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STFPC320 データシート(PDF) 58 Page - STMicroelectronics |
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STFPC320 データシート(HTML) 58 Page - STMicroelectronics |
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58 / 78 page  Remote control protocols STFPC320 58/78 15.6 Matsushita remote control format The modulated carrier is usually derived from 440 kHz and is 1/12 of the frequency with ½ duty cycle. When data are transmitted repeatedly, the frame cycle is 104.7 ms or 240 period. A frame consists of a syn pulse, a five-bit custom code, six-bit data code, a five-bit inverted custom code and a six-bit inverted data code. The timing definitions of the output code waveform are shown in Figure 37. Figure 37. Matsushita remote control protocol 240T 240T 240T 240T Sym pulse C0 C1 C2 C3 C4 D1 D2 D3 D4 D5 C’0C’1 Custom Custom code 5 bit Sym pulse 8T 2T 2T Data “0” 2T 6T Data “1” code 5 bit Inverted custom code 5 bit C’2C’3C’4 C’0 D’1D’2D’3D’4 D’0 D’5 Inverted data code 6 bit End of transmission 8T 2T End of transmission |
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