2.9.8 System Self-Check and Calibration

During the system self-check and calibration procedure, up to four tune and check tasks can be executed in sequence, as shown in the following figure.

Figure 2-30. System Self-Check and Calibration Flow

Each task can be separately deactivated or activated by manipulating the associated bit in the eepTrxCal.calConf1 EEPROM setting.


Address	Name	Bit 7	Bit 6	Bit 5	Bit 4	Bit 3	Bit 2	Bit 1	Bit 0
0x001C	calConf1	—	EN_TEMP_MEAS	EN_SRCCAL	EN_FRCCAL	—	—	—	EN_REGREFRESH

A system self-check and calibration process can be triggered at the following time points:

During PollingMode at regular intervals if the eepTrxCal.selfChk.SC variable is unequal to “0x00” (see Self Check).


Address	Name	Bit 7	Bit 6	Bit 5	Bit 4	Bit 3	Bit 2	Bit 1	Bit 0
0x001E	selfChk	SC[7:0]

From IDLEMode via the “Calibrate and Check” SPI command if the EN_SELFCHECK bit in tuneCheckConfig is set to ‘1’ (see Calibrate and Check).


Name	Bit 7	Bit 6	Bit 5	Bit 4	Bit 3	Bit 2	Bit 1	Bit 0
tuneCheckConfig	EN_ANT_TUNE	EN_TEMP_MEAS	EN_SRCCAL	EN_FRCCAL	EN_VCOCAL	—	EN_SELFCHECK	—

See the relevant sections for more information about the supported tasks.

Setting the SELFCHECK bit to ‘1’ within the eepEventConf.cmdRdyConf command-ready variable raises a command-ready (CMD_RDY) event on the PB6 event pin after the system self-check and calibration process finishes.


Address	Name	Bit 7	Bit 6	Bit 5	Bit 4	Bit 3	Bit 2	Bit 1	Bit 0
0x0096	cmdRdyConf	ANT_TUNE	TEMP_MEAS	SRC_CAL	FRC_CAL	VCO_CAL	RF_CAL	SELFCHECK	TX