NXP Semiconductors
PN511
Transmission Module
8.2.2 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.
Fig 10. Passive Communication mode
Table 10. Communication Overview for Passive Communication mode
Communication 106 kbit/s
direction
212 kbit/s
424 kbit/s
848 kbit/s
1.69 Mbit/s,
3.39 Mbit/s
Initiator → Target According to
ISO 14443A
100% ASK,
Modified
Miller Coded
According to FeliCa, 8-30% digital capability to handle
ASK Manchester Coded this communication
Target → Initiator According to
According to FeliCa, >12%
ISO 14443A
ASK Manchester Coded
subcarrier load
modulation,
Manchester Coded
The contactless UART of PN511 and a dedicated host controller are required to handle
the NFCIP-1 protocol.
Note: Transfer Speeds above 424 kbit/s are not defined in the NFCIP-1 standard. The
PN511 supports these transfer speeds only with dedicated external circuits.
082733
Product short data sheet
Rev. 3.3 — 13 June 2007
© NXP B.V. 2007. All rights reserved.
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