LPWA Module Series
BG952A-GL_QuecOpen_Hardware_Design
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4. Upgrade firmware via CLI UART interface.
3.6. Power Saving Mode
*
With different power modes configured in MAP and MCU, power management processor (PMP) selects
the proper system modes accordingly. The table below shows the maximum device sleep level per
different MAP-MCU power mode combinations.
Table 8: Maximum Device Sleep Level of MAP-MCU Mode Combinations
1. In recovery mode, pin 25 functions as CLI_RTS and pin 26 functions as CLI_CTS, while in other
modes they are GPIO pins.
2. Since the baud rate of the serial port required to download firmware to the baseband chip is 3 Mbps,
the flow control pins of the CLI serial port need to be reserved. Otherwise, you can only download with
a 921600 baud rate, which is very slow. It is recommended to reserve the test points of the CLI UART
interface, including pin 25, pin 26, pin 94 and pin 95, and keep pin 94 close to pin 95.
3. Ensure that VBAT remains stable for at least 100 ms before pulling down PWRKEY.
-
MCU
Nomal
Stop
Standby
Shutdown
MAP
Normal
MCU active
MAP normal
MAP sleep
MAP sleep
Sleep
MCU active
MAP normal
MAP sleep
MAP sleep
PSM
MCU active
MAP normal
MAP sleep
MAP PSM
NOTE
Содержание QuecOpen BG952A-GL
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