MRF24XA_15 Datasheet, PDF (194/258 Pages) Microchip Technology – Low-Power, 2.4 GHz ISM-Band IEEE 802.15.4™ RF

MRF24XA
7.4.2 RX
After the initial negotiation (channel, power, security
key, and so on), the RX node sets the TRXMODE<1:0>
register to 2’b01. The MCU must read the packets from
address 0x300. The switching is handled internally.
Note that MCU must read MRF24XA when the
RXBUFFULL flag is set. In Streaming mode receiving
packets after RXIF do not work. To maximize
throughput, “READ and clear RXBUFFULL” SPI
framing format is recommended.
FIGURE 7-4:
STREAMING RX TIMELINE
Note that RXWRBUF, BUSRDBUF, and RXBUFFUL
signals are the output on the GPIO pins with
GPIOMODE = 1011 settings.
Handling buffer full flag by an additional interrupt is
recommended to avoid constant polling over SPI.
To reach optimal sensitivity, turn Power Save (PSAV)
off.
DS70005023C-page 194
Preliminary
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