Intel E3845 FH8065301487715 Data Sheet
Product codes
FH8065301487715
MIPI-Camera Serial Interface (CSI) and ISP
Intel
®
Atom™ Processor E3800 Product Family
1044
Datasheet
15.4
Functional Description
At a high level, the Camera Subsystem supports the following modes:
• Preview
• Image capture
• Video capture
• Image capture
• Video capture
15.4.1
Preview Mode
Once the ISP and the camera subsystem is enabled, the ISP goes into the preview
mode where very low resolution frames, such as VGA/480p (programmable), are being
processed.
mode where very low resolution frames, such as VGA/480p (programmable), are being
processed.
15.4.2
Image Capture
During the image capture mode, the camera subsystem can acquire at a peak
throughput of 24 Mpixels @ 15fps. While doing this, it continues to output preview
frames simultaneously.
throughput of 24 Mpixels @ 15fps. While doing this, it continues to output preview
frames simultaneously.
• The ISP can output RAW, RGB or YUV formats. The ISP can capture one full frame
at a time or perform burst mode capture, where up to five full back-to-back frames
are recorded.
• The ISP will not limit the number of back-to-back full frames captured, but the
number is programmable and determined on how much memory can be allocated
dynamically.
• The ISP can process all the frames on the fly and writes to memory only after fully
processing the frames, without requiring download of any part of the frame for
further processing.
—The exceptions to this approach are image stabilization and some other advanced
—The exceptions to this approach are image stabilization and some other advanced
functions requiring temporal information over multiple frames.
The ISP can support image stabilization in image capture model.
• The ISP initially outputs preview frames.
• When the user decides to capture the picture, image stabilization is enabled. The
• When the user decides to capture the picture, image stabilization is enabled. The
ISP checks the previous frame for motion and compensates for it appropriately.
Auto Exposure (AE), Auto Focus (AF), and Auto White Balance (AWB), together known
as 3A, are implemented in the CPU to provide flexibility.
as 3A, are implemented in the CPU to provide flexibility.
15.4.3
Video Capture
During video recording, the ISP can capture video up to 1080p @ 60 fps and output
preview frames concurrently. The ISP output video frames to memory in YUV420 or
YUV422 format.
preview frames concurrently. The ISP output video frames to memory in YUV420 or
YUV422 format.
15.4.4
ISP Overview
The Camera Subsystem consists of 2 parts, the hardware subsystem and a software
stack that implements the ISP functionality on top of this hardware.
stack that implements the ISP functionality on top of this hardware.