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 62 of 222
NXP Semiconductors
PN532/C1
Near Field Communication (NFC) controller
A0h A STOP condition or repeated
START condition has been
received while still addressed as
SLV/(REC or TRX)
Read data byte 0 0 0 0 Switched to not addressed SLV mode; no recognition of own SLA or
General call address
Read data byte 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.
Read data byte 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
Read data byte 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 82. I
2
C Slave Receiver 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 83. I
2
C Slave Transmitter Mode status codes
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
A8h Own SLA+R has been received;
ACK has been returned
Load data byte X 0 0 0 Last data byte will be transmitted and ACK bit will be received
Load data byte X 0 0 1 Data byte will be transmitted; ACK will be received
B0h Arbitration lost in SLA+R/W as
Master; Own SLA+R has been
received. ACK has been
returned
Load data byte X 0 0 0 Last data byte will be transmitted and ACK bit will be received
Load data byte X 0 0 1 Data byte will be transmitted; ACK will be received
B8h Read data bye in I
2
CDAT has
been transmitted; ACK has
been received
Load data byte X 0 0 0 Last data byte will be transmitted and ACK bit will be received
Load data byte X 0 0 1 Data byte will be transmitted; ACK will be received