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CLRC663 Datasheet(PDF) 14 Page - NXP Semiconductors |
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CLRC663 Datasheet(HTML) 14 Page - NXP Semiconductors |
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14 / 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 14 of 132 NXP Semiconductors CLRC663 Contactless reader IC 8.3.3 FeliCa functionality The FeliCa mode is the general reader/writer to card communication scheme according to the FeliCa specification. The communication on a physical level is shown in Figure 9. The physical parameters are described in Table 7. The CLRC663 needs to be connected to a host to be able to support the complete FeliCa protocol. 8.3.3.1 FeliCa framing and coding To enable the FeliCa communication a 6 byte preamble (00h, 00h, 00h, 00h, 00h, 00h) and 2 bytes sync bytes (B2h, 4Dh) are sent to synchronize the receiver. The following Len byte indicates the length of the sent data bytes plus the LEN byte itself. The CRC calculation is done according to the FeliCa definitions with the MSB first. To transmit data on the RF interface, the host controller has to send the Len- and data- bytes to the CLRC663's FIFO-buffer. The preamble and the sync bytes are generated by the CLRC663 automatically and must not be written to the FIFO by the host controller. The CLRC663 performs internally the CRC calculation and adds the result to the data frame. 8.3.4 ISO/IEC15693 functionality The physical parameters are described in Table 9. Fig 9. FeliCa read/write communication diagram Table 7. Communication overview for FeliCa reader/writer Communication direction Signal type Transfer speed FeliCa FeliCa higher transfer speeds 212 kbit/s 424 kbit/s Reader to card (send data from the CLRC663 to a card) fc = 13.56 MHz reader side modulation 8 % to 30 % ASK 8 % to 30 % ASK bit encoding Manchester encoding Manchester encoding bit rate fc/64 fc/32 Card to reader (CLRC663 receives data from a card) card side load modulation 30/H^1.2 (H = field strength [A/m]) 30/H^1.2 (H = field strength [A/m]) bit encoding Manchester encoding Manchester encoding 001aam271 FeliCa READER (PCD) FeliCa CARD (PICC) 1. PCD to PICC 8-30 % ASK Manchester Coded, baudrate 212 to 424 kbaud 2. PICC to PCD, >12 % Loadmodulation Manchester Coded, baudrate 212 to 424 kbaud Table 8. FeliCa framing and coding Preamble (Hex.) Sync (Hex.) Len n-Data CRC 00 00 00 00 00 00 B2 4D |
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