
MRF89XA
3.0
FUNCTIONAL DESCRIPTION
The functional block diagram of the MRF89XA is
illustrated in Figure 3-1 . The functional operations of
individual blocks are explained in subsequent sections.
FIGURE 3-1:
MRF89XA FUNCTIONAL BLOCK DIAGRAM
PARS
RFIO
PA
I
LO1 TX
I
Q
LO2 TX
Waveform
Generator
Q
I
Q
LO2 TX
RSSI
LNA
LO2 RX
OOK
Demod
FSK
Demod
BitSync
Control
IRQ0
IRQ1
SDI
SDO
SCK
CSCO N
LO1 RX
LO1 RX
CSDAT
CLKOUT
DATA
TEST<8:0>
OSC1
OSC2
XO
Frequency Synthesizer
LO
I LO2 RX
Q
PLOCK
Generator
I
Q
I
Q
LO1 TX
LO2 TX
? 2010–2011 Microchip Technology Inc.
Preliminary
DS70622C-page 55