Wakeup Source and Reason

Wakeup Source

RTL8721DxRTL8720ERTL8710ERTL8726ERTL8713ERTL8730E

The following table lists the wakeup sources that can be used to wake up the system under different power modes.

Wakeup source	Sleep CG	Sleep PG	Deep-Sleep	Restriction
WLAN	√	√	X
BT	√	√	X
IPC	√	√	X	Only KM0 can use the IPC to wake up KM4.
Basic Timer4~7	√	√	X
PMC Timer	√	√	X	For internal usage
UART0~2	√	√	X	When using UART as a wakeup source, the Rx clock source can only be OSC2M, and do not turn off OSC4M during sleep. When the baudrate is larger than 115200, it is not recommended to use UART as a wakeup source. The portion of the command used to wake up that exceeds the FIFO depth (64B) will be lost.
LOGUART	√	√	X	When using LOGUART as a wakeup source: If the Rx clock source is XTAL40M, do not turn off XTAL or OSC4M during sleep. If the Rx clock source is OSC2M, do not turn off OSC4M during sleep. The portion of the command used to wake up that exceeds the FIFO depth (16B) will be lost.
GPIO	√	√	X
I2C	√	√	X
CAP_TOUCH	√	√	X
ADC	√	√	X
SDIO	√	√	X
Key-Scan	√	√	X
BOR	√	√	√
PWR_DOWN	√	√	√
AON_TIMER	√	√	√
AON_WAKEPIN	√	√	√
RTC	√	√	√

Wakeup Reason

Note

When wakeup, the corresponding peripheral interrupt will be raised; when clearing the interrupt, the corresponding bit in wakeup reason will also be cleared. Thus it is not possible to get the wakeup reason after the interrupt is cleared.

RTL8721DxRTL8720ERTL8710ERTL8726ERTL8713ERTL8730E

SOCPS_AONWakeReason

Items	Description
Introduction	Get the deep-sleep wakeup reason
Parameter	None
Return	Bit[0]: CHIP_EN short press Bit[1]: CHIP_EN long press Bit[2]: BOR Bit[3]: AON Timer Bit[5:4]: AON GPIO Bit[8]: RTC

WAK_STATUS0

The following register can be used to get the sleep wakeup reason.

Register	Parameters
WAK_STATUS0	Bit[1:0]: WLAN Bit[2]: KM4_WAKE Bit[3]: BT_WAKE_HOST Bit[4]: IPC_KM4 Bit[9:6]: BASIC TIMER4~7 Bit[11:10]: PMC TIMER0~1 Bit[14:12]: UART0~2 Bit[15]: UART_LOG Bit[16]: GPIOA Bit[17]: GPIOB Bit[19:18]:I2C0~1 Bit[20]: Cap-Touch Bit[21]: RTC Bit[22]: ADC Bit[24]: BOR Bit[25]: PWR_DOWN Bit[26]: Key-Scan Bit[27]: AON_Timer Bit[28]: AON_Wakepin Bit[29]: SDIO