Reader/Writer Modes - NXP Semiconductors PN7462 series User Manual

NXP Semiconductors
A minimum voltage of 2.3 V enables card emulation, and P2P passive target functionality
- in passive load modulation. A voltage above 2.7 V enables the complete contactless
functionality.

12.2 Reader/Writer modes

12.2.1 ISO/ IEC14443 type A and Jewel/Topaz PCD modes
The ISO/IEC 14443 type A PCD mode is the general reader to card communication
scheme according to the ISO/IEC 14443A specification. This modulation scheme is as
well used for communications with Jewel/Topaz cards.
The physical level of the communication is shown in
The physical parameters are described in
Table 175. Communication overview for ISO/IEC 14443 A
Communication
direction
Reader to card
f = 13.56 MHz
c
Card to reader
UM10858
User manual
COMPANY PUBLIC
(1) Reader to Card 100 % ASK, Modified 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 25. Communication diagram for ISO/IEC 14443 A
Signal type Transfer speed
106 kbit/s
Reader side 100 % ASK
modulation
Bit encoding Modified Miller
encoding
Bit rate [kbit/s] f /128
c
Card side Subcarrier load
modulation modulation
Subcarrier f /16
c
frequency
Bit encoding Manchester
encoding
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Rev. 1.4 — 14 May 2018
Fig 25.
Table 175
212 kbit/s
100 % ASK
Modified Miller
encoding
f /64
c
Subcarrier load
modulation
f /16
c
BPSK
314514
UM10858
PN7462 family HW user manual
424 kbit/s 848 kbit/s
100 % ASK 100 % ASK
Modified Miller Modified Miller
encoding encoding
f /32 f /16
c c
Subcarrier load Subcarrier load
modulation modulation
f /16 f /16
c c
BPSK BPSK
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