SL876Q5-A
Product User Guide
1VV0301333 Rev. 2
Page 25 of 68
2017-06-27
Internal LNA
The module has an adjustable gain LNA internal to the GNSS device.
An additional LNA is in the module circuit for the built-in chip antenna. It is not in the circuit for
an external antenna.
Internal antenna LNA power is controlled by the
LNA Enable
output line. This line may also
be used to control the external antenna LNA power (when
Internal / nExternal_Ant_Enable
is active).
Device Wake-up (1
st
port)
The module will wake up from a commanded HIBERNATE state if the ON_OFF signal remains
high and there is data traffic on serial port 0 (first port). The wake-up message will not be acted
upon since the receiver is not operating until after wake-up.
See
section 8.8.1 Primary Host Port Configuration
MEMS Wakeup (2nd Port - I2C)
If the 2
nd
port is operating as I
2
C, the module can configure a Kionix KXCJ9 MEMS accelerometer to
generate a signal when a threshold is exceeded. This signal can be connected to a GPIO external
interrupt which will cause the module to wake up from a low power state. Use of this feature will require
a custom configured firmware build. See
section 8.8.2 Secondary Host Port Configuration
Please contact Telit support for further details.
Host I/O Ports
The primary host port (TX / RX) can be configured to communicate using UART, I
2
C, or SPI
interface.
The secondary host port (TX1 / RX1) can be configured to communicate using UART or I
2
C
interface.
See
Section 8.8 Host I/O Ports - Configuration and Operation
for details.
Summary of Contents for SL876Q5-A
Page 1: ...SL876Q5 A Product User Guide 1VV0301333 Rev 2 2017 06 27...
Page 68: ......
