| 전자부품 데이터시트 검색엔진 |
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AT90PWM2 데이터시트(PDF) 217 Page - ATMEL Corporation |
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AT90PWM2 데이터시트(HTML) 217 Page - ATMEL Corporation |
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217 / 365 page ![]() 217 4317K–AVR–03/2013 AT90PWM2/3/2B/3B Figure 19-5. Manchester Frame error detection Note: Counter Overflow = MBURR[H:L] When a Manchester framing error is detected the FEM bit and RxC bit are set at the same time. This allows the application to execute the reception complete interrupt subroute when this error conditon is detected. When a Manchester framing error is detected, the EUSART receiver immediately enters in a new start bit detection phase. Thus when a Manchester framing error is detected within a frame, the receiver will process the rest of the frame as a new incomming frame and generate other FEM errors. Internal Manchester Clock Start Bit N2 N1 Bit 1 Start Bit Bit 2 back shift Start Bit N2 N1 Bit 1 Start Bit front shift Bit 2 N3 Framing Error Manchester Data Manchester Decoder Counter Internal Manchester Clock Edge Detection Space N1/2 Resynchronize Internal Manchester Clock N2/4 N3 N2/2 Counter Overflow Transition outside the detect window The counter reaches the counter overflow value without reaching a manchester edge |
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