Intel E3815 FH8065301567411 Data Sheet

Intel

®

 Atom™ Processor E3800 Product Family

1044

Datasheet

At a high level, the Camera Subsystem supports the following modes:

• Preview
• Image  capture
• Video  capture

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. 

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. 

• 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 

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 

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.

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. 

The Camera Subsystem consists of 2 parts, the hardware subsystem and a software 
stack that implements the ISP functionality on top of this hardware.