CC2510FX Datasheet, PDF (218/244 Pages) List of Unclassifed Manufacturers – True System-on-Chip with Low Power RF Transceiver and 8051 MCU

C2510Fx / CC2511Fx
0xDF0F: 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. FEC is only supported for fixed packet length mode, i.e.
PKTCTRL0.LENGTH_CONFIG=0
0
Disable
1
Enable
6:4 NUM_PREAMBLE[2:0] 010
R/W
Sets 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]
10
R/W 2 bit exponent of channel spacing
0xDF10: MDMCFG0 – Modem Configuration
Bit Field Name
Reset R/W Description
7:0 CHANSPC_M[7:0]
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 _ref
2¹⁸
⋅ 256 + CHANSPC _ M
⋅ 2^{CHANSPC _ E}
The default values give 199.951 kHz channel spacing when f_Ref = 26
MHz and 184.570 kHz when f_Ref = 24 MHz.
0xDF11: DEVIATN – Modem Deviation Setting
Bit Field Name
Reset R/W Description
7
-
R0
Not used
6:4 DEVIATION_E[2:0]
100
R/W Deviation exponent
3
-
R0
Not used
2:0 DEVIATION_M[2:0]
111
R/W When MSK modulation is enabled:
Sets fraction of symbol period used for phase change. Refer to the
SmartRF^® Studio software [8] for correct DEVIATN setting when using
MSK.
When 2-FSK/GFSK modulation is enabled:
Deviation mantissa, interpreted as a 4-bit value with MSB implicit 1. The
resulting deviation is given by:
f _dev
=
f _ref
2¹⁷
⋅ (8 + DEVIATION
_ M ) ⋅ 2^{DEVIATION _ E}
The default values give ±47.607kHz deviation when f_Ref = 26 MHz and
43.945 kHz when f_Ref = 24 MHz.
SWRS055D
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