Datasheet

9397 750 XXXXX © Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Short form data sheet Rev. 1.2 — 31 March 2011 15 of 25
Philips Semiconductors
PN532/C1
NFC controller
9.1.4.2 PASSIVE Communication mode
Passive Communication Mode means that the target answers to an initiator command in a
load modulation scheme. The initiator is active meaning generating the RF field.
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 8. Passive NFC Mode.
1. Initiator starts communication
PN532
NFC Initiator
Host
PN532
NFC Target
Host
2. Targets answer using load modulated data
PN532
NFC Initiator
Host
PN532
NFC Target
Host
at selected transfer speed
at the same transfer speed
Power to generate
the field
Power for digital
processing
Power to generate
the field
Power for digital
processing
Table 9: Communication Overview for passive 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
ISO14443 A
subcarrier load
modulation,
Manchester Coded
according to
FeliCa™,
>12 % ASK,
Manchester Coded
according to
FeliCa™,
>12 % ASK,
Manchester Coded
digital capability to handle this
communication according to the NFC
mode