CC2430 Datasheet, PDF (189/212 Pages) Texas Instruments – A True System-on-Chip solution for 2.4 GHz IEEE 802.15.4 / ZigBee-TM

RSSIL (0xDF07)
Bit Name
7:0 RSSI_VAL[7:0]
SYNCWORDH (0xDF08)
Bit Name
7:0
SYNCWORD[15:8]
SYNCWORDL (0xDF09)
Bit Name
7:0
SYNCWORD[7:0]
TXCTRLH (0xDF0A)
Bit Name
7:6 TXMIXBUF_CUR[1:0]
5
TX_TURNAROUND
4:3 TXMIX_CAP_ARRAY[1:0]
2:1 TXMIX_CURRENT[1:0]
0
PA_DIFF
Radio : Radio Registers
CC2430
Reset
0x80
R/W
R
Description
RSSI estimate on a logarithmic scale, signed number in 2’s
complement.
Unit is 1 dB, offset is TBD [depends on the absolute gain of
the RX chain, including external components, and should
be measured]. The RSSI value is averaged over 8 symbol
periods.
Reset
0xA7
R/W
R/W
Description
Synchronization word. The SYNCWORD is processed from
the least significant nibble (F at reset) to the most significant
nibble (A at reset).
SYNCWORD is used both during modulation (where 0xF’s
are replaced with 0x0’s) and during demodulation (where
0xF’s are not required for frame synchronization). In
reception an implicit zero is required before the first symbol
required by SYNCWORD.
The reset value is compliant with IEEE 802.15.4.
Reset
0x0F
R/W
R/W
Description
Synchronization word. The SYNCWORD is processed from
the least significant nibble (F at reset) to the most significant
nibble (A at reset).
SYNCWORD is used both during modulation (where 0xF’s
are replaced with 0x0’s) and during demodulation (where
0xF’s are not required for frame synchronization). In
reception an implicit zero is required before the first symbol
required by SYNCWORD.
The reset value is compliant with IEEE 802.15.4.
Reset
10
1
0
0
1
R/W
R/W
R/W
R/W
R/W
R/W
Description
TX mixer buffer bias current.
00 : 690 uA
01 : 980 uA
10 : 1.16 mA (nominal)
11 : 1.44 mA
Sets the wait time after STXON before transmission is
started.
0 : 8 symbol periods (128 us)
1 : 12 symbol periods (192 us)
Selects varactor array settings in the transmit mixers.
Transmit mixers current:
00 : 1.72 mA
01 : 1.88 mA
10 : 2.05 mA
11 : 2.21 mA
Power Amplifier (PA) output select. Selects differential or
single-ended PA output.
0 : Single-ended output
1 : Differential output
CC2430 Data Sheet (rev. 2.1) SWRS036F
Page 189 of 211