CC2500_06 Datasheet, PDF (76/84 Pages) Texas Instruments – Single Chip Low Cost Low Power RF Transceiver

CC2500
Bit Field Name
7 CRC_OK
6:0 LQI_EST[6:0]
0x33 (0xF3): LQI – Demodulator estimate for Link Quality
Reset
R/W Description
R
The last CRC comparison matched. Cleared when
entering/restarting RX mode. Only valid if
PKTCTRL0.CC2400_EN = 1.
R
The Link Quality Indicator estimates how easily a received signal
can be demodulated. Calculated over the 64 symbols following
the sync word (first 8 packet bytes for 2-ary modulation).
Bit Field Name
7:0 RSSI
0x34 (0xF4): RSSI – Received signal strength indication
Reset
R/W Description
R
Received signal strength indicator
0x35 (0xF5): MARCSTATE – Main Radio Control State Machine state
Bit Field Name
Reset
R/W Description
7:5 Reserved
4:0 MARC_STATE[4:0]
R0
R
Main Radio Control FSM State
Value
State name
State (Figure 15, page 35)
0 (0x00) SLEEP
SLEEP
1 (0x01) IDLE
IDLE
2 (0x02) XOFF
XOFF
3 (0x03) VCOON_MC
MANCAL
4 (0x04) REGON_MC
MANCAL
5 (0x05) MANCAL
MANCAL
6 (0x06) VCOON
FS_WAKEUP
7 (0x07) REGON
FS_WAKEUP
8 (0x08) STARTCAL
CALIBRATE
9 (0x09) BWBOOST
SETTLING
10 (0x0A) FS_LOCK
SETTLING
11 (0x0B) IFADCON
SETTLING
12 (0x0C) ENDCAL
CALIBRATE
13 (0x0D) RX
RX
14 (0x0E) RX_END
RX
15 (0x0F) RX_RST
RX
16 (0x10) TXRX_SWITCH TXRX_SETTLING
17 (0x11) RX_OVERFLOW RX_OVERFLOW
18 (0x12) FSTXON
FSTXON
19 (0x13) TX
TX
20 (0x14) TX_END
TX
21 (0x15) RXTX_SWITCH RXTX_SETTLING
22 (0x16) TX_UNDERFLOW TX_UNDERFLOW
Note: it is not possible to read back the SLEEP or XOFF state
numbers because setting CSn low will make the chip enter the
IDLE mode from the SLEEP or XOFF states.
PRELIMINARY Data Sheet (Rev.1.2) SWRS040A
Page 76 of 83