LEA-6 / NEO-6 / MAX-6 - Hardware Integration Manual
UBX-14054794
Production Information
Design-in
Page 30 of 85
2.2.3.3
Supported A/D converters
The following table lists the supported A/D converters:
Manufacturer
Device
Linear Technology
LTC1860
Table 10: Supported A/D converters
2.2.3.4
Supported temperature sensors
The following table lists the supported temperature sensors:
Manufacturer
Device
National Semiconductor
LM70
Table 11: Supported temperature sensors
Note, that the temperature sensor inside the EPSON XV-8000 gyroscope sensor is not supported.
2.2.3.5
Forward / Backward indication
Use of the forward / backward indication signal
FWD
is optional but strongly recommended for good dead
reckoning performance. It has an internal pull-up and therefore can be left open or connected to
VCC_OUT or
VCC
if not used.
You need to check the voltage levels and the quality of the vehicle signals. They may be of different voltage
levels, for example 12V nominal with a certain degree of variation. Use of optocouplers or other approved EMI
protection and filtering is strongly recommended.
If no direction signal is available, the direction must be set to forward by configuring the meaning of the
direction pin appropriately, otherwise DR positioning will be incorrect due to the wrong direction. GPS
only navigation is not affected by this configuration.
As the forward/backward direction signal is not available in all cars, try to make use of the reverse gear
light.
Pin
Signal name Direction
Usage
21
FWD
Input
Direction indication (1 = forward)
Table 12: LEA-6R Forward / Backward indication