AR0130 Datasheet, PDF (21/53 Pages) ON Semiconductor – CMOS Digital Image Sensor

Hard Standby
Window Control
Blanking Control
AR0130: 1/3-Inch CMOS Digital Image Sensor
Features
Hard Standby puts the sensor in lower power state; previously written register settings
are still maintained.
A specific sequence needs to be followed to enter and exit from Hard Standby.
To Enter Hard Standby:
1. R0x301A[8] = 1
2. R0x301A[12] = 1 if serial mode was used
3. Assert STANDBY pin
4. External clock can be turned off to further minimize power consumption (Optional)
To Exit Hard Standby:
1. Enable external clock if it was turned off
2. De-assert STANDBY pin
3. Set R0x301A[8] = 0
Registers x_addr_start, x_addr_end, y_addr_start, and y_addr_end control the size and
starting coordinates of the image window.
The exact window height and width out of the sensor is determined by the difference
between the Y address start and end registers or the X address start and end registers,
respectively.
The AR0130 allows different window sizes for context A and context B.
Horizontal blank and vertical blank times are controlled by the line_length_pck and
frame_length_lines registers, respectively.
• Horizontal blanking is specified in terms of pixel clocks. It is calculated by subtracting
the X window size from the line_length_pck register. The minimum horizontal
blanking is 110 pixel clocks.
• Vertical blanking is specified in terms of numbers of lines. It is calculated by
subtracting the Y window size from the frame_length_lines register. The minimum
vertical blanking is 26 lines.
The actual imager timing can be calculated using Table 4 on page 15 and Table 5 on
page 16, which describe the Line Timing and FV/LV signals.
AR0130 DS Rev. L Pub. 6/15 EN
21
©Semiconductor Components Industries, LLC, 2015.