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NXP Semiconductors PN544 C2 - I2 C 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 11 of 172
6.3 I
2
C interface
The PN544 is an I
2
C slave.
To use this interface, an I
2
C address has to be set. The default address of the device is
set to binary “0 1 0 1 0 IF1 IF0”. The prefix “0 1 0 1 0” is a fixed value inside PN544.
How to configure I
2
C interface:
I2C Interface Configuration
IF0 ADDR0
IF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF1 ADDR1
IF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF2 SDA
IF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF0 NSSIF3 SCL
IFSEL0
IFSEL1
IFSEL2 0
1
0
2
)
Fig 3. I2C interface configuration

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