VX6854LC datasheet(31/114 Pages) STMICROELECTRONICS

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VX6854LC

4.2

Frame format description registers [0x0040 to 0x007F]

For a full description of the frame format description refer to Chapter 5: Video data interface

on page 52.

4.3

Analogue gain description registers [0x0080 to 0x0097]

These registers are not dynamic but are required to be output on the status line so that it is

possible to interpret the meaning of the analogue gain code(s). For a full description of the

analogue gain description registers refer to Section 6.5.1: Analogue gain model on page 67.

Table 13. Frame format description registers [0x0040 to 0x007F]

Index

Byte

Data type Default Type

Comment

0x0040

frame_format_model_type

Generic frame format.

0x01: 2-byte data format. (1)

0x0041

frame_format_model_subtype

Contains the number of 2-byte data

format descriptors used.

Upper nibble defines the number of

column descriptors i.e 1.

The lower nibble defines the number

of row descriptors i.e. 2

0x0042 Hi

frame_format_descriptor_0

16C

58.10

Pixel data code: 5 (visible columns)

number of pixels : readout dependent

(Maximum of 2064)

0x0043 Lo

0x0044 Hi

frame_format_descriptor_1

16C

10.02

Pixel data code: 1 (embedded data

lines)

Number of lines: 2

0x0045 Lo

0x0046 Hi

frame_format_descriptor_2

16C

56.10

Pixel data code: 5(visible lines)

Number of lines: readout

dependent(Maximum of 1552)

0x0047 Lo

See section 4.5 of SMIA 1.0 functional specification.

Table 14. Analogue gain description [0x0080 to 0x0097]

Index

Byte

Data type Default Type

Comment

0x0080 Hi

analogue_gain_capability

16B

00.00

Analogue gain capability

0 – single global analogue gain only

0x0081 Lo

0x0084 Hi

analogue_gain_code_min

16UI

00.00

Minimum recommended analogue gain

code that is, 0 (x1 gain)

0x0085 Lo

0x0086 Hi

analogue_gain_code_max

16UI

00.F0

Maximum recommended analogue

gain code that is, 240 (x16 gain)

0x0087 Lo

0x0088 Hi

analogue_gain_code_step

16UI

00.10

Analogue gain code step size(1)

0x0089 Lo

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