STV0672 datasheet(76/105 Pages) STMICROELECTRONICS

76 / 105 page

VV5410 & VV6410

Serial Control Bus

cd5410-6410f-3-0.fm

Commercial in confidence

76/105

[38-43],

[26-3B] - reserved

[44 - 45],

[3C-3D] - Dark Pixel Offset

[46],

[3E] - Dark Pixel Cancellation Setup Register

[47],

[3F] - reserved

[48-79],

[30-4F] - reserved

9.5.4

Video Timing Registers [80 - 103],

[50-67]

Indexes in the range [80 - 103] control the generically named video timing registers, including the image pan/tilt parameters and

line & field length of the sensor. The registers are as follows:

1. line length.

2. x-offset of region of interest.

Bit

Function

Default

Comment

2:0

MS Dark line pixel offset

This register contains a ﬁxed offset that can

be applied to the digitised pixels in the dig-

ital output coding block. The offset is a 2’s

complement number, giving an offset range

-1024,+1023.

If this external offset cancellation is to be

applied then it register[46], bits[1:0] should

be reprogrammed to 2’b1x.

7:0

LS Dark line pixel offset

Table 48 : [44 - 45],

[3C-3D] - Dark Pixel Offset

Bit

Function

Default

Comment

1:0

Dark line offset cancellation

x0 - Accumulate dark pixels, calculate dark

pixel average and report, but don’t apply

anything to data stream

01 - Accumulate dark pixels, calculate dark

pixel average and report and apply

internally calculated offset to data stream

11 - Accumulate dark pixels, calculate dark

pixel average and report, but apply an

externally calculated offset

Number of dark lines used

All dark lines/Use half the number of

dark lines.

The dark line offset cancellation algorithm

can opt to only use pixels from dark lines

that are preceeded by another dark line, i.e

line choose only line 306 from line 305 and

line 306.

5:3

reserved

Use narrow dark offset deadband

Yes/No

The deadband describes a range of dark

pixel averages that will force the leaky

integrator algorithm to hold it’s current

value.

0 - Target +/- 4 codes

1 - Target +/- 2 codes

unused

Table 49 : [46],

[3E] - Dark Pixel Cancellation Setup Register

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