Datasheet

PCA9546A All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet Rev. 6 — 30 April 2014 10 of 30
NXP Semiconductors
PCA9546A
4-channel I
2
C-bus switch with reset
7.5 Bus transactions
Data is transmitted to the PCA9546A control register using the Write mode as shown in
Figure 12
.
Data is read from PCA9546A using the Read mode as shown in Figure 13.
Fig 12. Write control register
Fig 13. Read control register
002aab196
XXXXB3B2B1B01 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
002aab197
XXXXB3B2B1B01 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