Datasheet

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PCA9698 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved. Product data sheet Rev. 3 — 3 August 2010 26 of 48 NXP Semiconductors
PCA9698
40-bit Fm+ I
2
C-bus advanced I/O port with RESET, OE and INT
OE is LOW (with OEPOL = 0) or HIGH (with OEPOL = 1) to observe a change in the outputs.
If more than 5 bytes are written, previous data are overwritten.
Fig 15. Write to the 5 output ports
002aab94
4
S
1 0 0 0 1 0 0 0
A6 A5 A4 A3 A2 A1 A0 0 A
slave address
R/W
START condition
command register
AI = 1
Output Port
register bank 0
is selected
A
acknowledge
from slave
DATA BANK 0
A
acknowledge
from slave
DATA BANK 1
acknowledge
from slave
A
acknowledge
from slave
DATA BANK 2
A
acknowledge
from slave
DATA BANK 3
A
acknowledge
from slave
DATA BANK 4
P
STOP
condition
A
acknowledge
from slave
SDA
t
v(Q)
write to port when OCH = 0
data out from port when OCH = 0
write to port when OCH = 1
data out from port when OCH = 1
data valid
all banks
data valid
bank 0
data valid
bank 1
data valid
bank 2
data valid
bank 3
data valid
bank 4
t
v(Q)