PN511 데이터 시트보기 (PDF) - NXP Semiconductors.

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PN511

Transmission Module

NXP Semiconductors. 

NXP Semiconductors

PN511

Transmission Module

Table 5. Communication overview for ISO 14443A/Mifare reader/writer

Communication

ISO 14443A/Mifare

direction

transfer speed 106 kbit/s

Mifare Higher transfer speeds

212 kbit/s

424 kbit/s

PN511 → PICC

(send data from

the PN511 to a

card)

Modulation on

reader side

bit coding

100% ASK

100% ASK

Modified Miller coding Modified Miller

coding

100% ASK

Modified Miller

coding

Bitlength

(128/13.56) μs

(64/13.56) μs (32/13.56) μs

PICC → PN511

(receive data

from a card)

modulation on

card side

subcarrier

frequency

subcarrier load

modulation

13.56 MHz/16

subcarrier load

modulation

13.56 MHz/16

subcarrier load

modulation

13.56 MHz/16

bit coding

Manchester coding BPSK

BPSK

The contactless UART of PN511 and a dedicated external host controller are required to

handle the complete Mifare/ISO 14443A/Mifare protocol.

8.1.1.1 Data Coding and framing according to ISO 14443A/Mifare

The internal CRC co-processor calculates the CRC value according to the definitions

given in the ISO 14443A part 3 and handles parity generation internally according to the

transfer speed.

Current ISO14443 Framing for Type A for 106 kBaud

Start

8 bit data

odd

Par.

8 bit data

odd

Par.

8 bit data

odd

Par.

Start Bit is "1"

MIFARE Higher Baudrate Framing for 212, 424 kBaud

Start

8 bit data

odd

Par.

8 bit data

odd

Par.

Burst of 32

sub-carrier

clocks

Start Bit is "0"

even

8 bit data

Par.

Even parity at the

end of the frame!

Fig 6. Data Coding and framing according to ISO 14443A

082733

Product short data sheet

Rev. 3.3 — 13 June 2007

© NXP B.V. 2007. All rights reserved.

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