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XE1203F
Table of Contents
1
2
3
3.1
3.2
3.2.1
3.2.2
4
4.1
4.1.1
4.1.2
4.1.3
4.1.4
4.1.5
4.1.6
4.1.7
4.1.8
4.2
4.2.1
4.2.2
4.3
4.3.1
5
5.1
5.2
5.2.1
5.2.2
5.2.3
5.2.4
5.2.5
5.2.6
5.2.7
5.2.8
5.3
5.3.1
5.4
5.5
5.6
6
6.1
6.2
6.3
6.4
6.5
7
8
Functional Block Diagram.................................................................................................................. 3
Pin description .................................................................................................................................... 4
Electrical Characteristics ................................................................................................................... 5
Absolute Maximum Operating Ranges ................................................................................................. 5
Specifications ........................................................................................................................................ 5
Operating Range................................................................................................................................... 5
Electrical Specifications ........................................................................................................................ 5
GENERAL DESCRIPTION................................................................................................................... 7
The Receiver Section............................................................................................................................ 7
LNA & Receiver modes......................................................................................................................... 8
Demodulation chain .............................................................................................................................. 8
Demodulator.......................................................................................................................................... 8
Bit synchronizer .................................................................................................................................... 9
The DATA and DATAIN pins .............................................................................................................. 10
Pattern recognition block .................................................................................................................... 10
RSSI.................................................................................................................................................... 10
Frequency Error Indicator – FEI ......................................................................................................... 12
The Transmitter Section...................................................................................................................... 13
Transmitter .......................................................................................................................................... 13
Barker encoder/decoder ..................................................................................................................... 15
The Frequency Synthesizer ................................................................................................................ 16
Clock Output for external processor ................................................................................................... 17
SERIAL Interface definition AND Principles of operation ............................................................ 18
Serial Control Interface ....................................................................................................................... 18
Configuration and Status registers ..................................................................................................... 20
The ConfigSwitch Register ................................................................................................................. 20
RTParam Configuration Register........................................................................................................ 22
FSParam Configuration Register........................................................................................................ 23
SWParam Configuration Register - switching parameters ................................................................. 24
DataOut Status Register ..................................................................................................................... 25
ADParam Configuration Register ....................................................................................................... 25
Pattern register ................................................................................................................................... 27
Test Registers and additional settings................................................................................................ 28
Operating Modes ................................................................................................................................ 28
Standard power up sequence for the receiver and transmitter .......................................................... 28
Selection of the reference frequency .................................................................................................. 29
Clock Output Interface ........................................................................................................................ 30
Default settings at power-up ............................................................................................................... 30
Application Information.................................................................................................................... 31
RECEIVER Matching network ............................................................................................................ 31
Transmitter matching network ............................................................................................................ 31
VCO tank............................................................................................................................................. 34
Loop filter of the frequency synthesizer .............................................................................................. 34
frequency synthesizer Reference crystal............................................................................................ 35
Revision History................................................................................................................................ 36
Packaging information ..................................................................................................................... 37
? Semtech 2008
2
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