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PN544

Near field communication (NFC) controller

NXP Semiconductors. 

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NXP Semiconductors

PN544

Near field communication (NFC) controller

8. Communication modes

The PN544 supports various communication modes at different transfer speeds and

modulation schemes. The following chapters give more detailed overview of selected

communication modes.

Note: All indicated modulation indices and modes in this chapter are system parameters.

This means that beside the IC settings a suitable antenna tuning is required to achieve the

optimum performance.

8.1 Reader/Writer modes

Generally 4 Reader/Writer modes are supported:

• PCD reader/writer for ISO/IEC 14443A/Mifare

• PCD reader/writer for FeliCa cards

• PCD reader/writer for ISO/IEC 14443B

• VCD reader/writer for ISO/IEC 15693/ICODE.

8.1.1 ISO/IEC 14443-A/Mifare PCD mode

The ISO/IEC 14443-A/Mifare PCD mode is the general reader to card communication

scheme according to the ISO/IEC 14443-A/Mifare specification.The following diagram

describes the communication on a physical level, the communication table describes the

physical parameters.

PN544

ISO/IEC 14443 Type A

PCD mode

PCD to PICC 100 % ASK

Miller Coded

106..848 kbit

PICC to PCD, Subcarrier Loadmodulation

Manchester Coded or BPSK

106..848 kbit

Card (PICC)

ISO/IEC 14443 Type A

Mifare

Fig 4. ISO/IEC 14443A/Mifare Reader/Writer mode communication diagram

134812

Objective short data sheet

Rev. 1.2 — 4 September 2007

© NXP B.V. 2007. All rights reserved.

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