Ublox NEO-6 Integration Manual

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Ublox NEO-6 Integration Manual Manual pdf 71 page image

LEA-6 / NEO-6 / MAX-6 - Hardware Integration ManualUBX-14054794 Production Information AppendixPage 71 of 85The default NMEA message set for u-blox 6 is GGA, GLL, GSA, GSV, RMC and VTG. Contrary to ANTARIS 4,ZDA is disabled by default.Firmware update is supported by all of these interfaces. The firmware update mechanism of u-blox 6 is moresophisticated than with ANTARIS 4. It is now based on UBX protocol messages. Customers, who implementedfirmware download in their application processor, will need to replace the software. A template is available fromyour u-blox support team.In case migrating from LEA-4T or LEA-5T to LEA-6T-0, the command to save the configuration (UBX-CGF-CFG)changes. This is because in LEA-6T-0 a serial Flash at the SPI is used instead of the parallel Flash (LEA-4T and LEA-5T). So for the LEA-4T, LEA-5T, LEA-6T-1 and LEA-6T-2 the target to save the configuration has to be set to“devFlash”, but for the LEA-6T-0 it has to be set to “devSpiFlash”.Please refer to the u-blox 6 Receiver Description including Protocol Specification [4] for more information. Thisdocument is available on the u-blox website.B.2.2 Software migration from 6.02 to 7.03Timing Survey-in Mode:Customers using survey-in should review the changes in the accuracy limit parameters in CFG-TMODE and CFG-TMODE2 in FW 7.03, as described in the u-blox 6 Firmware Version 7.0x Release Note [8], and the u-blox 6Receiver Description including Protocol Specification [4]B.2.3 Software migration from 7.03 to FW1.00 GLONASS, GPS & QZSSWhen migrating from 7.03 to FW1.00 GLONASS, GPS & QZSS consult the GPS/GLONASS/QZSS Firmware 1.00for u-blox 6 Release Note [7], and the u-blox 6 Receiver Description including Protocol Specification(GPS/GLONASS/QZSS) [5].B.3 Hardware MigrationB.3.1 Hardware Migration: ANTARIS 4  u-blox 6u-blox 6 modules have been designed with backward compatibility in mind but some minor differences wereunavoidable. These minor differences will however not be relevant for the majority of the ANTARIS 4 designs.Good performance requires a clean and stable power supply with minimal ripple. Care needs to be exercised inselecting a strategy to achieve this. Avoid placing any resistance on the Vcc line. For better performance, use anLDO to provide a clean supply at Vcc and consider the following: Special attention needs to be paid to the power supply requirements. (currents & backup current see datasheet for further details) Wide power lines or even power planes are preferred. Place LDO near the module. Avoid resistive components in the power line (e.g. narrow power lines, coils, resistors, etc.).Placing a filter or other source of resistance at Vcc can create significantly longer acquisitiontimes.B.3.2 Hardware Migration: u-blox 5  u-blox 6Check the pins RxD1 and EXTINT0 regarding the input voltage threshold.Serial termination resistors: Recommendation has changed from 27  to 22 . See section 1.6.2.1.For more information see the LEA-6 Data Sheet [1] and LEA-5 Data Sheet [10].