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SWRS037B – JANUARY 2006 – REVISED MARCH 2015
Table 5-28. 0x12: MDMCFG2 – Modulator Configuration
BIT
FIELD
TYPE
RESET
DESCRIPTION
7
Reserved
R0
0x0
Defined on the transceiver version (CC1101).
6:4
MOD_FORMAT[2:0]
R/W
0x0
The modulation format of the radio signal:
The binary number is the setting and the result is the
modulation format.
000 = 2-FSK
001 = GFSK
010 = N/A
011 = ASK/OOK
100 = N/A
101 = N/A
110 = N/A
111 = MSK
The OOK/ASK pulse shaping feature is only supported for
output powers up to –1 dBm.
MSK is only supported for data rates above 26 kBaud.
3
MANCHESTER_EN
0
0x0
Enables Manchester encoding/decoding.
0 = Disable
1 = Enable
2:0
SYNC_MODE[2:0]
2
0x2
Combined sync-word qualifier mode.
The values 0 (000) and 4 (100) disables preamble and sync
word transmission. The values 1 (001), 2 (010), 5 (101) and 6
(110) enables 16-bit sync word transmission. The values 3
(011) and 7 (111) enables repeated sync word transmission.
The binary number is the setting and the result is the Sync-
word qualifier mode (for compatibility with the CC1101
transceiver).
000 = No preamble/sync word
001 = 15/16 sync word bits detected
010 = 16/16 sync word bits detected
011 = 30/32 sync word bits detected
100 = No preamble/sync, carrier-sense above threshold
101 = 15/16 + carrier-sense above threshold
110 = 16/16 + carrier-sense above threshold
111 = 30/32 + carrier-sense above threshold
Table 5-29. 0x13: MDMCFG1 – Modulator Configuration
BIT
FIELD
TYPE
RESET
DESCRIPTION
7
FEC_EN
R/W
0x2
Enable Forward Error Correction (FEC) with interleaving
for packet payload
0 = Disable
1 = Enable (Only supported for fixed packet length
mode, that is, PKTCTRL0.LENGTH_CONFIG=0)
6:4
NUM_PREAMBLE[2:0]
R/W
0x2
Sets the minimum number of preamble bytes to be
transmitted.
The binary number is the setting and the result is the
minimum number of preamble bytes to be transmitted.
000 = 2
001 = 3
010 = 4
011 = 6
100 = 8
101 = 12
110 = 16
111 = 24
3:2
R0
Not Used.
1:0
CHANSPC_E[1:0]
R/W
0x2
2 bit exponent of channel spacing.
Copyright © 2006–2015, Texas Instruments Incorporated
Detailed Description
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