SMD Type GPS Receiver Module GXB5005 Description The GXB5005 is a 12-channel GPS (Global Positioning System) receiver module. This small module includes all the functions required for GPS and is designed for using an active antenna. The GXB5005 can support the various kinds of the portable applications as well as the car navigation system. Features ‹ General Š Implementation of Sony CXD2951GA-4 single chip GPS Š Small size with SMD type pads and shield case Š Module size (typ.): 22.4 (W) × 23.5 (D) × 3.2 (H) [mm] Š Current consumption: Acquisition (typ): 70 [mA] Tracking (typ): 41 [mA] Battery backup (typ): 7 [μA] Š Datum: WGS-84 Š Communication method: Supports NMEA-0183 version 3.01 Š Internal 32.768kHz RTC Š Internal 18.414MHz TCXO Š Antenna input 50Ω Š Recommended antenna element An active antenna with 0dB and RF amplifier with NF ≤ 2dB, 8 to 30dB gain ‹ Functionality Š 12-channel GPS receiver capable of simultaneously receiving 12 satellites Š All-in-view measurement Š Valid fix indication output Š 1PPS output Š WAAS/EGNOS compatible Š Supported baud rate: 4800bps/9600bps/19200bps/38400bps by HW setting Š Internal power on reset circuit Š Antenna sense (option) Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits. E05728B67 - 1 - GXB5005 ‹ Performance Š Tracking sensitivity: –152dBm (typ.) Š Acquisition sensitivity: –139dBm (typ.) Š Time to first fix (time until initial measurement after power-on) (typ., Open sky) Cold start (without ephemeris and almanac): 40s Warm start (without ephemeris with almanac): 33s Hot start (with ephemeris and almanac): 2 to 3s Š Positioning accuracy (Open air with ≥ –130dBm, PDOP ≤ 2.0) Stand alone (GPS unit only) 2DRMS: approx. 2m Š Follow-up performance: Velocity: 500km/h or less Acceleration: 1G or less Absolute Maximum Ratings Item Symbol Min. Max. Unit Power supply voltage VDD –0.5 3.7 V Input voltage VI –0.5 5.5 V Output voltage VO –0.5 VDD + 0.5 V ° Operating temperature Topr –40 +85 C ° Storage temperature Tstg –40 +105 C Operating Conditions Item Symbol Min. Typ. Max. Unit Power supply voltage VDD 3.1 3.4 3.7 V Power supply voltage ripple VDD-rip 50 mVp-p Backup battery voltage Vbat 2.6 2.8 3.0 V Input pin voltage VIN –0.3 5.5 V ° Supply current: Acquisition (25 C) ICC 70 mA ° Supply current: Tracking (25 C) ICC 41 mA Standby current Istdby 7 120 μA ° Operating temperature Topr –40 +25 +85 C Reception frequency, L1 CA code FIN 1575.42 MHz - 2 - GXB5005 Architecture CXD2951 CMOS Radio Block TCXO Freq. Synthesizer CPU BPF Down LPF Converter 1 bit RF/IF Unit LNA LNA 1.023MHz SAW TCXO Baseband Unit Acquisition Block Tracking Block Host I/O ARM7TDMI Control signal JTAG, GPIO, etc. Time RAM/ CXO RTC Counter ROM 32.768kHz CPU Computation & Control Block 1.8V CPU, Counter Multiplier/ Regulator TCXO Divider DLL, D.MF, S/P 18.414MHz - 3 - GXB5005 Pin Configuration (Top View) 32kHz X'tal 22.4mm 19. 1PPS 1. AD In0 Regulator 2. AD In1 18. B.U. 17. VDD 3. ANT Cont 16. RST CXD2951 4. BR1 15. GND 5. BR0 14. GND LNA 6. RXD0 13. Status Out 7. TXD0 12. RF GND 8. WA1 11. RF IN 9. WA0 10. RF GND TCXO RF Shield Case Land Pin Description Pin No. Symbol I/O Description 1 AD In0 I Antenna sense input 0 2 AD In1 I Antenna sense input 1 3 ANT Cont I/O Antenna sense enable (High active) 4 BR1 I Baud rate setting 1 5 BR0 I Baud rate setting 0 6 RXD0 I UART (CH0) reception data 7 TXD0 O UART (CH0) transmission data 8 WA1 I WAAS enable 1 9 WA0 I WAAS enable 0 10 RF GND RF GND 11 RF IN I GPS signal input 12 RF GND RF GND 13 Status Out Status output 14 GND GND 15 GND GND 16 RST I Hardware reset (Low active) 17 VDD Power supply 3.4V 18 B.U. Battery backup 2.8V 19 1PPS O 1PPS output - 4 - 23.5mm GXB5005 Baud Rate Setting Baud