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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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CLRC663 데이터시트(PDF) 13 Page - NXP Semiconductors |
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CLRC663 데이터시트(HTML) 13 Page - NXP Semiconductors |
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13 / 132 page  CLRC663 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved. Product data sheet COMPANY PUBLIC Rev. 3.3 — 3 April 2012 171133 13 of 132 NXP Semiconductors CLRC663 Contactless reader IC 8.3.2 ISO/IEC14443B functionality The physical level of the communication is shown in Figure 7. The physical parameters are described in Table 6. The CLRC663 connected to a host is required to manage the complete ISO/IEC 14443 B protocol. The following Figure 8 “SOF and EOF according to ISO/IEC 14443 B” shows the ISO/IEC 14443B SOF and EOF. (1) Reader to Card NRZ, Miller coded, transfer speed 106 kbit/s to 848 kbit/s (2) Card to reader, Subcarrier Load Modulation Manchester Coded or BPSK, transfer speed 106 kbit/s to 848 kbit/s Fig 7. ISO/IEC 14443 A/MIFARE read/write mode communication diagram (1) (2) 001aal997 ISO/IEC 14443 B CARD ISO/IEC 14443 B READER Table 6. Communication overview for ISO/IEC 14443 B reader/writer Communication direction Signal type Transfer speed 106 kbit/s 212 kbit/s 424 kbit/s 848 kbit/s Reader to card (send data from the CLRC663 to a card) fc = 13.56 MHz reader side modulation 10 % ASK 10 % ASK 10 % ASK 10 % ASK bit encoding NRZ NRZ NRZ NRZ bit rate [kbit/s] 128 / fc 64 / fc 32 / fc 16 / fc Card to reader (CLRC663 receives data from a card) card side modulation subcarrier load modulation subcarrier load modulation subcarrier load modulation subcarrier load modulation subcarrier frequency fc /16 fc/ 16 fc /16 fc / 16 bit encoding BPSK BPSK BPSK BPSK Fig 8. SOF and EOF according to ISO/IEC 14443 B 001aam270 UNMODULATED (SUB) CARRIER Start of Frame (SOF) sequence 9.44 μs ''0'' ''0'' ''0'' ''0'' ''0'' ''0'' ''0'' ''0'' ''0'' ''0'' ''1'' ''1'' DATA LAST CHARACTER UNMODULATED (SUB) CARRIER End of Frame (EOF) sequence 9.44 μs ''0'' ''0'' ''0'' ''0'' ''0'' ''0'' ''0'' ''0'' ''0'' ''0'' |
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