OV9120 datasheet(13/24 Pages) OMNIVISION

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DATASHEET

OV9620/OV9120 Datasheet

Doc #DS102

Page 12

Video Output

The video output port of the OV9620/OV9120 CameraChip

provides various output formats/standard options to suit

many different application requirements. Table 6, Digital

Output Format indicates the output formats available. These

formats are user-programmable through the SCCB interface.

Table 6. Digital Output Format

Progressive

Format

Pixel

Clock

1280x1024

SXGA

640x480

VGA

RGB Raw

Data

10-bit

B/W

Digital Video

Port

ZV Port

Interface

(“Y” indicates mode/combination is supported by

OV9620/OV9120)

RGB Raw Data Output

The OV9620/OV9120 CameraChip offers 10-bit RGB Raw

Data output.

B/W Output

The CameraChip can be configured for use as a black and

white imaging device. The vertical resolution is higher than in

color mode.

Digital Video Port

MSB/LSB Swap

OV9620/OV9120 has a 10-bit digital video port. The MSB

and LSB can be swapped with the control registers. Figure

16 shows some examples of connections with external

devices.

Figure 17. Example of Connection

MSB d9

LSB d0

Default 10bit Connection

LSB d9

MSB d0

Swap 10bit Connection

MSB d9

LSB d0

Default 8bit Connection

LSB d9

MSB d0

Swap 8bit Connection

Line/Pixel Timing

The OV9620/OV9120 digital video port can be programmed

to work in either master or slave mode.

In both master and slave modes, pixel data output is

synchronous with PCLK (or MCLK if port is a slave), HREF

and VSYNC. The default PCLK edge for valid data is the

negative edge but may be programmed with register [15] bit4

for the positive edge. Basic line/pixel output timing is

illustrated in Figures 17 and 18.

To minimize image capture circuitry and conserve memory

space, PCLK output can be programmed with register [15]

bit5 to be gated by the active video period as defined by the

HREF signal. See Figure 16 for illustration.

Figure 18. PCLK Output Only at Valid Pixels

HREF

VSYNC

PCLK

PCLK active edge negative

PCLK

PCLK active edge positive

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