Страница 55: ...antenna could affect the application TDMA noise for instance As a general recommendation all components or chips operated at high frequencies microprocessors memories DC DC converter or other active...

Страница 56: ...5 Typ 25 Max 45 dB Typical radiated gain 5 at zenith dBi Filtering 40 min 130 MHz of L1 rejection of GSM DCS Tx band dB Supply voltage 3 or 5 V With GPS antenna external supply Min Typ 30 Max 50 mA Wi...

Страница 57: ...en using DCS1800 band that is only at 135 MHz from GPS signals Figure 34 GPS reception jammed by GSM GPRS transmission Even if the Q2501 module has been designed to minimize the influence of GSM GPRS...

Страница 58: ...tween the Q2501 module and the passive antenna could easily add 1 dB taking into account losses in the cable and the connectors mismatch losses Consequently the total NF would be degraded to 4 dB Rang...

Страница 59: ...evices Similar LNA with lower consumption from other manufacturers can be used NEC Maxim RFMD Some basic RF rules must be observed for the PCB layout the distance between the ceramic patch antenna and...

Страница 60: ...ion design makes it possible all analog signals should be separated from digital signals by a Ground line on the PCB 4 2 Specific Routing Constraints 4 2 1 System Connector Refer to the datasheet of t...

Страница 61: ...ule The ground track or the ground plane on the application board must support current peaks as for the VBATT track If the ground track between the module and the power supply is a ground plane it mus...

Страница 62: ...lane is a complete layer of the application PCB To ensure a good shielding of the module a complete ground plane layer on the application board must be available with no trade off Connections between...

Страница 63: ...he application board the following recommendations must be observed for the PCB layout The RF signals must be routed using traces with 50 characteristic impedance Basically the characteristic impedanc...

Страница 64: ...route the digital line s outside the RF structure as shown in the figure below Bad routing Correct Routing The yellow traces cross the RF trace There is no signal around the RF path Stripline and Cop...

Страница 65: ...Connection Dedicated cable assembly Cable used Description One side of the coaxial cable is fitted with a male MMS connector the other one is soldered directly on the application board A specific cabl...

Страница 66: ...nductor Use 50 traces StripLine or MicroStrip Figure 39 Example of PCB routing for pigtail connection Note if a 2 5 mm diameter cable is used as pigtail it is recommended to use cable made with PTFE i...

Страница 67: ...s the sole and exclusive property of WAVECOM Not to be distributed or divulged without prior written agreement Ce document est la propri t exclusive de WAVECOM Il ne peut tre communiqu ou divulgu des...

Страница 68: ...l Specifications The next page shows the mechanical drawing which specifies the area needed for module fitting in an application That drawing gives among other things the drill template for the four p...

Страница 69: ......

Страница 70: ...should be paid to Possible spurious emission radiated by the application to the RF receiver in the receiver band ESD protection on SIM if accessible from outside serial link etc Refer to paragraph 3 3...

Страница 71: ...a PC There are two ways for downloading a software into the WISMO Q2501 module normal download mode use of XMODEM protocol alternative download mode use of a specific downloading software tool in ass...

Страница 72: ...C2 T1IN T2IN R1OUT R2OUT V V T1OUT T2OUT VCC 20 2 25 1 24 1 C404 2 2 F 4 VCC_STK 5 5 CT125 S_RI 6 CT109 S_DCD 6 1 15 11 9 2 11 9 8 GND 28 21 3 23 2 1 WISMO Q2501 GND C403 2 2 F GSM_DTR1 GSM_TXD1 GSM_...

Страница 73: ...debug connector In such a case input signals coming from this connector mask the input signals coming from the MAX3237 device VCC and GND are available on the debug connector to allow the powering of...

Страница 74: ...ed some parameters can be degraded because some basic precautions have not been taken poor power supply for example Most of the time this will not affect the functionality of the product but the produ...

Страница 75: ...mm pitch from MOLEX For further details about this connector refer to document 2 The matting connector from MOLEX has the following part number 52991 0801 For further details about this connector refe...

Страница 76: ...ips com 9 5 RF cable A wide variety of cables fitted with MMS connectors is proposed by RADIALL refer to the MMS datasheet in document 2 MMS pigtails MMS cable assemblies Between series cable assembli...

Страница 77: ...x com Tel 44 0 1622 618628 Fax 44 0 1622 618629 MicroPuissance ANN ST 0 005 0 3V 5V Immeuble FEMTO 1 avenue de Norv ge ZA de Courtaboeuf BP 79 91943 LES ULIS CEDEX jm gourin micropuissance fr Tel 33 1...

Страница 78: ...is document is the sole and exclusive property of WAVECOM Not to be distributed or divulged without prior written agreement Ce document est la propri t exclusive de WAVECOM Il ne peut tre communiqu ou...

Страница 79: ...Insulation Resistance 100 M min Physical Housing White glass filled LCP plastic UL 94V 0 Contact Phosphor Bronze Plating Gold over Nickel Operating Temperature 40 to 105 C CATALOG DRAWING FOR REFERENC...

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