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© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
User manual Rev. 02 — 23 May 2005 78 of 133
Philips Semiconductors
UM10109
P89LPC932A1 User manual
Table 68: Master 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
08H A START
condition has
been transmitted
Load SLA+W x 0 0 x SLA+W will be transmitted;
ACK bit will be received
10H A repeat START
condition has
been transmitted
Load SLA+W or
Load SLA+R
x 0 0 x As above; SLA+W will be
transmitted; I
2
C-bus switches
to Master Receiver Mode
18h SLA+W has been
transmitted; ACK
has been received
Load data byte or000xData byte will be transmitted;
ACK bit will be received
no I2DAT action or100xRepeated START will be
transmitted;
no I2DAT action or010xSTOP condition will be
transmitted;
STO flag will be reset
no I2DAT action 110xSTOP condition followed by a
START condition will be
transmitted; STO flag will be
reset.
20h SLA+W has been
transmitted;
NOT-ACK has
been received
Load data byte or000xData byte will be transmitted;
ACK bit will be received
no I2DAT action or100xRepeated START will be
transmitted;
no I2DAT action or010xSTOP condition will be
transmitted; STO flag will be
reset
no I2DAT action 110xSTOP condition followed by a
START condition will be
transmitted; STO flag will be
reset
28h Data byte in I2DAT
has been
transmitted; ACK
has been received
Load data byte or000xData byte will be transmitted;
ACK bit will be received
no I2DAT action or100xRepeated START will be
transmitted;
no I2DAT action or010xSTOP condition will be
transmitted; STO flag will be
reset
no I2DAT action 110xSTOP condition followed by a
START condition will be
transmitted; STO flag will be
reset