CC2510FX Datasheet, PDF (227/253 Pages) List of Unclassifed Manufacturers – True System-on-Chip with Low Power RF Transceiver and 8051 MCU

CC2510Fx / CC2511Fx
0xDF0F: MDMCFG1 – Modem configuration
Bit Field Name
Reset
R/W Description
7 FEC_EN
0
6:4 NUM_PREAMBLE[2:0] 010
3:2 -
0
1:0 CHANSPC_E[1:0]
10
R/W Enable Forward Error Correction (FEC) with interleaving for
packet payload
0 = Disable
1 = Enable
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
R0 Reserved
R/W 2 bit exponent of channel spacing
Bit Field Name
7:0 CHANSPC_M[7:0]
0xDF10: MDMCFG0 – Modem configuration
Reset
R/W Description
0xF8
R/W 8-bit mantissa of channel spacing (initial 1 assumed). The
channel spacing is multiplied by the channel number CHAN and
added to the base frequency. It is unsigned and has the format:
( ) ∆f_CHANNEL =
f _XOSC
2 ¹⁸
⋅
256 + CHANSPC
_M
⋅ 2^{CHANSPC _ E} ⋅ CHAN
The default values give 199.951kHz channel spacing (the
closest setting to 200kHz), assuming 26.0MHz crystal
frequency.
CC2510Fx/CC2511Fx PRELIMINARY Data Sheet (Rev. 1.2) SWRS055A Page 227 of
252