BT848AKPF

The Brooktree BT848AKPF is a low-cost, single-chip video capture IC designed for the PCI bus. It functions as a bus master, eliminating the need for local memory buffers for video pixel data, thus reducing hardware costs. This component leverages the high bandwidth and multimedia capabilities of PCI systems.

Key features include full PCI Rev. 2.1 compliance, support for image resolutions up to 768x576 (full PAL resolution), and multiple YCrCb and RGB pixel formats on output. It accepts NTSC/SECAM/PAL analog inputs and supports multiple composite and S-video inputs. The device also offers VBI data capture for closed captioning, teletext, and intercast data decoding.

Additional capabilities include image size scaling down to icon size using interpolation filtering, support for different destinations for even and odd fields, and mapping of video to a 225-color palette. The Bt848A/849A enhancements, which include the Bt848 functionality, add support for peaking, single crystal operation, and digital camera input through the GPIO port.

Applications for the BT848AKPF include PC TV, intercast receivers, desktop video phones, motion video capture, still frame capture, and VBI data services capture. Its design allows for modular addition of video capture and overlay capabilities to PCI systems.