Texas Instruments CC1101 User Manual

CC1101
SWRS061H Page 78 of 98
0x13: MDMCFG1– Modem Configuration
Bit
Field Name
Reset
R/W
Description
7
FEC_EN
0
R/W
Enable Forward Error Correction (FEC) with interleaving for packet
payload
0 = Disable
1 = Enable (Only supported for fixed packet length mode, i.e.
PKTCTRL0.LENGTH_CONFIG=0)
6:4
NUM_PREAMBLE[2:0]
2 (010)
R/W
Sets the minimum number of preamble bytes to be transmitted
Setting
Number of preamble bytes
0 (000)
2
1 (001)
3
2 (010)
4
3 (011)
6
4 (100)
8
5 (101)
12
6 (110)
16
7 (111)
24
3:2
R0
Not used
1:0
CHANSPC_E[1:0]
2 (10)
R/W
2 bit exponent of channel spacing
0x14: MDMCFG0– Modem Configuration
Bit
Field Name
Reset
R/W
Description
7:0
CHANSPC_M[7:0]
248 (0xF8)
R/W
8-bit mantissa of channel spacing. The channel spacing is
multiplied by the channel number CHAN and added to the base
frequency. It is unsigned and has the format:
 
ECHANSPC
XOSC
CHANNEL
MCHANSPC
f
f
_
18
2_256
2

The default values give 199.951 kHz channel spacing (the closest
setting to 200 kHz), assuming 26.0 MHz crystal frequency.

Texas Instruments CC1101 Specifications

General

Brand	Texas Instruments
Model	CC1101
Category	Transceiver
Language	English