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STM8SPLNB1 データシート(PDF) 40 Page - STMicroelectronics

部品番号 STM8SPLNB1
部品情報  Internal 16MHz oscillator
PDF  44 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM8SPLNB1 データシート(HTML) 40 Page - STMicroelectronics

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DiSEqC™ protocol basics
STM8SPLNB1
40/44
DocID018831 Rev 5
A.1.3
Data transfer on coaxial cable
The 22 kHz signal is also used for data communication through coaxial cable (bidirectional
transfer). In this case is used amplitude modulation of 22 kHz signal.
Bit “logical 0” coding:
1.0 ms 22 kHz signal
0.5 ms no signal
Bit “logical 0” coding:
0.5 ms 22 kHz signal
1.0 ms no signal
By this modulation is transferred full DiSEqC™ message (8 bits per byte + parity, several
bytes in message - see A.1: Physical layer).
Figure 20. DiSEqC™ bit modulation
Figure 21. Timing diagram for typical DiSEqC™ (1.0 version)



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