NXP Semiconductors MKW01Z128, Reference Manual, Page: 115 / 884

Transceiver Digital Control and Communications
MKW01xxRM Reference Manual, Rev. 3, 04/2016
7-28 Freescale Semiconductor, Inc.
RegAfcFei
(0x1E) 7 - r 0 unused
6 FeiDone r 0 0

FEI is on-going
1

FEI finished
5 FeiStart w 0 Triggers a FEI measurement when set. Always
reads 0.
4 AfcDone r 1 0

AFC is on-going
1

AFC has finished
3 AfcAutoclearOn rw 0 Only valid if AfcAutoOn is set
0

AFC register is not cleared before a new AFC
phase
1

AFC register is cleared before a new AFC
phase
2 AfcAutoOn rw 0 0

AFC is performed each time AfcStart is set
1

AFC is performed each time RX mode is
entered
1 AfcClear w 0 Clears the AfcValue if set in RX mode. Always
reads 0
0 AfcStart w 0 Triggers an AFC when set. Always reads 0.
RegAfcMsb
(0x1F) 7-0 AfcValue(15:8) r 0x00 MSB of the AfcValue, 2’s complement format
RegAfcLsb
(0x20) 7-0 AfcValue(7:0) r 0x00 LSB of the AfcValue, 2’s complement format
Frequency correction = AfcValue x Fstep
RegFeiMsb
(0x21) 7-0 FeiValue(15:8) r - MSB of the measured frequency offset, 2’s
complement
RegFeiLsb
(0x22) 7-0 FeiValue(7:0) r - LSB of the measured frequency offset, 2’s
complement
Frequency error = FeiValue x Fstep
RegRssiConfig
(0x23) 7-2 - r 000000 unused
1 RssiDone r 1 0

RSSI is on-going
1

RSSI sampling is finished, result available
0 RssiStart w 0 Trigger a RSSI measurement when set. Always
reads 0.
RegRssiValue
(0x24) 7-0 RssiValue r 0xFF Absolute value of the RSSI in dBm, 0.5dB steps.
RSSI = -
RssiValue/2 [dBm]
Table 7-7. Receiver Registers (continued)