CC2500RGPR Datasheet, PDF (39/99 Pages) Texas Instruments – Low-Cost Low-Power 2.4 GHz RF Transceiver

CC2500
19 Radio Control
MANCAL
3,4,5
CAL_ COMPLETE
SIDLE
SPWD | SWOR
SLEEP
0
SCAL
IDLE
1
CSn = 0 | WOR
SXOFF
CSn = 0
SRX | STX | SFSTXON | WOR
XOFF
2
FS_ WAKEUP
6,7
FS_ AUTOCAL= 01
&
SRX | STX | SFSTXON | WOR
FS_ AUTOCAL= 00 | 10 | 11
&
SRX | STX | SFSTXON | WOR
CALIBRATE
8
FSTXON
18
SFSTXON
SETTLING
9,10,11
CAL_ COMPLETE
STX
SRX | WOR
TXOFF_ MODE = 10
STX
TXOFF_ MODE=01
SFSTXON | RXOFF_ MODE = 01
SRX
TX
19,20
STX | RXOFF_ MODE = 10
RXTX_ SETTLING
21
( STX | SFSTXON) & CCA
|
RXOFF_ MODE= 01 | 10
RX
13,14,15
RXOFF_ MODE = 11
SRX | TXOFF_ MODE = 11
TXRX_ SETTLING
16
TXFIFO_ UNDERFLOW
TXOFF_ MODE = 00
&
FS_ AUTOCAL= 10 | 11
TXFIFO_UNDERFLOW
22
TXOFF_ MODE = 00
&
FS_ AUTOCAL= 00 | 01
CALIBRATE
12
RXOFF_ MODE= 00
&
FS_ AUTOCAL= 10 | 11
RXFIFO_ OVERFLOW
RXOFF_ MODE = 00
&
FS_ AUTOCAL= 00 | 01
RXFIFO_OVERFLOW
17
SFTX
IDLE
1
SFRX
Figure 15: Complete Radio Control State Diagram
CC2500 has a built-in state machine that is
used to switch between different operation
states (modes). The change of state is done
either by using command strobes or by
internal events such as TX FIFO underflow.
A simplified state diagram, together with
typical usage and current consumption, is
shown in Figure 5 on page 15. The complete
radio control state diagram is shown in Figure
15. The numbers refer to the state number
readable in the MARCSTATE status register.
This register is primarily for test purposes.
19.1 Power-On Start-Up Sequence
When the power supply is turned on, the
system must be reset. One of the following two
sequences must be followed: Automatic
power-on reset (POR) or manual reset.
SWRS040C
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