Data Sheet
PN512_C1_SDS All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.
Product short data sheet
COMPANY PUBLIC
Rev. 3.2 — 20 September 2012
120132 14 of 27
NXP Semiconductors
PN532/C1
Near Field Communication (NFC) controller
7.1.4.1 ACTIVE Communication mode
Active Communication Mode means both the Initiator and the Target are using their own
RF field to transmit data.
The following table gives an overview of the active communication modes:
Fig 8. Active NFC mode
Table 8. Communication overview for NFC Active Communication mode
Communication scheme ISO/IEC 18092, ECMA 340, NFCIP-1
Baud rate 106 kbit/s 212 kbit/s 424 kbit/s
Bit length
Initiator to Target Modulation 100% ASK 8-30%ASK 8-30%ASK
Bit coding Miller Coded Manchester Coded Manchester Coded
Target to Initiator Modulation 100% ASK 8-30%ASK 8-30%ASK
Bit coding Miller Coded Manchester Coded Manchester Coded
1. Initiator starts the communication
PN532
NFC Initiator
Host
PN532
NFC Target
Host
2. Target answers
PN532
NFC Initiator
Host
PN532
NFC Target
Host
Powered for Digital
Communication
Power to generate
the field
Powered for Digital
Communication
Power to generate
the field
at selected transfer speed
at the same transfer speed
128
13.56MHz
--------------------------
9.44s
64
13.56MHz
--------------------------
4.72s
32
13.56MHz
--------------------------
2.36s