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AN199

Rev0.7 | 8

www.cmostek.com

3 Contacts

CMOSTEK Microelectronics Co., Ltd. Shenzhen Branch

Address: 2/F Building 3, Pingshan Private Enterprise S.T. Park, Xili, Nanshan District, Shenzhen, Guangdong, China

Tel:

+86-755-83231427

Post Code:

518057

Sales:

[email protected]

Supports:

[email protected]

Website:

www.cmostek.com

The information furnished by CMOSTEK is believed to be accurate and reliable. However, no responsibility is assumed 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, 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. The CMOSTEK logo is a registered trademark of

CMOSTEK Microelectronics Co., Ltd. All other names are the property of their respective owners.

Copyright. CMOSTEK Microelectronics Co., Ltd. All rights are reserved.

Содержание CMT2219B

Страница 1: ...ange Modulation Type Main Function Configuration Mode Packaging CMT2300A 126 33 1020 MHz G FSK OOK Transceiver Register QFN16 CMT2119B 126 33 1020 MHz G FSK OOK Transmitter Register QFN16 CMT2219B 126...

Страница 2: ...AN199 Rev0 7 2 8 www cmostek com Table of Contents 1 RF Frequency Calculation 3 1 1 Configuring RF Parameters of RX 3 1 2 Configuring RF Parameters of TX 6 2 Revise History 7 3 Contacts 8...

Страница 3: ...bits of the register 1 1 Configuring RF Parameters of RX To configure the frequency of RX the below items need to be configured FREQ_VCO_BANK 2 0 FREQ_DIVX_CODE 2 0 FREQ_RX_N 7 0 FREQ_RX_K 19 0 AFC_O...

Страница 4: ...ted local oscillator frequency in Hz FREQ_LO FREQ_RF x 10 6 26 MHz 92 Then calculate the value of the frequency word N K N K FREQ_LO x DIVIDER 26 MHz Obtain the integer part of N K and convert it to b...

Страница 5: ...ith an address of 0x27 CUS_FSK4 to make the receiver work normally otherwise the receiver may have error when performing AFC which may cause receiving failure For example if the target RF frequency fo...

Страница 6: ...frequency of RX In the formula below FREQ_RF is the target RF frequency in MHz FREQ_LO is the calculated local oscillator frequency in Hz FREQ_LO FREQ_RF x 10 6 Then calculate the value of the freque...

Страница 7: ...AN199 Rev0 7 7 8 www cmostek com 2 Revise History Table 1 Revise History Records Version No Chapter Description Date 0 7 All Initial version 2018 10 10...

Страница 8: ...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 reproduced...