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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MFRC522 датащи(PDF) 84 Page - NXP Semiconductors |
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MFRC522 датащи(HTML) 84 Page - NXP Semiconductors |
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84 / 96 page  MFRC522_33 © NXP B.V. 2009. All rights reserved. Product data sheet PUBLIC Rev. 3 — 26 October 2009 112133 84 of 96 NXP Semiconductors MFRC522 Contactless reader IC 16.1.3.5 Example: Output test signal RX data stream Figure 32 shows the data stream that is currently being received. The TestSel2Reg register’s TestBusSel[4:0] bits are set to 07h to enable test bus signals on pins D1 to D6; see Section 16.1.2 on page 79. The TestSel1Reg register’s TstBusBitSel[2:0] bits are set 06h (pin D6 = s_data) and AnalogTestReg register is set to FFh (TstBusBit) which outputs the received data stream on pins AUX1 and AUX2. 16.1.3.6 PRBS The pseudo-random binary sequences PRBS9 and PRBS15 are based on ITU-TO150 and are defined with the TestSel2Reg register. Transmission of either data stream is started by the Transmit command. The preamble/sync byte/start bit/parity bit are automatically generated depending on the mode selected. Remark: All relevant registers for transmitting data must be configured in accordance with ITU-TO150 before selecting PRBS transmission. (1) s_data (received data stream) (2 V/div). (2) RF field. Fig 32. Received data stream on pins AUX1 and AUX2 20 µs/div 001aak601 (1) (2) |
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