VV6410 datasheet(62/105 Pages) STMICROELECTRONICS

62 / 105 page

VV5410 & VV6410

Serial Control Bus

cd5410-6410f-3-0.fm

Commercial in confidence

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according to function with each group occupying a 16-byte page of the location address space. There may be up to eight such

groups, although this scheme is purely a conceptual feature and not related to the actual hardware implementation, The primary

categories are given below:

•

Status Registers (Read Only).

•

Setup registers with bit significant functions.

•

Exposure parameters that influence output image brightness.

•

System functions and analog test bit significant registers.

Any internal register that can be written to can also be read from. There are a number of read only registers that contain device

status information, (e.g. design revision details).

Names that end with H or L denote the most or least significant part of the internal register. Note that unused locations in the H

byte are packed with zeroes.

STMicroelectronics sensors that include a 2-wire serial interface are designed with a common address space. If a register

parameter is unused in a design, but has been allocated an address in the generic design model, the location is referred to as

reserved. If the user attempts to read from any of these reserved or unused locations a default byte will be read back. In

VV5410/VV6410 this data is 19H. A write instruction to a reserved (but unused) location is illegal and would not be successful as

the device would not allocate an internal register to the data word contained in the instruction.

A detailed description of each register follows. The address indexes are shown as decimal numbers in brackets [....] and are

expressed in decimal and

hexadecimal respectively.

Index10

Index16

Name

Length

R/W

Default

Comments

Status Registers - [0-15]

deviceH

0001_10012

Chip identification number including

revision indicator

deviceL

1010_00002

status0

0001_00002

User can determine whether timed

serial interface data has been

consumed by interrogating flag states

line_countH

n/a

Current line counter value

line_countL

n/a

xendH

359

End x coordinate of image size

xendL

yendH

293

End y coordinate of image size

yendL

dark_avgH

This is the average pixel value

returned from the dark line offset

cancellation algorithm

(2’s complement notation)

dark_avgL

black_avgH

This is the average pixel value

returned from the black line offset

cancellation algorithm

(2’s complement notation)

black_avgL

status1

Flags to indicate whether the x or y

image coordinates have been clipped

14-15

E-F

unused

Setup Registers - [16-31]

Table 19 : Serial Interface Address Map.

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