c15bc1 aptina, c15bc1 Datasheet - Page 13

• Manufacturer Part Number: c15bc1
• Description: Mt9d014 1/4-inch 2mp Cmos Digital Image Sensor
• Manufacturer: aptina

Single READ from Random Location
Figure 4:
Single READ from Current Location
Figure 5:
Sequential READ, Start from Random Location
Figure 6:
PDF: 0526161444/Source: 6112702771
MT0D014_DS - Rev. J 5/10 EN
Single READ from Random Location
Single READ from Current Location
Sequential READ, Start from Random Location
S
S
S = start condition
P = stop condition
Sr = restart condition
A = acknowledge
A = no-acknowledge
S
Slave Address
Slave Address
Previous Reg Address, N
Slave Address
Read Data
M+1
This sequence (Figure 4) starts with a dummy WRITE to the 16-bit address that is to be
used for the READ. The master terminates the WRITE by generating a restart condition.
The master then sends the 8-bit READ slave address/data direction byte and clocks out
1 byte of register data. The master terminates the READ by generating a no-acknowledge
bit followed by a stop condition. Figure 4 shows how the internal register address main-
tained by the MT9D014 is loaded and incremented as the sequence proceeds.
This sequence (Figure 5) performs a read using the current value of the MT9D014
internal register address. The master terminates the READ by generating a no-acknowl-
edge bit followed by a stop condition. The figure shows two independent read
sequences.
This sequence (Figure 6) starts in the same way as the single READ from random loca-
tion (Figure 4). 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.
0
0
A Reg Address[15:8]
A
1
A Reg Address[15:8] A
A
Previous Reg Address, N
Previous Reg Address, N
Read Data
slave to master
master to slave
Read Data
M+2
A
A
M+3
A
Reg Address[7:0]
Reg Address[7:0]
P
13
S
MT9D014: 1/4-Inch 2Mp CMOS Digital Image Sensor
Slave Address
Reg Address, N+1
Read Data
M+L-2
A
A
Sr
Sr
Slave Address
Slave Address
1
A
A
Reg Address, M
Reg Address, M
Read Data
Read Data
M+L-1
Two-Wire Serial Register Interface
1
Aptina reserves the right to change products or specifications without notice.
1
A
A
Read Data
Read Data
A P
A
M+L
N+2
©2007 Aptina Imaging Corporation. All rights reserved.
P
A
A
M+1
M+1
P
Preliminary