Nxp semiconductors – NXP Semiconductors P89LPC9321 UM10310 User Manual
Page 83
UM10310
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User manual
Rev. 2 — 1 November 2010
83 of 139
NXP Semiconductors
UM10310
P89LPC9321 User manual
A0H
A STOP condition
or repeated
START condition
has been received
while still
addressed as
SLA/REC or
SLA/TRX
No I2DAT action
0
0
0
0
Switched to not addressed SLA
mode; no recognition of own SLA or
General call address
no I2DAT action
0
0
0
1
Switched to not addressed SLA
mode; Own slave address will be
recognized; General call address
will be recognized if I2ADR.0 = 1.
no I2DAT action
1
0
0
0
Switched to not addressed SLA
mode; no recognition of own SLA or
General call address. A START
condition will be transmitted when
the bus becomes free.
no I2DAT action
1
0
0
1
Switched to not addressed SLA
mode; Own slave address will be
recognized; General call address
will be recognized if I2ADR.0 = 1. A
START condition will be transmitted
when the bus becomes free.
Table 75.
Slave Receiver mode
…continued
Status code
(I2STAT)
Status of the I
2
C
hardware
Application software response
Next action taken by I
2
C
hardware
to/from I2DAT
to I2CON
STA
STO
SI
AA
Table 76.
Slave Transmitter mode
Status code
(I2STAT)
Status of the I
2
C
hardware
Application software response
Next action taken by I
2
C
hardware
to/from I2DAT
to I2CON
STA
STO
SI
AA
A8h
Own SLA+R has
been received;
ACK has been
returned
Load data byte or
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 or
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
bit will be received
B8H
Data byte in
I2DAT has been
transmitted; ACK
has been received
Load data byte or
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