CIP3250A datasheet(13/44 Pages) MICRONAS

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ADVANCE INFORMATION

CIP 3250A

Micronas

2.12. Selectable RGB/YUV Output Formats

– RGB, 8-bit pure binary (24 bit)

– YUV 4:2:2 (16 bit) for DIGIT 2000, DIGIT 3000, and

Philips/Siemens

– YUV 4:1:1 (12 bit) for DIGIT 2000 and Philips/Siemens

– UV format selectable between 2’s complement and

binary offset

In a first stand alone application, the CIP 3250A can

serve as a RGB video analog-to-digital converter to out-

put digital R, G, and B in a pure binary format, 8 bits pure

binary per channel, and a sampling rate between 13.5

MHz and 20.25 MHz.

In a second stand alone application, the CIP 3250A can

serve as a YUV or RGB (with the matrix switched on) vid-

eo analog-to-digital converter to output digital YUV, sup-

porting various formats such as YUV 4:1:1 (12 bit) from

DIGIT 2000 and Philips, YUV 4:2:2 (16 bit) from DIGIT

2000 and DIGIT 3000, or YUV 4:2:2 (16 bit) industry

standard. Additionally, the signed format of the UV sig-

nal is programmable between 2’s complement and

binary offset. A sampling rate between 13.5 MHz and

20.25 MHz can be selected, and the YUV output data

can be low pass filtered.

In a DIGIT 2000 environment, the CIP 3250A can pro-

cess either RGB or YUV signals from the analog Input,

mix it with the digital YUV Input data – controlled by the

Fast Blank input, and generate low pass filtered output

data in the YUV 4:1:1 (12 bit) DIGIT 2000 format. A sam-

pling rate locked to the color subcarrier frequency (4*fsc)

for the NTSC or PAL video standard has to be used.

In a DIGIT 3000 environment, the CIP 3250A can pro-

cess either RGB or YUV signals from the analog input,

mix it with the digital YUV input data – controlled by the

Fast Blank input, and generate low pass filtered output

data in the YUV 4:2:2 (16 bit) DIGIT 3000 format. Addi-

tionally, the signed format of the UV signal is program-

mable between 2’s complement and binary offset. The

sampling rate is derived from the VPC 320x and ranges

from 13.5 to 20.25 MHz for all of the video standards.

The U and V chrominance samples are transmitted in

multiplex operation. Depending on the application, the

CIP 3250A provides the following different output for-

mats of the YUV signals (selectable via I2C-Bus):

– 4:1:1 orthogonal output format for DIGIT 3000 applica-

tions

– 4:2:2 orthogonal output format for DIGIT 3000 applica-

tions

– 4:1:1 output format for standard DIGIT 2000 applica-

tions

– 4:2:2 output format for DIGIT 2000 applications

Refer to I2C registers <15> to <16> to select the desired

output format. Additionally, the CIP 3250A provides con-

version of ITURY (luma) to DIGIT 2000 Y (luma) output

black levels, selectable via I2C register <16>ADD16Q.

A programmable two-dimensional active video signal

(AVO) allows the write control of external video memory

directly. The characteristic of the YUV output is select-

able between open-drain or push-pull.

Table 2–3: Digital output selection

<15>

YUVO

<15>

MOD411ON

<15>

IND

<15>

UVSW

<15>

DTI

Digital

Output Format

DIGIT 2000 4:1:1

orthogonal 4:1:1

DIGIT 2000 4:2:2

DIGIT 3000 4:2:2

4:4:4

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