PN511 データシートの表示（PDF） - NXP Semiconductors.

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PN511

Transmission Module

NXP Semiconductors. 

NXP Semiconductors

PN511

Transmission Module

8.2.1 Active Communication mode

Active Communication mode means both the initiator and the target are using their own

RF field to transmit data.

Initial Command

Host

NFC Initiator

1. Initiator starts communication at

selected transfer speed

powered to

generate RF field

Response

Host

NFC Target

powered for digital

processing

Host

NFC Initiator

2. Target answers at the

same transfer speed

Host

NFC Target

powered for digital

processing

Fig 9. Active Communication mode

powered to

generate RF field

Table 9. Communication Overview for Active Communication mode

Communication 106 kbit/s

direction

212 kbit/s

424 kbit/s

848 kbit/s

1.69 Mbit/s,

3.39 Mbit/s

Initiator → Target According to

Target → Initiator ISO 14443A

100% ASK,

Modified

Miller Coded

According to FeliCa, 8-30% digital capability to handle

ASK Manchester Coded this communication

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

the NFCIP-1 protocol.

Note: Transfer Speeds above 424 kbit/s are not defined in the NFCIP-1 standard. The

PN511 supports these transfer speeds only with dedicated external circuits.

082733

Product short data sheet

Rev. 3.3 — 13 June 2007

© NXP B.V. 2007. All rights reserved.

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