Datasheet

9397 750 XXXXX © Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Short form data sheet Rev. 1.2 — 31 March 2011 14 of 25
Philips Semiconductors
PN532/C1
NFC controller
9.1.4.1 ACTIVE Communication mode
Active Communication Mode means both the initiator and the target are using their own
RF field to enable the communication.
The following table gives an overview of the active communication modes:
Note: Transfer speed above 424 kbit/s are not defined in the NFCIP-1. The PN532
supports these transfer speeds only with dedicated external circuitry.
Fig 7. Active NFC Mode.
1. Initiator starts the communication
PN532
NFC Initiator
Host
PN532
NFC Target
Host
2. Target answer
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
Table 8: Communication Overview for active NFC
Communication
direction
106 kbit/s 212 kbit/s 424 kbit/s 848 kbit/s 1.69 Mbit/s
3.39 Mbit/s
Initiator -> Target According to
ISO14443A
100% ASK,
Miller Coded
According to
FeliCa™,
8-30 %ASK
Manchester Coded
According to
FeliCa™,
8-30 %ASK
Manchester Coded
digital capability to handle this
communication according to the NFC
mode
Target -> Initiator According to
ISO14443A
100% ASK,
Miller Coded
According to
FeliCa™,
8-30 %ASK
Manchester Coded
According to
FeliCa™,
8-30 %ASK
Manchester Coded
digital capability to handle this
communication according to the NFC
mode