Datasheet

PCA9544A All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet Rev. 5 — 23 April 2014 11 of 31
NXP Semiconductors
PCA9544A
4-channel I
2
C-bus multiplexer with interrupt logic
7.5 Bus transactions
Fig 12. Write control register
Fig 13. Read control register
002aae299
XXXXXB2B1B01 1 0 A2 A1 A0 0 AS 1 A P
slave address
START condition R/W acknowledge
from slave
acknowledge
from slave
control register
SDA
STOP condition
002aae300
INT
3
INT
2
INT
1
INT
0
X B2B1B0
1 1 0 A2 A1 A0 1 AS 1 NA P
slave address
START condition R/W acknowledge
from slave
no acknowledge
from master
control register
SDA
STOP condition
last byte