PCA9564PW-T Datasheet, PDF (11/32 Pages) NXP Semiconductors – Parallel bus to I2C-bus controller

Philips Semiconductors
Parallel bus to I²C-bus controller
Product data sheet
PCA9564
Table 2. Master Transmitter Mode
STATUS
CODE
(I2CSTA)
STATUS OF THE
I²C BUS AND
SIO HARDWARE
APPLICATION SOFTWARE RESPONSE
TO/FROM I2CDAT
TO I2CCON
STA STO SI AA
NEXT ACTION TAKEN BY SIO HARDWARE
08H A START condition has Load SLA+W
been transmitted
X
X
0 X SLA+W will be transmitted;
ACK bit will be received
10H A repeated START
condition has been
transmitted
Load SLA+W or
Load SLA+R
X
X
0 X As above
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
been received
Load data byte or
0
no I2CDAT action or 1
no I2CDAT action or 0
no I2CDAT action
1
0 0 X Data byte will be transmitted;
ACK bit will be received
0 0 X Repeated START will be transmitted;
1 0 X STOP condition will be transmitted;
STO flag will be reset
1 0 X STOP condition followed by a
START condition will be transmitted;
STO flag will be reset
20H SLA+W has been
Load data byte or
0
transmitted; NOT ACK
has been received
no I2CDAT action or 1
no I2CDAT action or 0
no I2CDAT action
1
0 0 X Data byte will be transmitted;
ACK bit will be received
0 0 X Repeated START will be transmitted;
1 0 X STOP condition will be transmitted;
STO flag will be reset
1 0 X STOP condition followed by a
START condition will be transmitted;
STO flag will be reset
28H Data byte in I2CDAT
Load data byte or
0
has been transmitted;
ACK has been received _{no I2CDAT action or 1}
no I2CDAT action or 0
no I2CDAT action
1
0 0 X Data byte will be transmitted;
ACK bit will be received
0 0 X Repeated START will be transmitted;
1 0 X STOP condition will be transmitted;
STO flag will be reset
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;
NOT ACK has been
received
Load data byte or
0
no I2CDAT action or 1
no I2CDAT action or 0
no I2CDAT action
1
0 0 X Data byte will be transmitted;
ACK bit will be received
0 0 X Repeated START will be transmitted;
1 0 X STOP condition will be transmitted;
STO flag will be reset
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
Data bytes
No I2CDAT action or 0
0
0 X I²C-bus will be released;
not addressed slave will be entered
No I2CDAT action
1
0 0 X A START condition will be transmitted when the
bus becomes free (STOP or SCL and SDA high)
2006 Sep 01
11