UM10462 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2016. All rights reserved.
User manual Rev. 5.5 — 21 December 2016 313 of 523
NXP Semiconductors
UM10462
Chapter 14: LPC11U3x/2x/1x I2C-bus controller
Table 288. Master Receiver mode
Status
Code
(STAT)
Status of the I
2
C-bus
and hardware
Application software response Next action taken by I
2
C hardware
To/From DAT To CON
STA STO SI AA
0x08 A START condition
has been transmitted.
Load SLA+R X 0 0 X SLA+R will be transmitted; ACK bit will be
received.
0x10 A Repeated START
condition has been
transmitted.
Load SLA+R or X 0 0 X As above.
Load SLA+W X 0 0 X SLA+W will be transmitted; the I
2
C block
will be switched to MST/TRX mode.
0x38 Arbitration lost in NOT
ACK bit.
No DAT action or 0 0 0 X I
2
C-bus will be released; the I
2
C block will
enter slave mode.
No DAT action 1 0 0 X A START condition will be transmitted
when the bus becomes free.
0x40 SLA+R has been
transmitted; ACK has
been received.
No DAT action or 0 0 0 0 Data byte will be received; NOT ACK bit
will be returned.
No DAT action 0 0 0 1 Data byte will be received; ACK bit will be
returned.
0x48 SLA+R has been
transmitted; NOT ACK
has been received.
No DAT action or 1 0 0 X Repeated START condition will be
transmitted.
No DAT action or 0 1 0 X STOP condition will be transmitted; STO
flag will be reset.
No DAT action 1 1 0 X STOP condition followed by a START
condition will be transmitted; STO flag will
be reset.
0x50 Data byte has been
received; ACK has
been returned.
Read data byte or 0 0 0 0 Data byte will be received; NOT ACK bit
will be returned.
Read data byte 0 0 0 1 Data byte will be received; ACK bit will be
returned.
0x58 Data byte has been
received; NOT ACK
has been returned.
Read data byte or 1 0 0 X Repeated START condition will be
transmitted.
Read data byte or 0 1 0 X STOP condition will be transmitted; STO
flag will be reset.
Read data byte 1 1 0 X STOP condition followed by a START
condition will be transmitted; STO flag will
be reset.
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