Data Sheet
Pmod NAV Reference Manual
Copyright Digilent, Inc. All rights reserved.
Other product and company names mentioned may be trademarks of their respective owners.
Page 2 of 3
measure the angular rotation rate of the module, indicating the degrees per second that the module is being
rotated around each axis.
The magnetometer detects the magnetic field present around the module, including both the earth's magnetic
field as well as the local magnetic environment around it. Each of the three magnetic axis registers provide signed
16-bit full-scale data with up to ±16 gauss sensitivity. Before using the magnetometer, users should run a
calibration routine (available in the code example on the Pmod NAV Resource Center) to correct for any hard iron
biases that may be present around them.
The final component on the Pmod NAV is a barometer with an absolute pressure range of 260 to 1260 hPa which is
approximately equivalent to 0.25 to 1.25 atm. Note that as a piezoresistive pressure sensor on the Pmod NAV, you
can only measure air pressure with the barometer rather than being able to also measure water pressure.
3 Pin Description Tables
Pin
Signal
Description
1
CS_A/G
Chip select for Accel/Gyro
2
SDI
Master Out Slave In (MOSI)
3
SDO
Master In Slave Out (MISO)
4
SPC
Serial Clock
5
GND
Power Supply Ground
6
VCC
Power Supply (3.3V/5V)
7
INT
Interrupt pin for all components
8
DRDY_M
Data ready for the Magnetometer
9
CS_M
Chip Select for the Magnetometer
10
CS_ALT
Chip Select for the Altimeter
11
GND
Power Supply Ground
12
VCC
Power Supply (3.3V/5V)
Table 1. Header J1 pin descriptions.
Pin
Signal
Description
1
INT_M
Interrupt for the Magnetometer
2
INT_ALT
Interrupt for the Altimeter
Table 2. Header J2 pin descriptions.
Pin
Signal
Description
1
INT1_A/G
Interrupt 1 for Altimeter/Gyroscope
2
DEN_A/G
Data Enable for Altimeter/Gyroscope
Table 3. Header JP1 pin descriptions.
The Pmod NAV reports to the host board when users bring the appropriate chip select line low to then read the
data from the registers on the LSM9DS1.
Any external power applied to the Pmod NAV must be within 1.9V and 3.6V; however, it is recommended that
Pmod is operated at 3.3V.