manualshive.com logo in svg

u-blox AMY-5M, Руководство по оборудованию, Страница: 43 / 54

Поделиться
Скачать
u-blox AMY-5M Скачать руководство пользователя страница 43

AMY-5M - Hardware Integration Manual 

GPS.G5-MS5-08207-A3 

Preliminary 

Appendix 

 

 

Page 43 of 54

 

Appendix 

A

 

Component selection 

This section provides information about components that are critical for the performance of the AMY-5M GPS 
receiver module. 

Temperature range specifications need only be as wide as required by a particular application. For the purpose of 
this document, specifications for industrial temperature range (-40 °C   +85 °C) are provided.  

A.1

 

RTC crystal (Y2) 

ID 

Parameter 

Value 

1 

Frequency Specifications 

1.1 

Oscillation mode 

Fundamental Mode 

1.2 

Nominal frequency at 25 ºC 

32.768 kHz 

1.3 

Frequency calibration tolerance at 25 ºC 

< ±100 ppm  

2 

Electrical Specifications 

2.1 

Load capacitance C

L

 

9 pF

 

2.2 

Equivalent series resistance R

S

 

50 k  

Table 9: RTC Crystal specifications 

Manufacturer 

Order No. 

Micro Crystal 

CC7V-T1A 32.768 kHz 9.0 pF +/- 100 ppm 

Table 10: Recommend parts list for RTC Crystal Y2 

A.2

 

I2C Serial EEPROM memory 

Manufacturer 

Order No. 

ST 

M24C32-R 

Atmel 

AT24C32C 

Microchip 

24AA32A 

Catalyst 

CAT24C32 

Samsung 

S524AB0X91 

Table 11: Recommend parts list for I2C Serial EEPROM memory 

A.3

 

USB line protection (D2) 

Manufacturer 

Order No. 

ST Microelectronics 

USBLC6-2 

Table 12: Recommend parts list for USB line protection 

A.4

 

USB LDO (U3) 

Manufacturer 

Order No. 

Seiko Instruments Inc. 

S-1206B33-I6T2G 

Table 13: Recommend parts list for USB LDO 

Содержание AMY-5M

Страница 1: ...ce AMY 5M ROM Based GPS module featuring the u blox 5 positioning engine The AMY 5M module boasts the industry s smallest form factor and is a fully tested standalone solution that requires no host in...

Страница 2: ...ion contained therein is subject to the acceptance of the u blox terms and conditions They can be downloaded from www u blox com u blox makes no warranties based on the accuracy or completeness of the...

Страница 3: ...successfully design in and configure these u blox 5 based GPS GALILEO receiver modules For navigating this document please note the following This manual has a modular structure It is not necessary t...

Страница 4: ...al email address of our staff This makes sure that your request is processed as soon as possible You will find the contact details at the end of the document Helpful Information when Contacting Techni...

Страница 5: ...le 1 75 2 0 V supply 13 2 1 7 Separate supplies of 1 8 V 1 75 2 0V and 1 4 V 1 4 3 6 V 14 2 1 8 Separate supplies of 3 0 V 2 5 3 6 0V and 1 4 V 1 4 3 6 V 15 2 1 9 Power modes 15 2 1 10 Active antenna...

Страница 6: ...ss EOS 35 2 11 5 EOS protection measures 35 2 11 6 Electromagnetic Interference EMI 35 2 11 7 GSM applications 36 2 11 8 Recommended parts 38 3 Product handling soldering 39 3 1 Packaging shipping sto...

Страница 7: ...ifier U31 44 A 6 Dual open drain buffer U32 44 A 7 Antenna supervisor switch transistor T31 44 A 8 Ferrite bead filter FB1 44 A 9 Inductor L 44 A 10 Standard capacitors 44 A 11 Standard resistors 45 B...

Страница 8: ...Advanced interference suppression mechanisms and innovative RF architecture ensure maximum performance even in hostile signal environments 1 2 Architecture The AMY 5M module consists of two functional...

Страница 9: ...circuitry can be adapted to various concepts depending on the intended application Figure 2 gives an overview of the power supply features AMY 5 VDD_B NC VDD_IO VDD_IO 1 65 3 6 V XTAL_IN XTAL_OUT V_D...

Страница 10: ...put voltage is detected See also section 2 1 1 6 Limit V_BCKP and VDD_IO to 3 6 V 2 1 1 5 RF supply voltages The main supply of the RF unit is 1 8 V supplied to the VDD_RF pin Optionally this voltage...

Страница 11: ...al 1 8 V 1 75 2 0 V see section 2 1 6 Direct supply of core voltages VDD_RF VDD_3V 1 8 V V_DCDC 1 4 V see section 2 1 7 Dual power supply using 3 0V and 1 4V VDD_3V 3 0 V V_DCDC 1 4 V see section 2 1...

Страница 12: ...external supply capacitor VDD_RF Core Power Connect only as shown refer to Figure 4 through Figure 6 VDD_ANA Analog Power Not connected unless using supply capacitors VDD_LNA LNA Power Supply Not conn...

