082733

© NXP B.V. 2007. All rights reserved.

Product short data sheet

Rev. 3.3 — 13 June 2007

10 of 22

NXP Semiconductors

PN511

Transmission Module

8.

Operating modes

PN511 transceiver IC supports the following operating modes:

The modes support different transfer speeds and modulation schemes. The following

chapters will explain the different modes in detail.

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 mode

Generally 2 Reader/Writer modes are supported. The PN511 can act as a reader/writer for

ISO 14443A/Mifare or FeliCa cards.

In the Reader/Writer mode the PN511 enables the communication to a contactless

ISO 14443A/Mifare or FeliCa card.

8.1.1 ISO 14443A/Mifare reader/writer functionality

The ISO 14443A/Mifare Reader/Writer mode is the general reader to card communication

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

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

physical parameters.

Fig 4.

Reader/Writer mode

ISO14443A or

FeliCa Card

PN511

Battery

µC

Reader / Writer

Contactless Card

Fig 5.

ISO 14443A/Mifare Reader/Writer mode communication diagram

ISO14443A

Reader (PCD)

ISO14443A

Card (PICC)

1. PCD to PICC 100 % ASK ,

Miller Coded,

baudrate 106 to 424 kbaud

2. PICC to PCD, Subcarrier Loadmodulation,

Manchester Coded or BPSK,

baudrate 106 to 424 kbaud

PN511