Datasheet

Short form data sheet Rev. 1.2 — 31 March 2011 16 of 25

Philips Semiconductors

PN532/C1

NFC controller

9.1.4.3 NFC FRAMING AND CODING

The NFCIP-1 framing and coding in active and passive communication modes are defined

in the NFCIP-1 standard.

9.1.4.4 NFC Protocol Support

The NFCIP-1 protocol is not completely described in this document. For detailed

explanation of the protocol refer to the NCFCIP-1 standard. However the datalink layer is

according to the following policy:

• Speed shall not be changed while continuum data exchange in a transaction.

• More than one transaction at a time in the same operation field is prohibited.

• Transaction includes initialisation and anticollision methods and data exchange (in

continuous way, meaning no interruption by another transaction).

In order not to disturb current infrastructure based on 13.56 MHZ general rules to start

NFC communication are defined in the following way.

• Per default NFCIP-1 device is in target mode, meaning its RF field is switched off.

• The RF level detector is active

• Only if application requires the NFC device shall switch to initiator mode

• Initiator shall only switch on RF if no external RF field is detected by RF Level detector

during a time of T

IDT

• The initiator performs initialisation according to the selected mode.

9.1.5 Card operation mode

The PN532 can be addressed like a FeliCa™ or ISO 14443A / MIFARE

card. This means

that the PN532 can generate an answer in a load modulation scheme according to the

ISO 14443A / MIFARE

or FeliCa™ interface description.

Remark: The PN532 does not support a complete card protocol. This has to be handled

by a dedicated card SAM or a micro-controller. The SAM is optional.

Table 10: NFC Framing and Coding Overview

Baudrate Framing and Coding

106 kbaud According to the ISO 14443A / MIFARE

scheme

212 kbaud According to the FeliCa™ scheme

424 kbaud or higher According to the FeliCa™ scheme

Fig 9. CARD Operating Mode.

Generate RF field

PN532

HOST

Battery

Answers in Loadmodulation scheme

and SAM

Reader/Writer for

Felica or MIFARE