SI4464 Datasheet, PDF (42/56 Pages) Silicon Laboratories – HIGH-PERFORMANCE

Si4464/63/61/60
Table 15. WUT Specific Commands and Properties
API Properties
GLOBAL_WUT_CONFIG
GLOBAL_WUT_M_15_8
GLOBAL_ WUT_M_7_0
GLOBAL_WUT_R
GLOBAL_WUT_LDC
Description
GLOBAL WUT configuration
Sets HW WUT_M[15:8]
Sets HW WUT_M[7:0]
Sets WUT_R[4:0]
Sets WUT_SLEEP to choose
WUT state
Sets FW internal WUT_LDC
Requirements/Notes
WUT_EN—Enable/disable wake up timer.
WUT_LBD_EN—Enable/disable low battery detect
measurement on WUT interval.
WUT_LDC_EN:
0 = Disable low duty cycle operation.
1 = RX LDC operation
treated as wake up START_RX
WUT state is used
2 = TX LDC operation
treated as wakeup START_TX
WUT state is used
CAL_EN—Enable calibration of the 32 kHz RC
oscillator
WUT_CAL_PERIOD[2:0]—Sets calibration period.
WUT_M—Parameter to set the actual wakeup time.
See equation above.
WUT_M—Parameter to set the actual wakeup time.
See equation above.
WUT_R—Parameter to set the actual wakeup time.
See equation above.
WUT_SLEEP:
0 = Go to ready state after WUT
1 = Go to sleep state after WUT
WUT_LDC—Parameter to set the actual wakeup
time. See equation in "8.2. Low Duty Cycle Mode
(Auto RX Wake-Up)" on page 43.
Table 16. WUT Related API Commands and Properties
Command/Property
INT_CTL_ENABLE
INT_CTL_CHIP_ENABLE
GLOBAL_CLK_CFG
GPIO_PIN_CFG
START_RX/TX
Description
Requirements/Notes
WUT Interrupt Enable
Interrupt enable property
CHIP_INT_STATUS_EN—Enables chip status
interrupt.
Chip interrupt enable property ^{WUT_EN—Enables WUT interrupt.}
32 kHz Clock Source Selection
Clock configuration options
CLK_32K_SEL[2:0]—Configuring the source of
WUT.
WUT Interrupt Output
Host can enable interrupt on ^{GPIOx_MODE[5:0] = 14 and}
WUT expire
NIRQ_MODE[5:0] = 39.
RX/TX Operation
START RX/TX when wake up
timer expire
START = 1.
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Rev 1.2