CC2500 Datasheet, PDF (34/76 Pages) Texas Instruments – Single Chip Low Cost Low Power 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
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
TX_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
RX_OVERFLOW
17
SFTX
IDLE
1
SFRX
Figure 11: 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 4 on page 13. The complete
radio control state diagram is shown in Figure
11. The numbers refer to the state number
readable in the MARCSTATE status register.
This register is primarily for test purposes.
Preliminary Data Sheet (rev.1.1.) SWRS040
Page 34 of 77