NXP Semiconductors
UM191812
PN544 C2 User Manual
191812 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved.
User Manual Rev. 1.2 — 2010-06-16 104 of 172
Table 91. MIFARE Registry
Id Name Access
Rights
Comment Length Default
‘10’
NXP_AUTO_ACTIVATION
RW
(EE)
If set to 0, the activation procedure will stop after
Select (SAK has been received). The host could
evaluate SAK value and then decide:
- to start communicating with the remote card
using proprietary commands (see
NXP_MIFARE_RAW and NXP_MIFARE_CMD)
or
- to activate the remote card up to ISO14443-4
level (RATS and PPS) using command
NXP_WRA_CONTINUE_ACTIVATION
If set to 1, activation follows the flow described in
ETSI HCI specification (restrict detection to
ISO14443-4 compliant cards).
1 0x01
Note:
If NXP_AUTO_ACTIVATION is set to 0x00,
NXP_WRA_CONTINUE_ACTIVATION is mandatory to fully activate ISO14443-4 cards.
It means that NXP_WR_ACTIVATE_ID & NXP_WR_ACTIVATE_NEXT must be followed
by NXP_WRA_CONTINUE_ACTIVATION before using NXP_WR_PRESCHECK or
WR_XCHG_DATA with ISO14443-4 cards.
In case NXP_AUTO_ACTIVATION register entry is set to 0, following flows can be
observed:
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