CMV2000 datasheet(50/87 Pages) AMSOSRAM

50 / 87 page

CMV2000

Functional description

Datasheet

• PUBLIC • Document Feedback

DS000734

• v8-00 • 2025-Jul-07

50 / 87

To calculate back from actual exposure time to the register value for internal exposure can use

the following formula (exposure time and clk_per should have the same time unit):

��_�� =

��

129 ∗ ��_��

− 0.43 ∗ ��_��ℎ

For very short integration times, the fot_length should be lowered to 5 and the maximum clock

speed should be used. In internal exposure mode, the shortest exposure time is limited by the

exp_time register, when this is set to 1, the shortest exposure time is 14.24 µs, or 8.47 µs for

fot_length = 5.

In external exposure mode, the time between T_EXP1 and FRAME_REQ can be as short as

one clock cycle, reducing the shortest exposure time even more to 11.58 µs, or 5.80 µs for

fot_length = 5.

7.4.2

High dynamic range modes

The sensor has different ways to achieve high optical dynamic range in the grabbed image.

•

Interleaved read-out: the odd and even rows have a different exposure time.

•

Piecewise linear response: pixels respond to light with a piecewise linear response curve.

•

Multi-frame read-out: Different frames are read-out with increasing exposure time.

All the HDR modes mentioned above can be used in both the internal and external exposure

time mode.

7.4.2.1

Interleaved read-out

In this HDR mode, the odd and even rows of the image sensors will have a different exposure

time. This mode can be enabled by setting the register Exp_dual.

Table 12: Interleaved read-out

– HDR mode enabling

Default value

Description of the value

Exp_dual

41[1]

0: Interleaved exposure mode disabled

1: Interleaved exposure mode enabled

The surrounding system can combine the image of the odd rows with the image of the even

rows which results in a high dynamic range image. In this image, very bright and very dark

objects are made visible without clipping. The Table 13 gives an overview of the registers

involved in the interleaved read-out when the internal exposure mode is selected.

CMV2000 데이터시트(PDF) 50 Page - ams-OSRAM AG

CMV2000 데이터시트(HTML) 50 Page - ams-OSRAM AG

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87

데이터시트 다운로드

링크 URL