NXP Semiconductors PCA9665 - Manual (Page 35)

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PCA9665_2
© NXP B
.V
. 2006. All r
ights reser
v ed.
Pr
oduct data sheet
Re
v
. 02 — 7 December 2006
35 of 91
NXP Semiconductor
s
PCA9665
Fm+ parallel b
us to I
2 C-b
us contr
oller
28h BC[6:0] bytes in
I2CDAT have been
transmitted; ACK
has been received
for all of them Load the data
bytes or X Total number of data
bytes to be
transmitted 0 0 0 X 1 Up to BC[6:0] data bytes will be transmitted (until
all of them have been sent and an ACK has
been received for each of them or until a NACK
bit is received).
no I2CDAT action
or X X 1 0 0 X 1 Repeated START will be transmitted.
no I2CDAT action
or X X 0 1 0 X 1 STOP condition will be transmitted.
STO flag will be reset.
no I2CDAT action X X 1 1 0 X 1 TOP condition followed by a START condition
will be transmitted.
STO flag will be reset.
30h Up to BC[6:0] bytes
in I2CDAT have
been transmitted;
NACK has been
received for the last
byte
Load the data
bytes or X Total number of data
bytes to be
transmitted 0 0 0 X 1 Up to BC[6:0] data bytes will be transmitted (until
all of them have been sent and an ACK has
been received for each of them or until a NACK
bit is received).
no I2CDAT action
or X X 1 0 0 X 1 Repeated START will be transmitted.
no I2CDAT action
or X X 0 1 0 X 1 STOP condition will be transmitted.
STO flag will be reset.
no I2CDAT action X X 1 1 0 X 1 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 X X 0 0 0 0 1 I 2 C-bus will be released; PCA9665 will enter the
not addressed slave mode.
No I2CDAT
action or X X 0 0 0 1 1 I 2 C-bus will be released; PCA9665 will enter the
slave mode.
No I2CDAT
action X X 1 0 0 X 1 A START condition will be transmitted when the
bus becomes free.
Table 35. Master Transmitter Buffered mode (MODE = 1) …continued
Status
code
(I2CSTA) Status of the
I
2 C-bus and the
PCA9665
Application software response Next action taken by the PCA9665
To/from I2CDAT To I2CCOUNT To I2CCON
LB BC[6:0] STA STO SI AA MODE