AR0130 Datasheet, PDF (35/53 Pages) ON Semiconductor – CMOS Digital Image Sensor

AR0130: 1/3-Inch CMOS Digital Image Sensor
Two-Wire Serial Register Interface
Sequential READ, Start from Current Location
This sequence (Figure 23) starts in the same way as the single READ from current loca-
tion (Figure 21). Instead of generating a no-acknowledge bit after the first byte of data
has been transferred, the master generates an acknowledge bit and continues to
perform byte READs until “L” bytes have been read.
Figure 23: Sequential READ, Start from Current Location
Previous Reg Address, N
N+1
N+2
N+L-1
N+L
S Slave Address 1 A
Read Data A
Read Data A
Read Data A
Read Data A P
Single WRITE to Random Location
This sequence (Figure 24) begins with the master generating a start condition. The slave
address/data direction byte signals a WRITE and is followed by the HIGH then LOW
bytes of the register address that is to be written. The master follows this with the byte of
write data. The WRITE is terminated by the master generating a stop condition.
Figure 24: Single WRITE to Random Location
Previous Reg Address, N
Reg Address, M M+1
S Slave Address 0 A Reg Address[15:8] A Reg Address[7:0] A
Write Data
AP
A
Sequential WRITE, Start at Random Location
This sequence (Figure 25) starts in the same way as the single WRITE to random location
(Figure 24). Instead of generating a no-acknowledge bit after the first byte of data has
been transferred, the master generates an acknowledge bit and continues to perform
byte WRITEs until “L” bytes have been written. The WRITE is terminated by the master
generating a stop condition.
Figure 25: Sequential WRITE, Start at Random Location
Previous Reg Address, N
Reg Address, M M+1
S Slave Address 0 A Reg Address[15:8] A Reg Address[7:0] A
Write Data A
M+1
M+2
M+3
Write Data A
Write Data A
M+L-2
Write Data A
M+L-1
M+L
Write Data
A
AP
AR0130 DS Rev. L Pub. 6/15 EN
35
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