Datasheet

9397 750 XXXXX © Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Short form data sheet Rev. 1.2 — 31 March 2011 11 of 25
Philips Semiconductors
PN532/C1
NFC controller
9.1.3.1 Reader / Writer mode
Generally 3 reader/writer-operating modes are supported. The PN532 can act as a reader
/ writer for ISO14443A / MIFARE
®
, FeliCa™ and ISO14443B cards.
9.1.3.2 ISO14443A Reader / Writer Functionality
The ISO14443A / MIFARE
®
reader / writer mode is the general reader / writer to card
communication scheme according to the ISO14443A / MIFARE
®
specification. The
following diagram describes the communication on a physical level.
The contactless UART, in cooperation with the internal micro-controller of PN532 and the
external host handle the complete MIFARE
®
/ ISO14443 A protocol.
The internal CRC coprocessor calculates the CRC value according to the definitions given
in the ISO 14443A part 3.
Fig 3. Reader/Writer Mode.
Reader/Writer
PN532
HOST
Battery
ISO 14443A/B or
Felica Card
Contactless Card
Fig 4. ISO14443A / MIFARE
®
reader/writer communication diagram.
PN532
ISO 14443A
Card (PICC)
1. PCD to PICC 100 % ASK,
Miller Coded,
Transfer speed 106 to 424 kbit/s
ISO14443A
Reader (PCD)
2. PICC to PCD, Subcarrier Load modulation,
Manchester Coded or BPSK,
Transfer speed 106 to 424 kbit/s
Table 4: Communication overview for ISO14443A / MIFARE
®
reader/writer
Communication
direction
MIFARE
®
/ ISO14443A MIFARE
®
Higher transfer speed
Baudrate 106kbaud 212 Kbaud 424kBaud
PN532 → card Modulation on reader
side
100 % ASK 100 % ASK 100 % ASK
bit coding Modified Miller coding Modified
Miller
coding
Modified Miller coding
Bitlength
128
⁄
13.56
= 9.44 μs
64
⁄
13.56
=
9.44μs
⁄
2
32
⁄
13.56
=
9.44μs
⁄
4
Card → PN532 Modulation on card side Subcarrier load modulation subcarrier load
modulation
subcarrier load
modulation
Subcarrier frequency
13.56MHz
⁄
16
13.56MHz
⁄
16
13.56MHz
⁄
16
bit coding Manchester coding BPSK BPSK