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2002-12-12 

Page 16 of 20 

Evalkit User Manual 

  

 

5. APPENDICES 

5.1  Description of GPIO leds 

The standard iTRAX02 firmware uses the GPIO for debug purposes, 
see the following table (the led is active when the GPIO is at low 
state). 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LED MEANING 

TASK 

WHEN 

0 Calculating 

pseudo-ranges 

MsgTask 

Low 

Calculating new fix 

NavTask 

Low 

Valid fix available 

NavTask 

Low 

System error (Msg pool full) 

any 

Low 

4 New 

subframe 

data 

Data_io 

Toggle 

New track data 

Track_io 

Toggle 

New acquisition data 

Acq_io 

Toggle 

7 iTRAX02 

running 

Control 

Toggle 

Serial data to transmit 

ISR 

Low 

Serial data received 

ISR 

Low 

10 

Serial data buffer overflow 

ISR 

Low 

11 

Wake-up from sleep mode 

Main 

Input 

12 

Flash device busy 

Low 

13 

RF Amplifier on 

Main 

Low 

14 

Boot mode select (UART/SPI) 

Input 

15 

Boot mode select (Flash/Serial) 

Input 

Summary of Contents for ITrax02

Page 1: ...REV 1 2 User Manual ITrax02 Evaluation Kit 1 08 This manual explains the setting up of the Evaluation Kit December 12 2002 Fastrax Oy...

Page 2: ...2002 12 12 Page 2 of 20 Evalkit User Manual CHANGE LOG Rev Notes Date 1 0 Initial revision 12 12 2002 1 1 Added references 12 12 2002 1 2 Updated table of contents 12 12 2002...

Page 3: ...HARDWARE 12 3 1 Jumper settings for antenna bias I O connector 12 3 2 Jumper settings for Boot mode select I O connector 12 3 3 Jumper settings for serial interface internal 12 3 4 Jumper settings fo...

Page 4: ...MPLEMENTARY READING The following reference documents are complementary reading for this document Ref File name Document name 01 Install pdf iTrax02 Evaluation Kit Installation Guide 02 Uguide pdf iTr...

Page 5: ...n CD including GPS Workbench and documentation Installation guide Check that all items are included in the shipment before setting up the system 1 1 External Interfaces The Evaluation Kit with the ext...

Page 6: ...inputs PM0 PM1 SPI bus 1PPS output XRESET low active Two jumpers for antenna bias selection as described in Figure 1 and in the following chapter The antenna bias is preset in factory for 5V Connecti...

Page 7: ...he regulators may exceed the maximum dissipation 1 3 RS232 cables Two standard off the shelf Null modem cables are included The cable uses two 9 pin female connectors as shown below 1 2 3 4 5 6 7 8 9...

Page 8: ...r on LED turns on Right RESET Power on LED is on iTRAX02 gets RESET Note that the switch returns to ON position after the switch is released in the RESET position 1 5 Led Array The red led array indic...

Page 9: ...antenna is intended for magnet mounting Place the antenna outside preferably on the roof with good whole sky satellite visibility If needed the antenna installation can be extended with an extra cabl...

Page 10: ...GPIO7 I O General Purpose I O 1 16 GND Ground Power and signal ground 17 GPIO8 I O General Purpose I O 1 18 GND Ground Power and signal ground 19 GPIO9 I O General Purpose I O 1 20 GND Ground Power an...

Page 11: ...11 of 20 Evalkit User Manual 1 The uN8031 in iTRAX02 includes a keeper so that in the Evaluation Kit the GPIO lines have pull up resistors of 4 7 kohms See also iTRAX02 Interface Description for furt...

Page 12: ...by setting GPIO 15 to logical 0 For this purpose a jumper is placed across X6 27 X6 28 GPIO 15 on the 40 pin I O connector on the back panel see figure 1 Onwards from PCB rev D the Boot mode select is...

Page 13: ...ing for Antenna bias voltage shut down internal The jumper across X7 1 X7 2 provides an active shut down of the Antenna bias voltage e g during sleep mode that is controlled by the GPIO13 from iTRAX02...

Page 14: ...Control and Regul I O Connector LEDs Figure 4 Block diagram of motherboard PCB The Power Control and Regulators block supplies the iTRAX02 module with suitable regulated voltages A2 A5 and provides th...

Page 15: ...2 12 12 Page 15 of 20 Evalkit User Manual 4 2 PCB documents The schematics of the motherboard electronics the components layout of the motherboard and the Bill of Materials BOM can be found in Appendi...

Page 16: ...new fix NavTask Low 2 Valid fix available NavTask Low 3 System error Msg pool full any Low 4 New subframe data Data_io Toggle 5 New track data Track_io Toggle 6 New acquisition data Acq_io Toggle 7 iT...

Page 17: ...2002 12 12 Page 17 of 20 Evalkit User Manual 5 2 Schematics...

Page 18: ...2002 12 12 Page 18 of 20 Evalkit User Manual 5 3 Components layout...

Page 19: ...D CONNECTOR DE9PNF 2 X3 X5 PIN HEADER 2x20 1 X6 2X36N 6mm Au CONNECTOR COAX 85SMA 50 0 144 1 X10 SMA FEMALE 90 DEGR SUHNER PIN HEADER 1x2 2 X7 X8 2x36N 6mm Au PIN HEADER 2x2 1 X4 2x36N 6mm Au PIN HEAD...

Page 20: ...103 20 X7R 0805 TANT EL KOND 1u 5 C3 C13 C28 30 1U 20 16 V 1206 TANT EL KOND 10u 8 C1 C4 8 C10 C104 10U 20 16 V 6032 DIODE TMMBAT 48 1 V3 SCHOTTKY MINIMELF RESISTOR SMD 100k 4 R1 R5 R16 R55 5 200ppm 0...

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