Datasheet

MRF49XA
DS70590C-page 8 Preliminary © 2009-2011 Microchip Technology Inc.
FIGURE 1-1: FUNCTIONAL NODE BLOCK DIAGRAM
FIGURE 1-2: MICROCONTROLLER TO MRF49XA INTERFACE
Matching
Circuitry
Antenna
10 MHz
MCU
Interface
RFP
RFN
MRF49XA
Power
Management
Memory
PA/LNA
and
PLL/CLK
Block
RF Block
Baseband
Amplifier/
Filter/
Limiter
Data
Processing
Unit
SPI
Signals
Other
Handshaking
Signals
SDO
SDI
SCK
I/O
I/O
PIC
®
MCU
SDI
SDO
SCK
I/O
CLKOUT*
OSC1
IRO
RCLKOUT/FCAP/FINT*
I/O
MRF49XA
* Implies optional signals.
CS
__
INT
I/O/SS
RESET*
INT/DIO*
FSK/DATA/FSEL*