CMOSTEK CMT2300A Quick Start Manual
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CMOSTEK CMT2300A Quick Start Manual

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CMT2300A / CMT2119B / CMT2219B 射频频率计算指南
概要
This document discusses the RF frequency calculation formula for CMT2300A / CMT2119B / CMT2219B, which
helps on user design and applications.
The product models covered in this document are shown in the below table.
Table 1. Product Models Covered in This Document
产品型号
CMT2300A
126.33 - 1020 MHz
CMT2119B
126.33 - 1020 MHz
CMT2219B
126.33 - 1020 MHz
Before reading this document, it is recommended to read the
AN184-CMT2119B
Quick Start Guide to understand the basic information of the 3 products.
目录
射频频率计算 ............................................................................................................... 错误！未定义书签。
1.
1.1 配置 RX 的射频参数 ............................................................................................. 错误！未定义书签。
1.2 配置 TX 的射频参数 ............................................................................................................................ 5
文档变更记录 ............................................................................................................................................. 7
2.
联系方式 ..................................................................................................................................................... 8
3.
Copyright © By CMOSTEK
工作频率
调制方式
(G)FSK/OOK
(G)FSK/OOK
(G)FSK/OOK
主要功能
Transceiver
Transmitter
Receiver
AN142-CMT2300A
Rev 0.8 | Page 1/8
AN199
AN199
配置方式
封装
Register
QFN16
Register
QFN16
Register
QFN16
Quick Start Guide and
www.cmostek.com

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Summary of Contents for CMOSTEK CMT2300A

  • Page 1 CMT2300A / CMT2119B / CMT2219B 射频频率计算指南 概要 This document discusses the RF frequency calculation formula for CMT2300A / CMT2119B / CMT2219B, which helps on user design and applications. The product models covered in this document are shown in the below table.
  • Page 2 Among them, N is the integer part of the frequency word, K is the fractional part of the frequency word, DIVX CODE is used to select the division factor of the PLL, and VCO BANK is used to select the operating www.cmostek.com Rev 0.8 | Page 2/8...
  • Page 3 AFC algorithm, it is calculated based on the parameters of receivers such as RX RF frequency, data rate, deviation, and crystal PPM. RFPDK will complete this calculation and display it on the UI screen as follows. www.cmostek.com Rev 0.8 | Page 3/8...
  • Page 4 K is 66.80040135. is 66 and the corresponding binary is 01000010. FREQ_RX_K <19:0> is 839282 and the corresponding in RFPDK. To configure the TX frequency, you need to configure: www.cmostek.com Rev 0.8 | Page 4/8...
  • Page 5 举个例子，如果需要配置的 TX 目标射频频率是 433.92 MHz，根据上面的计算步骤，得出： TX frequency FREQ_PALDO_SEL < 500 MHz 0 >= 500 MHz 1 For example, if the target RF frequency for TX to be configured is 433.92 MHz, according to the above www.cmostek.com Rev 0.8 | Page 5/8...
  • Page 6 FREQ_PALDO_SEL is 0..  FREQ_VCO_BANK <2:0>的值是 001  FREQ_DIVX_CODE <2:0>是 001，DIVIDER 的值是 4  FREQ_LO 的值是 433920000  N.K 的值是 66.75692308  FREQ_RX_N <7:0>的值是 66，二进制是 01000010  FREQ_RX_K <19:0>的值是 793691，二进制是  FREQ_PALDO_SEL 是 0 www.cmostek.com Rev 0.8 | Page 6/8...
  • Page 7 AN199 2. 文档变更记录 表 3. 文档变更记录表 版本号 章节 变更描述 日期 所有 初始版本发布 2017-10-31 www.cmostek.com Rev 0.8 | Page 7/8...
  • Page 8 The material contained herein is the exclusive property of CMOSTEK and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of CMOSTEK. CMOSTEK products are not authorized for use as critical components in life support devices or systems without express written approval of CMOSTEK.

This manual is also suitable for:

Cmt2119bCmt2219b

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