CC2500RGPR Datasheet, PDF (82/99 Pages) Texas Instruments – Low-Cost Low-Power 2.4 GHz RF Transceiver

CC2500
0x33 (0xF3): LQI – Demodulator Estimate for Link Quality
Bit Field Name
Reset
R/W Description
7 CRC_OK
6:0 LQI_EST[6:0]
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.
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 39)
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) RXFIFO_OVERFLOW RXFIFO_OVERFLOW
18 (0x12) FSTXON
FSTXON
19 (0x13) TX
TX
20 (0x14) TX_END
TX
21 (0x15) RXTX_SWITCH
RXTX_SETTLING
22 (0x16) TXFIFO_UNDERFLOW TXFIFO_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.
SWRS040C
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