AN199
Rev0.7 | 7
/8
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2 Revise History
Table 1. Revise History Records
Version No.
Chapter
Description
Date
0.7
All
Initial version
2018-10-10
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
