pca9673 NXP Semiconductors, pca9673 Datasheet - Page 13

• Manufacturer Part Number: pca9673
• Description: Remote 16-bit I/o Expander For Fm+ I2c-bus With Interrupt And Reset
• Manufacturer: NXP Semiconductors

Fig 18. Read input port register, scenario 2
SCL
SDA
read from port 0
data into port 0
read from port 1
data into port 1
INT
S
START condition
Transfer of data can be stopped at any moment by a STOP condition. When this occurs, data present at the latest acknowledge phase is valid (output mode).
A6
1
2
A5 A4 A3 A2 A1 A0
3
t
v(D)
4
5
6
acknowledge
from slave
DATA 00
7
t
R/W
h(D)
8
1
9
A
DATA 10
t
d(rst)
DATA 00
P0x
DATA 01
acknowledge
from master
t
h(D)
A
DATA 02
DATA 10
P1x
acknowledge
t
DATA 11
su(D)
from master
A
DATA 03
DATA 03
P0x
acknowledge
t
su(D)
from master
A
DATA 12
DATA12
P1x
no acknowledge
from master
002aac313
1
P