VV6410 datasheet(78/105 Pages) STMICROELECTRONICS

78 / 105 page

VV5410 & VV6410

Serial Control Bus

cd5410-6410f-3-0.fm

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78/105

[112 - 113],

[70-71] - Black Pixel Offset

[114],

[72] - Black Pixel Cancellation Setup Register

[115],

[73] - unused

[116],

[74] - reserved

[117 - 118],

[75-76] - Control Registers 0 and 1- CR0 and CR1

Although we give the user access to the following 5registers it is not anticipated that the contents of these registers will have to be

altered. If the user does wish to alter any of the register bits then they are strongly advised to contact VIBU before doing so.

Bit

Function

Default

Comment

2:0

MS Black line pixel offset

- 64

This register contains a ﬁxed offset that can be applied to

the digitised pixels in the digital 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

7:0

LS Black line pixel offset

Table 51 : [112 - 113],

[70-71] - Black Pixel Offset

Bit

Function

Default

Comment

1:0

Black line offset cancellation

x0 - Accumulate black pixels, calculate

black pixel average and report, but don’t

apply anything to data stream

01 - Accumulate black pixels, calculate

black pixel average and report and apply

internally calculated offset to data stream

11 - Accumulate black pixels, calculate

black pixel average and report, but apply an

externally calculated offset

4:2

reserved

100

The time constant controls the rate at which

a change in the black level is corrected for.

Use narrow black offset deadband

Yes/No

The deadband describes a range of pixel

averages that will cause the leaky integrator

algorithm to hold it’s current value.

0 - Target +/- 4 codes

1 - Target +/- 2 codes

7:6

unused

Table 52 : [114],

[72] - Black offset cancellation setup

Bit

Function

Default

Comment

Enable bit line clamp

Off/On

Enable bit line test

Off/On

Table 53 : [117],

[75] - Control Register CR0

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