2000 Jul 26
91
Philips Semiconductors
Preliminary Specification
Single-chip 8-bit microcontroller with CAN controller
P8xC591
Table 61
Master Transmitter Mode
STATUS
CODE
(S1STA)
STATUS OF THE
I
2
C BUS AND
SIO1 HARDWARE
APPLICATION SOFTWARE RESPONSE
NEXT ACTION TAKEN BY SIO1
HARDWARE
TO/FROM S1DAT
TO S1CON
STA
STO
SI
AA
08H
A START condition has
been transmitted
A repeated START
condition has been
transmitted
Load SLA+W
X
0
0
X
SLA+W will be transmitted;
ACK bit will received
As above
SLA+W will be transmitted; SIO1 will be
switched to MST/REC mode
Data byte will be transmitted; ACK bit will
be received been received
Repeated START will be transmitted;
STOP condition will be transmitted;
STO flag will be reset
STOP condition followed by a START
condition will be transmitted; STO flag will
be reset
Data byte will be transmitted; ACK will be
received
Repeated START will be transmitted;
STOP condition will be transmitted; STO
flag will be reset
STOP condition followed by a START
condition will be transmitted; STO flag will
be reset
Data byte will be transmitted; ACK bit will
be received
Repeated START will be transmitted;
STOP condition will be transmitted; STO
flag will be reset
STOP condition followed by a START
condition will be transmitted; STO flag will
be reset
Data byte will be transmitted; ACK bit will
be received
Repeated START will be transmitted;
STOP condition will be transmitted; STO
flag will be reset
STOP condition followed by a START
condition will be transmitted; STO flag will
be reset
I
2
C bus will be released; not addressed
slave will be entered
A START condition will be transmitted
when the bus becomes free
10H
Load SLA+W or
Load SLA+R
X
X
0
0
0
0
X
X
18H
SLA+W has been
transmitted; ACK has
been received
Load data byte or
0
0
0
X
no S1DAT action or
no S1DAT action or
1
0
0
1
0
0
X
X
no S1DAT action
1
1
0
X
20H
SLA+W has been
transmitted; NOTACK
has been received
Load data byte or
0
0
0
X
no S1DAT action or
no S1DAT action or
1
0
0
1
0
0
X
X
no S1DAT action
1
1
0
X
28H
Data byte in S1DAT has
been transmitted; ACK
has been received
Load data byte or
0
0
0
X
no S1DAT action or
no S1DAT action or
1
0
0
1
0
0
X
X
no S1DAT action
1
1
0
X
30H
Data byte in S1DAT has
been transmitted; NOT
ACK has been received
Load data byte or
0
0
0
X
no S1DAT action or
no S1DAT action or
1
0
0
1
0
0
X
X
no S1DAT action
1
1
0
X
38H
Arbitration lost in
SLA+R/W or Data bytes
No S1DAT action or
0
0
0
X
No S1DAT action
1
0
0
X