Страница 13: ...CDC 1 75 2 0 V Main Battery 1 4 3 6 V Backup Battery V_BCKP VDD_ANA VDD_LNA VDD_C V_TH leave V_TH open Crystal C20 fXTAL 32 768 kHz Y2 C19 optional VDD_3V VDD_RF When connecting to V_DCDC a filter is...

Страница 14: ...1 3 for details It assures stability since the sensitive RF supply is well separated from the fluctuating base band power supply C AMY 5 VDD_IO VDD_IO 1 65 3 6 V XTAL_IN XTAL_OUT V_DCDC 1 4 3 6 V 1 4V...

Страница 15: ...XTAL_IN XTAL_OUT V_DCDC 1 4 3 6 V 1 4V Supply 1 4 3 6 V Backup Battery V_BCKP VDD_ANA VDD_LNA VDD_C V_TH Crystal C20 fXTAL 32 768 kHz Y2 C19 VDD_3V 2 5 3 6 V 3 0V Supply VDD_RF VDD_B optional V_RESET...

Страница 16: ...J02 Alternative parts can be used if the inductor s resonant frequency matches the GPS frequency of 1575 4MHz R Low Noise Amplifier Active Antenna RF_IN VDD_3V L C C1 L1 C2 Figure 8 Recommended wiring...

Страница 17: ...dware handshake signals and synchronous operation are not supported 2 3 2 USB The u blox 5 USB interface supports the full speed data rate of 12 Mbit s 2 3 2 1 USB external components The USB interfac...

Страница 18: ...Ensures a pull down when LDO is disabled 10k R is recommended for USB self powered setup For bus powered setup R11 can be ignored Table 2 Summary of USB external components 2 3 3 Display Data Channel...

Страница 19: ...address e g whether it s a microcontroller EEPROM or D A Converter etc and can operate as either a transmitter or receiver depending on the function of the device The default DDC address for u blox G...

Страница 20: ...eption and should not be implemented if there are other participants on the bus contending for the bus control C CPU etc As a slave on the bus the u blox 5 GPS receiver cannot initiate the data transf...

Страница 21: ...ver does not detect the EEPROM device which would effectively configure the GPS receiver to be MASTER on the bus causing collision with the external host To ensure that the EEPROM device connected to...

Страница 22: ...her with other masters as they have no multi master support and may not be used with devices which stretch SCL during transfers Are SDA and SCL mixed up This may accidentally happen e g when connectin...

Страница 23: ...Mode Pins RXD1 EXTINT0 and EXTINT1 are powered by the backup domain VDD_B These pins do not have any built in pull up or pull down resistors Pins should be connected via a 100 kOhms resistor to VDD_IO...

Страница 24: ...CFG_xx No Normal Boot Mode No TMS CFG_PIN 1 Yes No Revert to ROM Default Safe Boot Mode Boot System Boot Safe ROM Read configuration from configuration pins CFG_xx 1 Revert to ROM Defaults Figure 16...

Страница 25: ...iguration settings may be modified with UBX configuration messages The modified settings remain effective until power down or reset If these settings have been stored in battery backup RAM then the mo...

Страница 26: ...of band interference signal caused by a wireless transmitter close to the GPS antenna for instance an alternative configuration can be used This is illustrated in Figure 18 A single ended SAW Filter...

Страница 27: ...quick sanity check of the design This section lists the most important items for a simple design check The Layout Design In Checklist also helps to avoid an unnecessary respin of the PCB and helps to...

Страница 28: ...eset is required For a 3V single power supply connect V_TH to GND RxD1 EXTINT0 EXTINT1 require external pull up resistors to VDD_IO Alternatively when not used reference designs connect via a 0R to GN...

Страница 29: ...USB_DP USB_DM Micro Processor USB USB port LDO V_RESET V_TH VDD_3V optional Connect VDDUSB to GND if USB port is not used optional connect RXD1 to VDD_IO via a resistor C V_DCDC Figure 20 Block diagr...

Страница 30: ...nnect to GND if not used C1 PIO8 EXTINT1 I External Interrupt Alternative function Pull up resistor of 100k to VDD_IO C2 Reserved I O Reserved Do not connect C7 USB_DM I O USB Leave open if not used C...

Страница 31: ...the micro strip been kept as short as possible Assure low serial resistance in V_DCDC power supply line choose a line width 400um Keep power supply line as short as possible Design a guard ring aroun...

Страница 32: ...g shielding and jamming from other digital devices are crucial issues and need to be considered very carefully 2 9 1 Footprint Figure 21 Recommended footprint top view Units are in mm 2 9 2 Paste mask...

Страница 33: ...gh temperature drift and air vents near the receiver 2 10Migration considerations With future u blox GPS platforms PIO 4 7 8 RX1 EXTINT0 EXTINT1 will belong to the VDD_IO domain as will all the other...

