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CLRC663 Datasheet(PDF) 13 Page - NXP Semiconductors

Part No. CLRC663
Description  Contactless reader IC
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

CLRC663 Datasheet(HTML) 13 Page - NXP Semiconductors

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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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