mrf89xa Microchip Technology Inc., mrf89xa Datasheet - Page 8

• Manufacturer Part Number: mrf89xa
• Description: Ultra-low Power, Integrated Ism Band Sub-ghz Transceiver
• Manufacturer: Microchip Technology Inc.

FIGURE 1-1:
RFIO
X
For General Biasing
Transmission Block
MRF89XA SIMPLIFIED BLOCK DIAGRAM
Reception Block
LNA
PA
DVRS
Second
Mixers
Mixers
Stage
Stage
First
x
Supply
Supply
Block
LO1 RX
LO1 TX
Q
I
x
IF Gain
Mixers
Stage
First
PARS
AVRS
VCORS
LO2 TX
Q
I
Second
Stage
Mixers
Synthesis Block
Interpolation Filters)
Frequency
(DDS, DACs,
Modulation
LO2 RX
Q
I
x
Crystal
Amplification
Filtering/
(Comparator, VCO,
RSSI
Filter, Dividers)
x
PLL Block
Loop Filter
x
Phase Shift to Frequency Shift
Conversion (FSK mode)
x
Demodulator
Demodulator
Post-demodulator
Sync Word
Demodulator
OOK
FSK
Digital
FIFO
LO1 TX
LO1 RX
LO2 TX
LO2 RX
Interface
Control
X
X
X
X
X
X
SPI
DATA
IRQ1
IRQ0
CLKOUT
PLOCK