Command Strobe/CSMA-CA Processor
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Opcode: 0xE9
7 6 5 4 3 2 1 0
1 1 1 0 1 0 0 1
23.14.9.38 ISTXONCCA
Function: Enable calibration and TX if CCA indicates a clear channel
Description: The ISTXONCCA instruction immediately enables TX after calibration if CCA indicates a
clear channel.
Operation: STXONCCA
Opcode: 0xEA
7 6 5 4 3 2 1 0
1 1 1 0 1 0 1 0
23.14.9.39 ISSAMPLECCA
Function:
Sample the current CCA value to SAMPLED_CCA
Description:
The current CCA value is immediately written to SAMPLED_CCA in XREG.
Operation: SSAMPLECCA
Opcode: 0xEB
7 6 5 4 3 2 1 0
1 1 1 0 1 0 1 1
23.14.9.40 ISRFOFF
Function: Disable RX/TX and frequency synthesizer.
Description: The ISRFOFF instruction immediately disables RX/TX and the frequency synthesizer.
Operation: FFCTL_SRFOFF_STRB = 1
Opcode: 0xEF
7 6 5 4 3 2 1 0
1 1 1 0 1 1 1 1
23.14.9.41 ISFLUSHRX
Function: Flush RXFIFO buffer and reset demodulator
Description: The ISFLUSHRX instruction immediately flushes the RXFIFO buffer and resets the
demodulator.
Operation: SFLUSHRX
Opcode: 0xED
7 6 5 4 3 2 1 0
1 1 1 0 1 1 0 1
264
CC253x Radio SWRU191C–April 2009–Revised January 2012
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