MRF24XA_15 Datasheet, PDF (207/258 Pages) Microchip Technology – Low-Power, 2.4 GHz ISM-Band IEEE 802.15.4™ RF

MRF24XA
FIGURE 9-3:
PHYSICAL RECEIVER OPERATION: OVERVIEW
Gain Change
Abort/Reset from
upper layer
Start AGC
Switch Signal Flow to
bit- and byte-aligned
demodulation at the
detected Preamble Air-Data
-Rate; Start SFD detectors;
AGC must hold the gain
Start Digital Demodulator
Preamble
Yes
Acquired?
No
Yes
Preamble Loss?
No
Init SFD
time-out
Yes
SFD detected?
No
No
SFD time-out?
Yes
Switch the signal path to
the detected payload data
rate
No
AGC Level
Triggered?
Yes
Transfer bytes to MAC
No
Yes
Last byte done?
 2015 Microchip Technology Inc.
Preliminary
DS70005023C-page 207