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CMV8000

Functional Description

Preliminary Datasheet

• PUBLIC

DS000609

• v1-00 • 2019-Jun-12

│ 42

Equation 5:

�� =

#��

× �� × (224 × ��_�� + 1 + 112 + 2 × 113 ×

#��

)

With the above assumptions in mind and with the FOT_LENGTH register set to 50, the frame

overhead time is 196.08 µs.

The rest of the frame time is defined by the read-out sequence:

Equation 6:

�� = ((��_�� + 1) ×

#��

× �� ×

#��

) × ��_��

When reading out a full resolution image with the recommended settings in 10-bit mode this results in

a read-out time of 9522.13 µs.

The total frame time is now the sum of both the frame overhead time and the read-out time, or

9718 µs. The maximum frame rate is thus 102.9 FPS.

The table below gives a few examples of how the frame rate increases when the frame size is

reduced.

Figure 45:

Typical Frame Rates

Frame Size

Number of Columns

Number of Lines

Max Frame Rate

Full resolution

3584

2528

103

Active rows only

3584

2496

104

Largest 16/9 window

3584

1890

139

Half resolution

3584

1264

202

Largest 21/9 window

3584

1440

177

100 lines

3584

100

1746

Using 12-bit mode changes the ADC conversion time and the frame time, so the above formulas have

to be adjusted. In this case, the FOT is defined by:

Equation 7:

�� =

#��

× �� × (224 × ��_�� + 1 + 112 + 4 × 125 ×

#��

)

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