Datasheet

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PN532_C1 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2017. All rights reserved. Product data sheet COMPANY PUBLIC
Rev. 3.6 — 28 November 2017
115436 63 of 222
NXP Semiconductors
PN532/C1
Near Field Communication (NFC) controller
C0h Read data byte in I
2
CDAT has
been transmitted; NOT ACK has
been received
No I
2
CDAT action 0 0 0 0 Switched to not addressed SLV mode; no recognition of own SLA or
General call address
No I
2
CDAT action 0 0 0 1 Switched to not addressed SLV mode; Own SLA will be recognized;
General call address will be recognized if I
2
CADR[0] is set to logic 1.
No I
2
CDAT action 1 0 0 0 Switched to not addressed SLV mode; no recognition of own SLA or
General call address. A START condition will be transmitted when the bus
becomes free
No I
2
CDAT action 1 0 0 1 Switched to not addressed SLV mode; Own SLA will be recognized;
General call address will be recognized if I
2
CADR[0] is set to logic1. A
START condition will be transmitted when the bus becomes free
C8h Last read data byte in I
2
CDAT
has been transmitted (AA is set
to logic 0); ACK has been
received
No I
2
CDAT action 0 0 0 0 Switched to not addressed SLV mode; no recognition of own SLA or
General call address
No I
2
CDAT action 0 0 0 1 Switched to not addressed SLV mode; Own SLA will be recognized;
General call address will be recognized if I
2
CADR[0] is set to logic 1.
No I
2
CDAT action 1 0 0 0 Switched to not addressed SLV mode; no recognition of own SLA or
General call address. A START condition will be transmitted when the bus
becomes free
No I
2
CDAT action 1 0 0 1 Switched to not addressed SLV mode; Own SLA will be recognized;
General call address will be recognized if I
2
CADR[0] is set to logic 1. A
START condition will be transmitted when the bus becomes free
Table 83. I
2
C Slave Transmitter Mode status codes …continued
Status
Code
ST[7:0]
Status of the I
2
C Bus and
the I
2
C interface Hardware
Application firmware Response Next Action Taken By the I
2
C interface Hardware
To /from I
2
CDAT TO I
2
CCON
STA STO SI AA
Table 84. I
2
C Miscellaneous status codes
Status
Code
I
2
CSTA
Status of the I
2
C Bus and
the I
2
C interface Hardware
Application firmware Response Next Action Taken By the I
2
C interface Hardware
To /from I
2
CDAT TO I
2
CCON
STA STO SI AA
00h Bus error No I
2
CDAT action X 1 0 X Hardware will enter the “not addressed” Slave mode
F8h No information available No I
2
CDAT action -- -- -- -- --