LEA-6 / NEO-6 / MAX-6 - Hardware Integration Manual
UBX-14054794
Production Information
Design-in
Page 28 of 85
2.2.2.7
Module design with passive antenna and an external LNA
Figure 22 shows a GPS & GLONASS passive antenna design with the LEA-6N GLONASS, GPS & QZSS module.
For best performance with passive antenna designs use an external LNA.
Figure 22: Module design with passive antenna
A standard GPS LNA has enough bandwidth to amplify GPS and GLONASS.
For recommended SAW Filters for GPS & GLONASS (Part F2 in Figure 22), see section 3.3.9.
2.2.2.8
GLONASS SW integration
To activate GLONASS mode the customer application will have to send UBX proprietary commands for activating
and switching to GLONASS reception. The applicable SW commands are documented in the
u-blox 6 Receiver
Description including Protocol Specification (GPS/GLONASS/QZSS)
2.2.3
LEA-6R design
2.2.3.1
Connecting gyroscope and temperature sensor to the LEA-6R
The LEA-6R acts as SPI master. Following signals are used by the SPI:
Pin
Signal name Direction
Usage
23
SPI_SCK
Output
SPI clock
22
SPI_SCS1_N
Output
Chip Select signal for ADC/turn rate sensor
9
SPI_SCS2_N
Output
Chip Select signal for temperature sensor
2
SPI_MISO
Input
Serial data (Master In / Slave Out)
1
SPI_MOSI
Output
Serial data (Master Out / Slave In), leave open
Table 8: SPI pins for LEA-6R
