Single-Chip Low Cost Low Power RF-Transceiver (Rev. A)

CC25000x10: MDMCFG4 – Modem configurationBit Field Name Reset R/W Description7:6 CHANBW_E[1:0] 2 (10) R/W5:4 CHANBW_M[1:0] 0 (00) R/W Sets the decimation ratio for the delta-sigma ADC input streamand thus the channel bandwidth.BWchannelfXOSC=8 ⋅ (4 + CHANBW _ M )·2CHANBW _ EThe default values give 203 kHz channel filter bandwidth,assuming a 26.0 MHz crystal.3:0 DRATE_E[3:0] 12 (1100) R/W The exponent of the user specified symbol rate0x11: MDMCFG3 – Modem configurationBit Field Name Reset R/W Description7:0 DRATE_M[7:0] 34 (0x22) R/W The mantissa of the user specified symbol rate. The symbolrate is configured using an unsigned, floating-point numberwith 9-bit mantissa and 4-bit exponent. The 9 th bit is a hidden‘1’. The resulting data rate is:R( 256 + DRATE _ M )DATA=282⋅ 2DRATE _ E⋅ fXOSCThe default values give a data rate of 115.051 kbps (closestsetting to 115.2 kbps), assuming a 26.0 MHz crystal.PRELIMINARY Data Sheet (Rev.1.2) SWRS040A Page 60 of 83