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NXP Semiconductors PN544 C2 - SPI interface

NXP Semiconductors PN544 C2
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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 10 of 172
6.2 SPI interface
The PN544 is a slave SPI.., The mode used for the clock can be chosen for the phase
(CPHA) and the polarity (CPOL). The pin IFSEL0 is used to set CPHA and IFSEL1 is
used to set CPOL.
(See Table 3 for CPH
A & CPOL settings).
How to configure SPI interface:
SPI Interface Configuration
IF0 NSS
IF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF1 MOSI
IF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF2 SCK
IF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF3 MISO
IFSEL0
IFSEL1
IFSEL2 1
CPOL
CPHA
Fig 2. SPI interface configuration

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