CMOSTEK CMT2250A, Руководство по настройке

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AN118
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Table of Contents
Introduction ....................................................................................................................................................................... 1
1. Getting Started ............................................................................................................................................................. 4
2. RF Settings ................................................................................................................................................................... 6
2.1 Frequency ............................................................................................................................................................. 6
2.2 Demodulation ........................................................................................................................................................ 6
2.3 Symbol Rate .......................................................................................................................................................... 6
2.4 Xtal Tolerance ....................................................................................................................................................... 6
2.5 Xtal Stabilizing Time .............................................................................................................................................. 7
3. Operation Settings ...................................................................................................................................................... 8
3.1 Duty-Cycle Mode ................................................................................................................................................... 8
3.1.1 Always Receive Mode ................................................................................................................................ 9
3.1.2 Duty-Cycle Receive Mode ......................................................................................................................... 9
3.2 Sleep Time, Rx Time ............................................................................................................................................. 9
3.2.1 Easy Configuration ................................................................................................................................... 10
3.2.2 Precise Configuration ............................................................................................................................... 10
3.3 Wake-On Radio ................................................................................................................................................... 11
3.3.1 Application Example 1: Fixed Duty .......................................................................................................... 12
3.3.2 Application Example 2: Wake on Preamble ............................................................................................. 12
3.4 Rx Early Exit ........................................................................................................................................................ 14
3.4.1 Application Example 1: Fixed Duty with Rx Early Exit .............................................................................. 14
3.4.2 Application Example 2: Wake on Preamble with Rx Early Exit ................................................................ 15
4. OOK Settings ............................................................................................................................................................. 16
4.1 Demod Method .................................................................................................................................................... 16
4.1.1 Fixed Threshold Method .......................................................................................................................... 16
4.1.2 Peak Threshold Method ........................................................................................................................... 17
4.2 Fixed Demod TH ................................................................................................................................................. 17
4.3 Peak Drop Step, Peak Drop Rate ....................................................................................................................... 17
5. Decode Settings ........................................................................................................................................................ 19
5.1 Decoder .............................................................................................................................................................. 19
5.1.1 1920 Normal Packet Structure ................................................................................................................. 20
5.1.2 1920 Study Packet Structure ................................................................................................................... 21
5.1.3 1920 Bit Format ....................................................................................................................................... 21
5.1.4 1527 Normal Packet Structure ................................................................................................................. 22
5.1.5 1527 Study Packet Structure ................................................................................................................... 23
5.1.6 1527 Bit Format ....................................................................................................................................... 23
5.1.7 2262 Packet Structure ............................................................................................................................. 24
5.1.8 2262 Bit Format ....................................................................................................................................... 25
5.2 Pulse Mode, Pulse Time ..................................................................................................................................... 25
5.3 Bit Format ............................................................................................................................................................ 26
5.4 Valid Reception ................................................................................................................................................... 26
5.5 Data Pin Reset Code .......................................................................................................................................... 27
6. Study Settings ........................................................................................................................................................... 28
6.1 ID Study .............................................................................................................................................................. 28