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PCA9564BS Datasheet PDF : 32 Pages
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Philips Semiconductors
Parallel bus to I2C-bus controller
Product data sheet
PCA9564
Table 3. Master Receiver Mode
STATUS
CODE
(I2CSTA)
STATUS OF THE
I2C BUS AND
SIO HARDWARE
APPLICATION SOFTWARE RESPONSE
TO I2CCON
TO/FROM I2CDAT
STA STO SI AA
08H A START condition has Load SLA+R
been transmitted
X
X
0
X
10H A repeated START
condition has been
transmitted
Load SLA+R or
Load SLA+W
X
X
0
X
X
X
0
X
38H Arbitration lost in
NOT ACK bit
No I2CDAT action or 0
0
0
X
No I2CDAT action
1
0
0
X
40H SLA+R has been
No I2CDAT action or 0
0
0
0
transmitted; ACK has
been received
no I2CDAT action
0
0
0
1
48H SLA+R has been
No I2CDAT action or 1
0
0
X
transmitted; NOT ACK no I2CDAT action or 0
1
0
X
has been received
no I2CDAT action
1
1
0
X
50H Data byte has been
Read data byte or
received; ACK has been
returned
read data byte
58H Data byte has been
Read data byte or
received; NOT ACK has read data byte or
been returned
read data byte
0
0
0
0
0
0
0
1
1
0
0
X
0
1
0
X
1
1
0
X
38H Arbitration lost in
SLA+R
No I2CDAT action or 0
0
0
X
No I2CDAT action
1
0
0
X
NEXT ACTION TAKEN BY SIO HARDWARE
SLA+R will be transmitted;
ACK bit will be received
As above
SLA+W will be transmitted;
SIO will be switched to MST/TRX mode
I2C-bus will be released;
SIO will enter a slave mode
A START condition will be transmitted when the
bus becomes free
Data byte will be received;
NOT ACK bit will be returned
Data byte will be received;
ACK bit will be returned
Repeated START condition 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 received;
NOT ACK bit will be returned
Data byte will be received;
ACK bit will be returned
Repeated START condition 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
I2C-bus will be released;
not addressed slave will be entered
A START condition will be transmitted when the
bus becomes free
2006 Sep 01
12
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