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AN149 

Rev 1.0 | 1/12

 

www.cmostek.com

 

 

 

 

 

 

 

Overview 

 

This    document    introduces    the    RF    parameter    configuration,    OOK    and    FSK    modulation    parameter  configuration 

for CMT2300AW RFPDK. 

 

The product models covered in this document are shown in the table below. 

 

Table 1. Product Models Covered in This Document 

Part No.

 

Frequency

 

Modem

 

Function

 

Configuration

 

Package

 

CMT2300AW 

127 - 1020MHz 

(G)FSK/OOK 

Transceiver 

Register 

QFN16 

 

Before reading this document, it is recommended to read 

AN142-CMT2300AW Quick Start Guideline 

to learn the basic usage of 

CMT2300AW. 

 

 

AN149 

CMT2300AW RF Parameter Configuration Guideline 

Copyright 

©

 By CMOSTEK   

Summary of Contents for CMT2300AW

Page 1: ...ocument are shown in the table below Table 1 Product Models Covered in This Document Part No Frequency Modem Function Configuration Package CMT2300AW 127 1020MHz G FSK OOK Transceiver Register QFN16 B...

Page 2: ...Parameter Configuration 3 1 1 Basic Parameter Configuration 3 1 2 OOK Demodulation Configuration 4 1 3 FSK Demodulation Configuration 5 1 4 CDR Design Index and Mode Selection 6 1 5 Register Classific...

Page 3: ...ly speaking the following 3 points are recommended when configuring the Deviation 1 4kHz Deviation 200 kHz and Symbol rate 0 5 Deviaiton 250 kHz 2 Symbol rate 0 25 Deviation that is the modulation ind...

Page 4: ...ate correctly usually 10 20 symbols The advantage is that the demodulation effect will not be affected if there is a spike mutation in the packet a sudden abrupt increase in amplitude The experience i...

Page 5: ...to open AFC Method AFC method Recommend selecting the Auto Select CDR Type In the packet mode the user needs to detect Preamble or Sync The symbol rate clock recovery function has to be turned on and...

Page 6: ...nfigurations in RFPDK Users do not have to select CDR_DET_SEL Automatically select in conjunction with other configurations in RFPDK Users do not have to select CDR_AVG_SEL 2 0 Automatically select in...

Page 7: ...ol length for the CDR 0 6 3 Symbol rate range 5 9 to 6 7 1 9 4 Symbol rate range 8 6 to 10 4 2 12 5 Symbol rate range 11 1 to 14 3 3 15 6 Symbol rate range 13 5 to 18 5 1 0 RW CDR_MODE 1 0 CDR working...

Page 8: ...a few ten thousandths This is often because the TX and RX configuration and the mechanism of computing the symbol rate are more advanced such as using a variety of high end TRX products 2 The symbol r...

Page 9: ...ng to the configuration of the symbol rate When the symbol rate is less than or equal to 50 kHz the TRACING system is selected The system can not only realize the tracking but also correctly sample th...

Page 10: ...here is an acceptable tradeoff and choice whether to slow down the tracking speed 1 5 Register Classification and Use in the Tx Bank Usually the register of the Tx bank is entirely generated by the RF...

Page 11: ...e 7 Revise History Records Version No Chapter Description Date 0 8 All Initial release 2017 03 24 0 9 All Add the advice to read AN142 Modify individual typos 2017 07 12 1 0 All Update RFPDK screensho...

Page 12: ...for inaccuracies and specifications within this document are subject to change without notice The material contained herein is the exclusive property of CMOSTEK and shall not be distributed reproduce...

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