SINGLE IC CMOS COLOR AND B/W DIGITAL CAMERAS

March 4, 2000

Version 1.0

6

The OV6630/OV6130 imager supports both ITU-601 and ITU-656

output formats in the following configurations (See Table 3. 4:2:2 16-

bit Format for further details):

-

16-bit, 4:2:2 format

(This mode complies with the 60/50 Hz ITU-601 timing

standard. See Table 3. 4:2:2 16-bit Format below)

-

8-bit data mode

(In this mode, video information is output in Cb Y Cr Y

order using the Y port only and running at twice the pixel

rate during which the UV port is inactive. See Table 4. 4:2:2

8-bit Format below)

-

4-bit nibble mode

(In the nibble mode, video output data appears at bits Y4-

Y7. The clock rate for the output runs at twice the normal

output speed when in B/W mode, and 4 times the normal

output speed in when in color mode.)

-

704 x 288 format

(When programmed in this mode, the pixel clock is doubled

below.)

The OV6630/OV6130 imager provides VSYNC, HREF, PCLK,

FODD, and CHSYNC as standard output video timing signals.

The OV6630/OV6130 imager can also be programmed to provide

RGB raw data in 16-bit, 8-bit, and 4-bit format. The output sequence

is matched to the OV6630 color filter pattern (See Figure 5. Pixel

Data Bus (RGB Output) below):

– Y channel output sequence is G R G R

– UV channel output sequence is B G B G

The video output appears in Y channel only and the UV channel is

disabled in 8-bit RGB raw data. The output sequence is B G R G.

In RGB raw data ITU-656 modes, the OV6630/OV6130 imager

asserts SAV (Start of Active Video) and EAV (End of Active Video)

to indicate the beginning and the ending of HREF window. As a

result, SAV and EAV change with the active pixel window. The 8-bit

RGB raw data is also accessible without SAV and EAV information.

The OV6630/OV6130 imager offers flexibility in YUV output format.

The device may be programmed as standard YUV 4:2:2. The device

may also be configured to “swap” the U V sequence. When swapped,

the UV channel output sequence in the 16-bit configuration becomes:

-

V U V U···.

The 8-bit configuration becomes:

-

V Y U Y···.

The third format available in the 8-bit configuration is the Y/UV

sequence swap:

-

Y U Y V···.

The single-chip camera can be configured for use as a black and white

image device. The vertical resolution is higher than in color mode.

Video data output is provided at the Y port and the UV port is tri-

stated. The data (Y/RGB) rate is equivalent to 16-bit in color mode.

The MSB and LSB of Y/UV or RGB output can be reversed. Y7 is

MSB and Y0 is LSB in the default setting. Y7 becomes LSB and Y0

becomes MSB in the reserve order configuration. Y2-Y6 are also

reversed appropriately.

Table 2. Digital Output Format

Resolution

Pixel Clock

352 x 288

704 x 288

176 x 144

16-bit

Y

Y

Y

8-bit

Y

Y

Y

ITU-656

Y

Y

Y

YUV 4:2:2

Nibble

Y

Y

Y

16-bit

Y

Y

Y

8-bit

Y

Y

Y

ITU-656

1

Y

Y

Y

RGB

Nibble

Y

Y

Y

16-bit

Y/UV swap

2

8-bit

Y

Y

Y

YUV

3

Y

Y

Y

U/V swap

RGB

4

Y

Y

Y

16-bit

Y

Y

Y

YG

8-bit

16-bit

Y

One Line

8-bit

MSB/LSB swap

Y

Y

Y

Note:

(“Y” indicates mode/combination is supported by OV6630/OV6130)

1. Output is 8-bit in RGB ITU-656 format. SAV and EAV are inserted at the beginning and ending of HREF, which

synchronize the acquisition of VSYNC and HSYNC. 8-bit data bus configuration (without VSYNC and

CHSYNC) can provide timing and data in this format.