RF60 Datasheet, PDF (38/157 Pages) –

RF60 CRYSTAL-LESS SOC TRANSMITTER v1.0
10.2.2. Modulation, Encoding, and Data Rate
The output data serializer (ODS) API function commands set the modulation type, encoding method, and
data rate of the transmitter. The calculator has the following inputs:
Serializer Setup:
Bit (or Data) Rate (Kbits/s): This is the bit or data rate of the transmitter
Encoding: The encoding methods supported are Manchester, NRZ+4b/5b, and NRZ encoding.
Modulation: OOK or FSK.
FSK Deviation (kHz): This is the FSK frequency deviation of the carrier frequency in response to a data
signal.
Manual Ramp Rate Entry: If Yes, used to set the ramp rate for turning on and off the PA, otherwise the
ramp rate will be automatically calculated
Target Ramp Rate (us): This parameter is the target ramp rate. Only used if the Manual Ramp Rate
Entry is Yes
The outputs of the calculator are the following:
Serializer Control:
Ramp Time (us): The actual ramp time of turning on and off the PA. If Manual Rate Entry is Yes, this will
represent the closest possible match to the user entry. If Manual Rate Entry is No, this is automatically
calculated based on the target bit rate. The chosen rate insures the resulting spectrum will be
FCC/ETSI compliant.
Actual Symbol Rate (ksym/s): The actual symbol rate produced by the chip after taking into account
encoding and quantization effects due to the timers.
Ramp Time / Symbol Rate: The ratio of the ramp time divided by the symbol rate.
API: ODS Setup:
bModulation - value for this API parameter
bClkDrv - value for this API parameter
bEdgeRate - value for this API parameter
bLineCode - value for this API parameter
wBitRate - value for this API parameter
wWarmUpIntervals - value for this API parameter
API: FSK Controls:
wFSK - value for this API parameter
Expected FSK Deviation (kHz): The expected FSK deviation with quantization error
10.2.3. Output Frequency
The output frequency does not require the use of the calculator and is set by using the following API com-
mands:
vFCast_Setup()
vFCast_Tune(desired frequency)
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