CC1110Fx / CC1111Fx
SIDLE
Default state when the radio is not
receiving or transmitting.
Idle
SCAL
Used for calibrating frequency
synthesizer upfront (entering
receive or transmit mode can
then be done quicker).
Transitional state.
Manual freq.
synth. calibration
SRX or STX or SFSTXON
Frequency
synthesizer startup,
optional calibration,
settling
Frequency synthesizer is turned on, can optionally
be calibrated, and then settles to correct frequency.
Transitional state
SFSTXON
Frequency synthesizer is on,
ready to start transmitting.
Transmission starts very
quickly after receiving the
STX command strobe.
Frequency
synthesizer on
STX
SRX
STX
TXOFF_MODE=01
SFSTXON or RXOFF_MODE=01
STX or RXOFF_MODE=10
SRX or TXOFF_MODE=11
Transmit mode
Receive mode
TXOFF_MODE=00
RXOFF_MODE=00
Optional transitional state.
Transmission is
turned off and this
state is entered if
the RFD register
becomes empty in
the middle of a
packet.
Reception is turned
off and this state is
entered if the RFD
register overflows.
TX Overflow
RX Overflow
Optional freq.
synth. calibration
SIDLE
SIDLE
Typ. current
consumption:
1.8 mA
Idle
Figure 47: Simplified State Diagram with Typical Usage and Current Consumption in Radio at 250
kBaud Data Rate and MDMCFG2.DEM_DCFILT_OFF=1(current optimized)
SWRS033E
Page 186 of 239
TAOS [ TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS ]