Страница 34: ...Institute CDMA Code Division Multiple Access EMC Electromagnetic compatibility EMI Electromagnetic interference EOS Electrical Overstress EPA Electrostatic Protective Area ESD Electrostatic discharge...

Страница 35: ...EOS protection measures as shown in Figure 23 are recommended for any designs combining wireless communication transceivers e g GSM GPRS and GPS in the same design or in close proximity Passive antenn...

Страница 36: ...bead TX RX GPS Receiver FB FB BLM15HD102SN1 10mm Figure 24 EMI Precautions VCC can be protected using a feed thru capacitor For electromagnetic compatibility EMC of the RF_IN pin refer to section 2 11...

Страница 37: ...of the GPS antenna Adding a CDMA GSM WCDMA bandbass filter before handset antenna 2 11 7 4 Out band interference Out band interference is caused by signal frequencies that are different from the GPS...

Страница 38: ...5 1 35x1 05x0 5 mm 2 11 5 2 5x2 0x1 0 mm Low loss RF filter for GPS Unbalanced to unbalanced operation Insertion Loss Bandwith and BW over temperatur Electrostatic Sensitive Device ESD MM CTS CER0032A...

Страница 39: ...tandards Institute ANSI GPS receivers are sensitive to ESD and require special precautions when handling Particular care must be exercised when handling patch antennas due to the risk of electrostatic...

Страница 40: ...g to IPC JEDEC J STD 020 u blox 5 modules must not be soldered with a damp heat process 3 3 3 Optical inspection After soldering the AMY 5M module consider an optical inspection step to check whether...

Страница 41: ...y such processes in combination with the u blox 5 module before implementing this in the production Casting will void the warranty 3 3 10 Use of ultrasonic processes Some components on the u blox 5 mo...

Страница 42: ...measurement u blox recommends the following Single Channel GPS Simulator Spirent GSS6100 Spirent Communications Positioning Technology www positioningtechnology co uk Figure 29 1 channel GPS simulator...

Страница 43: ...at 25 C 32 768 kHz 1 3 Frequency calibration tolerance at 25 C 100 ppm 2 Electrical Specifications 2 1 Load capacitance CL 9 pF 2 2 Equivalent series resistance RS 50 k Table 9 RTC Crystal specificat...

Страница 44: ...16 Recommend parts list for antenna supervisor switch transistor A 8 Ferrite bead filter FB1 Manufacturer Order No muRata BLM15HD102SN1 Table 17 Recommend parts list for the ferrite bead filter A 9 I...

Страница 45: ...ion 27R 5 0 1W R8 Pull up at RXD1 100k 5 0 1W R9 Pull up at EXTINT0 100k 5 0 1W R10 Pull up at EXTINT1 100k 5 0 1W R11 Pull down at VDD_USB 10K 5 0 1W R30 Pull up at antenna supervisor transistor 100K...

Страница 46: ...assumes no design services for this purpose nor warranties regarding functionality and performance Contact u blox support for further information Conditions apply B 1 Minimum bill of material smart a...

Страница 47: ...AMY 5M Hardware Integration Manual GPS G5 MS5 08207 A3 Preliminary A p p e n d i x Page 47 of 54 B 1 1 Schematic...

Страница 48: ...2 2U2 20 6 3V ROHS C2 CAP CER X5R 0402 2U2 20 6 3V ROHS C7 CAP CER X5R 0402 2U2 20 6 3V ROHS FB1 FERRITE BEAD MURATA BLM15HD 0402 1000R 100MHZ ROHS J1 DO NOT INSTALL J2 DO NOT INSTALL J3 DO NOT INSTAL...

Страница 49: ...based on a LEA 5 design and supports AMY 5 modules on one PCB and features one serial port as well as a USB connection If USB is not needed some components can be spared This design includes an antenn...

Страница 50: ...AMY 5M Hardware Integration Manual GPS G5 MS5 08207 A3 Preliminary A p p e n d i x Page 50 of 54 B 2 1 Schematic...

Страница 51: ...LQW15A 0402 22N 3 310MA ROHS L5 IND MURATA LQW15A 0402 6N8 3 700MA ROHS R11 RES THICK FILM CHIP 0402 0R 0 1W ROHS R13 R16 R5 R6 R7 R9 RES THICK FILM CHIP 0402 100K 5 0 1W ROHS R3 R4 RES THICK FILM CH...

Страница 52: ...Height Above WGS84 Ellipsoid LNA Low Noise Amplifier LOS Line of sight NMEA 0183 ASCII based standard data communication protocol used by GPS receivers PUBX u blox proprietary extension to the NMEA p...

Страница 53: ...Power management considerations with u blox 5 GPS receivers Docu No GPS G5 CS 08022 For regular updates to u blox documentation and to receive product change notifications please register on our home...

Страница 54: ...u blox AG Phone 41 44 722 74 44 E mail info u blox com Technical Support Phone 41 44 722 74 44 E mail support u blox com Asia Australia Pacific u blox Singapore Pte Ltd Phone 65 6734 3811 E mail info...

Отзывы:

Нет отзывов