PN746X Datasheet, PDF (29/86 Pages) NXP Semiconductors – NFC Cortex-M0 microcontroller

NXP Semiconductors
PN746X_736X
NFC Cortex-M0 microcontroller
Table 13. Communication overview for ISO/IEC 15693 reader/writer label to reader
Communication
direction
Signal type
Transfer speed
6.62 kbit/s
13.24 kbit/s^[1]
26.48 kbit/s
label to reader
(PN7462 receives
data from a card) f_c
= 13.56 MHz
card side
modulation
bit length (s)
not supported
-
not supported
-
single (dual) sub
carrier load
modulation ASK
37.76
bit encoding
-
-
manchester coding
subcarrier
-
-
f_c / 32
frequency (MHz)
52.96 kbit/s
single sub carrier
load modulation ASK
18.88
manchester coding
f_c / 32
[1] Fast inventory (page) read command only (ICODE proprietary command).
SXOVH
PRGXODWHG
FDUULHU
a—V
a—V

           


aPV
          


DDP
Fig 17. Data coding according to ISO/IEC 15693 standard mode reader to label
8.10.1.5 ISO/IEC18000-3 mode 3 functionality
The ISO/IEC 18000-3 mode 3 is not described in this document. For a detailed
explanation of the protocol, refer to the ISO/IEC 18000-3 standard.
PN7462 supports the following features:
• TARI = 9.44 s or 18.88 s
• Downlink: Four subcarrier pulse manchester and two subcarrier pulse manchester
• Subcarrier: 423 kHz (f_c / 32) with DR = 0 and 847 kHz (f_c / 16) with DR = 1
8.10.1.6 NFCIP-1 modes
The NFCIP-1 communication differentiates between an active and a passive
communication mode.
• In active communication mode, both initiator and target use their own RF field to
transmit data
• In passive communication mode, the target answers to an initiator command in a load
modulation scheme. The initiator is active in terms of generating the RF field
• The initiator generates RF field at 13.56 MHz and starts the NFCIP-1 communication
• In passive communication mode, the target responds to initiator command in load
modulation scheme. In active communication mode, it uses a self-generated and
self-modulated RF field.
PN746X_736X
Product data sheet
COMPANY PUBLIC
All information provided in this document is subject to legal disclaimers.
Rev. 3.1 — 5 April 2016
369231
© NXP Semiconductors N.V. 2016. All rights reserved.
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