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 58 of 222
NXP Semiconductors
PN532/C1
Near Field Communication (NFC) controller
Table 80. I
2
C Master Transmitter Mode status code
Status
Code
ST[7:0]
Status of the I
2
CBus
and of 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
08h A START condition has been
transmitted
Load SLA+W X 0 0 X SLA+W will be transmitted ACK will be received
10h A repeated START condition
has been transmitted
Load SLA+W X 0 0 X As above
Load SLA+R X 0 0 X SLA+W will be transmitted;
the I
2
C interface will be switched to MST/(TRX or REC) mode
18h SLA+W has been transmitted;
ACK has been received
Load data byte 0 0 0 X Data byte will be transmitted; ACK bit will be received
No I
2
CDAT action 1 0 0 X Repeated START will be transmitted
No I
2
CDAT action 0 1 0 X STOP condition will be transmitted
STO flag will be set to logic 0
No I
2
CDAT action 1 1 0 X STOP condition followed by a START condition will be transmitted
STO flag will be set to logic 0
20h SLA+W has been transmitted;
NOT ACK has been received
Load data byte 0 0 0 X Data byte will be transmitted
ACK bit will be received
No I
2
CDAT action 1 0 0 X Repeated START will be transmitted
No I
2
CDAT action 0 1 0 X STOP condition will be transmitted
STO flag will be set to logic 0
No I
2
CDAT action 1 1 0 X STOP condition followed by a START condition will be transmitted
STO flag will be set to logic 0
28h Write data byte in I
2
CDAT has
been transmitted;
ACK has been received
Load data byte 0 0 0 X Data byte will be transmitted; ACK bit will be received
No I
2
CDAT action 1 0 0 X Repeated START will be transmitted
No I
2
CDAT action 0 1 0 X STOP condition will be transmitted
STO flag will be set to logic 0
No I
2
CDAT action 1 1 0 X STOP condition followed by a START condition will be transmitted
STO flag will be set to logic 0