CC2500RGPR Datasheet, PDF (66/99 Pages) Texas Instruments – Low-Cost Low-Power 2.4 GHz RF Transceiver

CC2500
Bit Field Name
7:6 CHANBW_E[1:0]
5:4 CHANBW_M[1:0]
3:0 DRATE_E[3:0]
0x10: MDMCFG4 – Modem Configuration
Reset
R/W Description
2 (10)
0 (00)
12 (1100)
R/W
R/W Sets the decimation ratio for the delta-sigma ADC input stream
and thus the channel bandwidth.
BW_channel

f _XOSC
8  (4  CHANBW _ M )·2^{CHANBW _ E}
The default values give 203 kHz channel filter bandwidth,
assuming a 26.0 MHz crystal.
R/W The exponent of the user specified symbol rate
Bit Field Name
7:0 DRATE_M[7:0]
0x11: MDMCFG3 – Modem Configuration
Reset
R/W Description
34 (0x22)
R/W The mantissa of the user specified symbol rate. The symbol
rate is configured using an unsigned, floating-point number
with 9-bit mantissa and 4-bit exponent. The 9^th bit is a hidden
‘1’. The resulting data rate is:
  _{RDATA }
256  DRATE _ M
2²⁸
 2^{DRATE _ E} _{ f XOSC}
The default values give a data rate of 115.051 kBaud (closest
setting to 115.2 kBaud), assuming a 26.0 MHz crystal.
SWRS040C
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