Eurotech ZEUS, Technical Manual

Page: 59 / 136

ZEUS Technical Manual Detailed hardware description
© 2007 Eurotech Ltd Issue D
59
Quick Capture camera interface
The Quick Capture camera interface is a component of Intel Quick Capture technology
which provides a connection between the PXA270 processor and a camera image
sensor. The Quick Capture interface is designed to work primarily with CMOS-type
image sensors and supports up to 4 Megapixel resolution. However, it may be possible
to connect some CCD-type image sensors to the PXA27x processor (PXA27x
processor), depending on a specific CCD sensor’s interface requirements.
The Quick Capture interface acquires data and control signals from the image sensor,
and performs the appropriate data formatting prior to routing the data to memory, using
direct memory access (DMA). A broad range of interface and signalling options
provides direct connection. The image sensor can provide raw data through a variety
of parallel and serial formats. For sensors that provide pre-processing capabilities, the
Quick Capture interface supports several formats for RGB and YCbCr colour space.
The Quick Capture interface signals are connected to the header J9. The I
2
C interface
is available on the same header since most of the camera image sensors require an
I
2
C control interface. For I
2
C bus address map on the ZEUS, see the section I²C bus
on the previous page. For connector details, see the section J9 – Camera interface
connector , page 82 .