rate BR1 BR0 4800 Open (L) H 9600 Open (L) Open (L) 19200 H Open (L) 38400 H H WAAS Enable WAAS WA1 WA0 *1 Command Open (L) Don’t care Disable H Open (L) Enable H H *1 WAAS function is set by @WA command via UART when WA1 is Low. - 5 - GXB5005 Electrical Characteristics DC Characteristics ° (Ta = –40 to +85 C) Item Symbol Condition Min. Typ. Max. Unit Pins VDD 3.1 3.4 3.7 V 17 Supply voltage Vbat 2.6 2.8 3.0 V 18 Supply voltage ripple VDD-rip 50 mVp-p 17, 18 H level VIH 2.0 5.5 V 3, 4, 5, 6, 8, Input 9, 16 L level VIL –0.3 0.8 V voltage AD VAD 0(VDD – 0.1) V 1, 2 H level VOH IOH = –8mA 2.4 V Output 3, 7, 19 voltage L level VOL IOL = 2mA 0.4 V Acquisition 70 ICC (3.3V) mA 17 Current consumption Tracking 41 Istdby Vbatt = 2.8V 7 120 μA18 AC Characteristics ° (Ta = 25 C) Item Symbol Condition Min. Typ. Max. Unit –130dBm input, C/N output value CN 42 dB *1 Tracking, TCXO frequency Ftcxo Internal 18.414 MHz Message latency Tl 1.0 s RF gain Grf 114 dB Noise figure NF 2 dB Zload = 5kΩ, Output signal rise time Ttlh 25 55 ns 20pF Zload = 5kΩ, Output signal fall time Tthl 30 60 ns 20pF *1 Using SONY evaluation software “GPS View” Timing of Output Signal Pin 7 (TXD0) 90% 90% 20pF 5kΩ Ttlh 10% 10% - 6 - GXB5005 Initialization The GXB5005 has a reset pin (Pin 16) and normally this pin should be left open. The GXB5005 can perform the power-on reset operation only by turning on or off the power supply pin (Pin 17). In addition, when configuring the component in order to realize the reset from the system side during operation, connect the reset pin to the external circuit. The following setting enables the reset. 1. When turning the power on (Power-on reset) VDD 17.VDD 16.RST VDD [V] 100ms or more VDD/2 GND When applying the power supply to the power supply pin (Pin 17), set the reset pin (Pin 16) Low in advance, and set it High 100ms after power-on. 2. Initialization during operation 17.VDD VDD 16.RST VDD [V] 100µs or more VDD/2 GND When performing the reset while the reset pin (Pin 16) is High, keep it Low for 100μs or more before setting High. - 7 - GXB5005 Status Out “Status Out” signal turns over 1. Definition of internal status Š Searching: Searching satellites after initialization Š Tracking: Navigation message decoded at least one satellite Š Positioning: Position fixing 2. “Status Out” status by each internal status Š Reset: Input, pulled down internally Š Initialization: Output Low Š Searching: Output 1s High, 1s Low turn over Š Tracking: Output 0.5s High, 0.5s Low turn over Š Positioning: Output High (keeping) 12 34 H Searching 1.0s 1.0s L H 0.5s Tracking 0.5s L H Positioning L 3. Jitter Turns over regular pulse width ±5% max. |T – T1| / T ≤ 5% T T H H T1 T1 L L T: Regular pulse width (1s/0.5s) T1: Actual pulse width 4. Status transition Check internal status every 0.5s, only the status changes, “Status Out” output logic turns over and keeps specified High-Low output interval. Only status changes to positioning, “Status Out” output turns over High caused by the previous status. 1.0s 0.5s High Status Out Low Searching Tracking Positioning Change state Change state - 8 - GXB5005 UART Interface Interface: Asynchronous serial interface (UART) Baud rate: 4800bps/9600bps/19200bps/38400bps Start bit: 1 bit Data bit: 8 bits Stop bit: 1 bit Parity bit: None Flow control: Xon/Xoff Data output cycle: Approximately 1 second (default) 1 LSB MSB D0 D1 D2 D3 D4 D5 D6 D7 0 Start bit Data bit Stop bit 1 bit 8 bits 1 bit NMEA0183 Format The GXB5005 can output 8 different types of sentence: GPGGA, GPGLL, GPGSA, GPGSV, GPRMC, GPVTG, GPZDA and PSGSA. If 9600bps, 19200bps or 38400bps baud rate is set for port setting, it outputs 7 types of sentence: