STCF06 Datasheet, PDF (21/33 Pages) STMicroelectronics – 1.5 A white LED driver with I²C interface

I²C bus interface
Figure 10. Reading from a single register
DEVICE
ADDRESS
7 bits
W
R
I
T
ADDRESS
OF
REGISTER
E
DEVICE
R
ADDRESS _E
7 bits
A
D
DATA
STCF06
SM
TS
AB
R
T
L RAM
S/ CS
B WK B
L AS
RA
SCT
/C
BKA
WK
R
T
SDA LINE
L NS
S OT
BO
AP
C
K
8.9
Reading from multiple registers with incremental addressing
Reading from multiple registers starts in the same way like reading from a single register. As
soon as the first register is read, the register address is automatically increased. If the
master generates an acknowledge pulse after receiving the data from the first register, then
reading of the next register can start immediately without sending the device address and
the register address again. The last acknowledge pulse before the STOP bit is not required.
See the Figure 11.
Figure 11. Reading from multiple registers
W
DEVICE
R
ADDRESS
I
7 bits
T
E
ADDRESS OF
REGISTER i
DEVICE
R
ADDRESS
E
7 bits
A
D
DATA i
DATA i+1
DATA i+2
DATA i+2
DATA i+n
SM
TS
AB
R
T
L RAM
S / CS
B WK B
LAS
SCT
BKA
R
T
RA
/C
WK
L AM
SCS
BKB
SDA LINE
L AM
S CS
BKB
L AM
S CS
BKB
L AM
S CS
BKB
L NS
S OT
BO
AP
C
K
21/33