NXP Semiconductors PCA9665 - Manual (Page 43)

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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
43 of 91
NXP Semiconductor
s
PCA9665
Fm+ parallel b
us to I
2 C-b
us contr
oller
80h Previously addressed
with own slave
address;
BC[6:0] data bytes
have been received;
ACK has been
returned for all the
bytes
Read data bytes
or 0 Total number of
bytes to be
received X X 0 X 1 Up to BC[6:0] data bytes will be received, ACK bit
will be returned for all of them.
Read data bytes 1 Total number of
bytes to be
received X X 0 X 1 Up to BC[6:0] data bytes will be received, ACK bit
will be returned for all of them, except for the last
one where NACK bit will be returned (unless
master transmitter sends a STOP or Repeated
START condition before).
88h Previously addressed
with own slave
address;
BC[6:0] data bytes
have been received;
ACK has been
returned for all the
bytes, except for the
last one where NACK
bit has been returned
Read data bytes
or X X 0 X 0 0 1 Switched to not addressed slave mode;
No recognition of own slave address; General
Call address will be recognized if GC = 1.
Read data bytes
or X X 0 X 0 1 1 Switched to not addressed slave mode;
Own slave address will be recognized;
General Call address will be recognized if GC = 1.
Read data bytes
or X X 1 X 0 0 1 Switched to not addressed slave mode;
No recognition of own slave address; General
Call address will be recognized if GC = 1;
A START condition will be transmitted when the
bus becomes free.
Read data bytes X X 1 X 0 1 1 Switched to not addressed slave mode;
Own slave address will be recognized;
General Call address will be recognized if GC = 1;
A START condition will be transmitted when the
bus becomes free.
E0h Previously addressed
with General Call;
BC[6:0] data bytes
have been received;
ACK has been
returned for all the
bytes Read data bytes
or 0 Total number of
bytes to be
received X X 0 X 1 BC[6:0] data bytes will be received, ACK bit will
be returned for all of them.
Read data bytes 1 Total number of
bytes to be
received X X 0 X 1 BC[6:0] data bytes will be received, ACK bit will
be returned for all of them, except for the last one
where NACK bit will be returned (unless master
transmitter sends a STOP or Repeated START
condition before).
Table 40. Slave Receiver 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/from I2CCOUNT To I2CCON
LB BC[6:0] STA STO SI AA MODE