CLRC663 Datasheet, PDF (14/132 Pages) NXP Semiconductors – Contactless reader IC

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.
FeliCa READER
(PCD)
1. PCD to PICC 8-30 % ASK
Manchester Coded,
baudrate 212 to 424 kbaud
FeliCa CARD
(PICC)
2. PICC to PCD, >12 % Loadmodulation
Manchester Coded,
baudrate 212 to 424 kbaud
001aam271
Fig 9. FeliCa read/write communication diagram
The physical parameters are described in Table 7.
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
bit encoding
bit rate
8 % to 30 % ASK
8 % to 30 % ASK
Manchester encoding
fc/64
Manchester encoding
fc/32
Card to reader (CLRC663 card side load
receives data from a
modulation
card)
bit encoding
30/H^1.2
30/H^1.2
(H = field strength [A/m]) (H = field strength [A/m])
Manchester encoding Manchester encoding
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
Table 8. FeliCa framing and coding
Preamble (Hex.)
Sync
(Hex.)
00 00 00 00 00 00 B2 4D
Len n-Data
CRC
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.
CLRC663
Product data sheet
COMPANY PUBLIC
All information provided in this document is subject to legal disclaimers.
Rev. 3.3 — 3 April 2012
171133
© NXP B.V. 2012. All rights reserved.
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