xe1205 Semtech Corporation, xe1205 Datasheet - Page 2

• Manufacturer Part Number: xe1205
• Description: Low-power, High Link Budget Integrated Uhf Transceiver
• Manufacturer: Semtech Corporation

© Semtech 2007
1
2
3
4
4.1
4.2
4.2.1
4.2.2
5
5.1
5.2
5.2.1
5.2.2
5.2.3
5.2.4
5.2.5
5.2.6
5.3
5.3.1
5.3.2
5.3.3
5.4
5.4.1
6
6.1
6.1.1
6.1.2
6.1.3
6.2
6.3
6.4
7
7.1
7.1.1
7.1.2
7.2
7.2.1
7.2.2
7.2.3
7.2.4
7.2.5
7.2.6
7.2.7
7.2.8
7.3
7.3.1
7.3.2
7.4
7.5
7.6
7.7
8
8.1
8.2
8.3
8.4
8.5
9
Non-conformance ................................................................................................................................................................3
Functional Block Diagram..................................................................................................................................................3
Pin description .....................................................................................................................................................................4
Electrical Characteristics ...................................................................................................................................................5
Absolute Maximum Operating Ranges.................................................................................................................................5
Specifications.........................................................................................................................................................................5
Operating Range ...................................................................................................................................................................5
Electrical Specifications.........................................................................................................................................................5
Description ...........................................................................................................................................................................7
Data Operation Modes ..........................................................................................................................................................7
Receiver section ....................................................................................................................................................................8
LNA & Receiver modes .........................................................................................................................................................8
Interrupt signal mapping........................................................................................................................................................8
Receiver in continuous mode................................................................................................................................................8
DATA pin in bidirectional or unidirectional mode (continuous mode only) ...................................................................... 14
Receiver in buffered mode................................................................................................................................................. 14
Additional narrowband filter bandwidths............................................................................................................................ 17
Transmitter section ............................................................................................................................................................. 18
Output power....................................................................................................................................................................... 18
Transmitter in continuous mode......................................................................................................................................... 18
Transmitter in buffered mode............................................................................................................................................. 20
Frequency synthesizer ....................................................................................................................................................... 21
Clock Output for an external processor............................................................................................................................. 21
Highest Bit RATES: example of 304.7 kbit/s operation .............................................................................................. 22
Registers settings ............................................................................................................................................................... 22
Bitrate (BR) and frequency deviation (fdev)...................................................................................................................... 22
Rx filter ................................................................................................................................................................................ 22
Tx filter................................................................................................................................................................................. 22
Hardware settings............................................................................................................................................................... 23
Operation............................................................................................................................................................................. 23
Typical performance........................................................................................................................................................... 23
Serial interface definition and principle of operation ................................................................................................. 24
Serial Control Interface....................................................................................................................................................... 24
Chip configuration via SPI_CONFIG interface.................................................................................................................. 25
Data transmission and reception via SPI_DATA interface............................................................................................... 26
Configuration and status registers..................................................................................................................................... 28
Configuration register: general description ....................................................................................................................... 28
MCParam configuration register (main configuration parameters) .................................................................................. 29
IRQParam configuration register (IRQ parameters) ......................................................................................................... 30
TXParam configuration register (transmitter configuration parameters) ......................................................................... 31
RXParam configuration register (receiver configuration parameters) ............................................................................. 31
Pattern register ................................................................................................................................................................... 33
OSCParam configuration register (oscillator parameters) ............................................................................................... 34
ADParam configuration register (additional settings) ....................................................................................................... 35
Operating Modes ................................................................................................................................................................ 36
XE1205 switching time using SPI_CONFIG interface...................................................................................................... 36
XE1205 switching time using SW(1:0) pins. ..................................................................................................................... 38
Selection of the reference frequency................................................................................................................................. 38
Clock output interface......................................................................................................................................................... 39
Default settings at power-up .............................................................................................................................................. 39
Pad configuration versus chip modes................................................................................................................................ 40
Application information ................................................................................................................................................... 41
Matching network of the receiver ....................................................................................................................................... 41
Matching network of the transmitter .................................................................................................................................. 41
VCO tank............................................................................................................................................................................. 44
Loop filter of the frequency synthesizer............................................................................................................................. 45
Reference crystal for the frequency synthesizer............................................................................................................... 46
Packaging information..................................................................................................................................................... 47
TABLE OF CONTENTS
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XE1205
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