Datasheet

Short form data sheet Rev. 1.2 — 31 March 2011 22 of 25

Philips Semiconductors

PN532/C1

NFC controller

16. Abbreviations

Table 18: Abbreviations

Acronym Description

ASK Amplitude Shift keying

PCD Proximity Coupling Device. Definition for a Card Reader/ Writer according to the

ISO 14443 Specification

PICC Proximity Cards. Definition for a contactless Smart Card according to the

ISO14443 specification

PCD -> PICC Communication flow between a PCD and a PICC according to the ISO14443A/

MIFARE

PICC -> PCD Communication flow between a PICC and a PCD according to the ISO14443A/

MIFARE

Initiator Generates RF field @ 13.56 MHZ and starts the NFCIP-1 communication.

Modulation Index The modulation index is defined as the voltage ratio (Vmax - Vmin) / (Vmax +

Vmin).

Loadmodulation

Index

The load modulation index is defined as the card’s voltage ratio (Vmax - Vmin) /

(Vmax + Vmin) measured at the card’s coil.

Target Responds to initiator command either using load modulation scheme (RF field

generated by Initiator) or using modulation of self generated RF field (no RF

field generated by initiator).