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 — 2010-06-16 124 of 172
Id Name Access
Rights
Comment Length Default
‘0C’
NXP_NFCI_PARAM
RO
(RAM)
Contains the current parameters of the
NFCIP-1 link when communication has
been set.
- bits 0 to 2: datarate Target to Initiator
- bits 3 to 5: datarate Initiator to Target
0 -> Divisor equal to 1
1 -> Divisor equal to 2
2 -> Divisor equal to 4
Other values -> RFU
- bits 6 to 7: maximum frame length
0 -> 64 bytes
1 -> 128 bytes
2 -> 192 bytes
3 -> 256 bytes
1 0x00
Make sure to manage the maximum frame length received from the target
correctly on host side.
PN544 will not take care of this parameter which could lead to a buffer overflow
on target side!
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