Datasheet-2

Table Of Contents

ArduCAM USB Camera Shield Application Note

4 Tune the Sensor Registers

4.1 Identify the Sensor Version

Sensor register address 0x00 is read only, and always return the chip vision 0x1313 when

read it.

Input the register address 0 in decimal to the RegAddr dialog box and click read button, the

Value dialog box will show 4900 in decimal which is identical to 0x1313 in hex.

4.2 Adjust the Sensor Exposure

The exposure is also called Pixel Integration Control. The MT9V022 is global shutter so all

the pixels are exposed at the same time. In manual exposure mode, the total exposure time is

determined by the coarse shutter and fine shutter width registers. The actual total integration time,

tINT is defined as:

tINT = tINTCoarse + tINTFint

= (number of rows of integration × row time) + (number of pixels of integration × pixel time)

There are two sets of context that hold the coarse and fine shutter width.

Context

Coarse Shutter Width

Fine Shutter Width

Context A

0x0B

0xD5

Context B 0xD2 0x D8

The Coarse Shutter Width equals to number of rows times row time where the row time is

defined by Windows Width + Horizontal Blanking registers times master clock.

Context

Windows Width

Horizontal Blanking

Context A 0x04 0x05

Context B 0xCC 0x CD