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CLRC663 Datasheet(PDF) 17 Page - NXP Semiconductors

Part No. CLRC663
Description  Contactless reader IC
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Maker  NXP [NXP Semiconductors]
Homepage  http://www.nxp.com
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CLRC663 Datasheet(HTML) 17 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
17 of 132
NXP Semiconductors
CLRC663
Contactless reader IC
8.3.7.1
Passive communication mode
Passive communication mode means that the target answers to an initiator command in a
load modulation scheme. The initiator is active meaning generating the RF field.
The contactless UART of CLRC663 and a dedicated host controller are required to handle
the ISO/IEC 18092 passive initiator protocol.
Fig 11. Passive communication mode
Table 12.
Communication overview for Passive communication mode
Communication
direction
106 kbit/s
212 kbit/s
424 kbit/s
Initiator
 target
According to
ISO/IEC 14443A
100 % ASK, Modified
Miller Coded
According to FeliCa, 8 % to 30 % ASK
Manchester Coded
Target
 initiator
According to
ISO/IEC 14443A subcarrier
load modulation,
Manchester Coded
According to FeliCa, > 12 % ASK
Manchester Coded
host
NFC INITIATOR
powered to
generate RF field
1. initiator starts communication
at selected transfer speed
2. targets answers using
load modulated data
at the same transfer speed
host
NFC TARGET
powered for
digital processing
001aan217


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