Philips Semiconductors Product data sheet
PCA9564Parallel bus to I
2
C-bus controller
2006 Sep 01
11
Table 2. Master Transmitter Mode
APPLICATION SOFTWARE RESPONSE
CODE
I
2
C BUS AND
TO I2CCON
NEXT ACTION TAKEN BY SIO HARDWARE
STA STO SI AA
08H A START condition has
been transmitted
Load SLA+W X X 0 X SLA+W will be transmitted;
ACK bit will be received
10H A repeated START
Load SLA+W or X X 0 X As above
condition has been
transmitted
Load SLA+R X X 0 X SLA+R will be transmitted;
SIO will be switched to MST/REC mode
18H SLA+W has been
transmitted; ACK has
Load data byte or 0 0 0 X Data byte will be transmitted;
ACK bit will be received
been received
no I2CDAT action or 1 0 0 X Repeated START will be transmitted;
no I2CDAT action or 0 1 0 X STOP condition will be transmitted;
STO flag will be reset
no I2CDAT action 1 1 0 X STOP condition followed by a
START condition will be transmitted;
STO flag will be reset
20H SLA+W has been
transmitted; NOT ACK
Load data byte or 0 0 0 X Data byte will be transmitted;
ACK bit will be received
has been received
no I2CDAT action or 1 0 0 X Repeated START will be transmitted;
no I2CDAT action or 0 1 0 X STOP condition will be transmitted;
STO flag will be reset
no I2CDAT action 1 1 0 X STOP condition followed by a
START condition will be transmitted;
STO flag will be reset
28H Data byte in I2CDAT
has been transmitted;
Load data byte or 0 0 0 X Data byte will be transmitted;
ACK bit will be received
ACK has been received
no I2CDAT action or 1 0 0 X Repeated START will be transmitted;
no I2CDAT action or 0 1 0 X STOP condition will be transmitted;
STO flag will be reset
no I2CDAT action 1 1 0 X STOP condition followed by a
START condition will be transmitted;
STO flag will be reset
30H Data byte in I2CDAT
has been transmitted;
Load data byte or 0 0 0 X Data byte will be transmitted;
ACK bit will be received
NOT ACK has been
no I2CDAT action or 1 0 0 X Repeated START will be transmitted;
rece
ve
no I2CDAT action or 0 1 0 X STOP condition will be transmitted;
STO flag will be reset
no I2CDAT action 1 1 0 X STOP condition followed by a
START condition will be transmitted;
STO flag will be reset
38H Arbitration lost in
SLA+W or
No I2CDAT action or 0 0 0 X I
2
C-bus will be released;
not addressed slave will be entered
Data bytes
No I2CDAT action 1 0 0 X A START condition will be transmitted when the
bus becomes free (STOP or SCL and SDA high)