SL876Q5-A
Product User Guide
1VV0301333 Rev. 2
Page 23 of 68
2017-06-27
Power Management
The receiver features several operating modes that provide reduced power consumption.
Availability of GNSS signals in the operational environment will be a factor in choosing power
management modes. The designer can choose a mode that provides the best trade-off of
navigation performance versus power consumption.
Each of the power management modes can be commanded using the Power Mode Request
Message (
MID218,6
). Please refer to the SiRFstarV OSP Extensions manual (CS-303979) for
details.
Power Mode
Name
Description
Continuous
Fixes
Full Power
Continuous operation in reporting position
fixes optimized for the best all-around
performance.
SmartGNSS modes save power based on
satellite signal strength.
SiRFSmartGNSS 1
SiRFSmartGNSS 2
Periodic Fixes
Trickle Power
Power cycling: RUN - STANDBY
Push To Fix
Power cycling: RUN - HIBERNATE
SiRFAware
Periodic data collection & updating
No Fixes
Hibernate
Only RTC and BBRAM are powered up.
Table 4-1 Power Management Modes
Full Power Mode
This mode has the highest average power consumption, but it is the most accurate navigation
mode and supports the most dynamic motion scenarios. Full Power is required during initial
satellite acquisition, tracking, & navigation and while receiving SGEE assistance data.
SmartGNSS
SmartGNSS modes are power saving alternatives for GNSS operation while maintaining
complete functionality of the device similar to full power mode.
Summary of Contents for SL876Q5-A
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