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2020, REYAX TECHNOLOGY CO., LTD.
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RYS8830 RYS8833
`GNSS Module Software Guide
Operation states
The operation status of the RYS8830 has five states, and the RYS8830 transits between these states as
shown in Fig.
Fig Transition between the RYS8830 states
Each of the states is defined below.
Sleep 0
In this state, the power is supplied only to CPU, RAM, the backup RAM and real-time clock. CPU is in WFI state.
The program and data in RAM and clock are retained. After wakeup, the program re-starts with previous status
before entered sleep.
Sleep 1
In this state, the power is supplied only to the backup RAM and real-time clock. The real-time clock continues to
operate, and the values in the backup RAM (where the receiver position, ephemeris, almanac, TCXO offset value,
etc. are stored) are retained so the conditions required for hot start are retained. After wakeup, the program is
rebooted.
Sleep 2
In this state, the power of all the blocks except for the real-time clock has been turned off so the power
consumption is the lowest. The real-time clock continues to operate so the time is retained. After wakeup, the
program is rebooted.
Idle
In this state, the power of all the blocks is supplied, and the GPS operation is stopped.
Exec
In this state, the power of all the blocks is supplied, and the GPS positioning operation is underway. Some
blocks may be turned off depending on the conditions of positioning operation and satellite signal.
Transitions from one state to another can be initiated by issuing commands from the host controller.
When GPS has started positioning and the Low Power mode has been selected as the operation mode, the
receiver state is being selected automatically to minimize the power consumption.