GPGGA, GPGSA, GPGSV, GPRMC, GPVTG, GPZDA and PSGSA as default. Moreover, if 4800bps baud rate is set, it outputs 4 types of sentences: GPGGA, GPGSA, GPGSV and GPRMC as default. NMEA Message Output Timing NMEA messages are output within 1s after the 1PPS pulse. t + 1 t + 2 t + 3 t + 4 t + 5 t + 6 T 1PPS t + 1 t + 2 t + 3 t + 4 t + 5 t + 6 NMEA - 9 - GXB5005 1PPS Output The 1PPS output provides a timing pulse synchronized to GPS time once a valid fix is available. The figure below shows the behavior of the 1PPS output signal after reset. For a period of 160μs after reset, the 1PPS signal outputs the system clock. The actual 1PPS signal is activated at 500ms after reset. Reset 1+ ECLKOUT (1PPS) 500ms 1PPS signal output occurs 500ms after reset Expansion 160µs 1+ Reset ECLKOUT (1PPS) CPU clock exists for 160µs after reset Expansion Reset 1+ ECLKOUT (1PPS) 145ns (6.90MHz) - 10 - GXB5005 Backup Mode The backup mode is established by setting all inputs Low except for B.U. (Vbat: 2.6 to 3.0V). In this mode, the low power consumption can be achieved by stopping all oscillators except for RTC oscillator. Although all registers are initialized, the SRAM for both of Ephemeris data and Almanac data in backup area are held. Antenna Sense (Option) The antenna sensing function detects three kinds of external active antenna connection conditions, open/ normal/short, by using A/D converter incorporated into the CXD2951. The @ANT command shows the previous antenna sensing result and users would know the three kinds of conditions. For details, see the CXD2951 Communication Command Specifications. (Second) T + 1 T + 2 T + 3 T + 4 T + 5 T + 6 T + 7 T + 8 T + 9 T + 10 T + 11 T + 12 T + 13 T + 14 T + 15 T + 16 T + 17 RTC Antenna open normal normal short condition VDD Voltage (RFIN) 0 Approx.1s Approx. 3s Approx. 3s Antenna status detection timing Threshold Levels The threshold current Ir is as follows when VDD = 3.3V. Š open: Ir < 3.6mA Š normal: 3.7mA ≤ Ir ≤ 44.0mA Š short: 44.0mA < Ir - 11 - GXB5005 Reference Circuit The antenna sense circuit is available by putting a few components on the customer board. Refer to the following diagram. Antenna Power 3V GXB5005 10kΩ CXD2951 Sense Resistor ANT Cont (1/8W) EPORT12 22Ω AD In1 EVON1 AD In0 EVON0 Choke Coil Inductor To Active Antenna Antenna Connector Customer Board Command Specifications The GXB5005 modules have a command format, NMEA-0183 version 3.01. A list of the supported UART interface is as follows. For detailed descriptions, see the CXD2951 Communication Command Specification document. - 12 - GXB5005 Mechanical Dimensions (Unit: mm) - 13 - 9.8 6 6 22.4 Max. 2.4 Max. 2.4 21.55 3.2 R0.4 4-perforation Top View Tolerance: ±0.1 23.5 22 1.1 P = 2.2 1.1 P = 2.2 1.2 Max. 1 GXB5005 Label Printing The following label containing these items is put on a module after inspections. (The detailes of printing contents are specified separately.) 17mm 1 SONY 1 Manufacturer 2 Product name 2 GXB5005 3 Country of origin 18mm Manufacturing company (MKM) 3 4 4 JAPAN MKM 5 Manufacturing history: ٤٤ = year,ٌٌ = month,˜˜ = day 5 6 ٤٤ٌٌ˜˜ Ver 1.0 Version of software 6 7 8-٤٤٤-٤٤٤-٤٤ 7 Code number(for inner control) 8-753-242-14 - 14 - GXB5005 Tray (Unit: mm) Sony Corporation - 15 - 324 +0 +0 7.8 ± 0.5 1–1 292 1 –1 6.6 262 5.8 Taper 0˚ (12 places) 2-C10.5 CL 2.4 16-R5 15 2-C10 1 9 5.4 GXB5005 2-R3 C block 6.8 A A' 5.4 12.5 5.4 23 4-R6 6 D block Enlarged detail of C block (3:1) PS 2-R15 2-R14 Sectional view of B-B' CL /CTMKPI φ9 (Taper 10˚) 87 P37 87 2 131 4-R2 (Taper 5˚) R3 (Taper 0˚) Die side 6 Sectional view of A-A' Enlarged detail of D block (2:1) 228 +0 +0 1 201.4 1 –1 –1 7.8 ± 0.5 177 6.6 2.4 CL 1 6.8 14.5 B B' CL P33 P33 8 10.4 2 1.2 7.8 5 10.4 24