SX1231-31SKB868-EVAL Semtech, SX1231-31SKB868-EVAL Datasheet - Page 28

• Manufacturer Part Number: SX1231-31SKB868-EVAL
• Description: development tool usb kit for sx1231 transceiver...
• Manufacturer: Semtech

3.5.10. Cordic
The Cordic task is to extract the phase and the amplitude of the modulation vector (I+j.Q). This information, still in the
digital domain is used:
Rev 4 - Nov 2010
ADVANCED COMMUNICATIONS & SENSING
Phase output: used by the FSK demodulator and the AFC blocks.
Amplitude output: used by the RSSI block, for FSK demodulation, AGC and automatic gain calibration purposes.
Magnitude
Figure 8. Cordic Extraction
Real-time
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Q(t)
Real-time Phase
I(t)
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SX1231