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MB89R119B датащи(PDF) 10 Page - RAMXEED LIMITED |
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MB89R119B датащи(HTML) 10 Page - RAMXEED LIMITED |
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10 / 46 page ![]() MB89R119B 10 DS411-00002-4v0-E 1-2. Data rate and data coding The MB89R119B supports only 1 out of 4 mode for data coding, not 1 out of 256 mode. In 1 out of 4 mode, 2-bit signals are coded in a period of 75.52 s as shown in the following. The resulting data rate is 26.48 kbps(fc/512). Each signal is transmitted beginning with the least bit. 1-3. Data frame Frames shall be delimited by a start of frame (SOF) and an end of frame (EOF) and are implemented using code violation.The MB89R119B shall be ready to receive a frame from a reader/writer within 300 s after the MB89R119B has sent a frame to the reader/writer. The MB89R119B shall be ready to receive a frame from a reader/writer within 1 ms of activation by the powering field. 9.44 μs 9.44 μs 9.44 μs 9.44 μs 9.44 μs 75.52 μs 75.52 μs 75.52 μs 75.52 μs 28.32 μs 47.20 μs 66.08 μs “00B” pulse position “01B” pulse position (1 LSB) “10B” pulse position (0 LSB) “11B” pulse position Coding Method in 1 out of 4 Mode SOF 9.44 μs 9.44 μs 9.44 μs 37.76 μs 37.76 μs 37.76 μs 9.44 μs 9.44 μs EOF Waveforms of SOF and EOF signals of a frame sent from a reader/writer |
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