CX25854中文資料CONEXANT數(shù)據(jù)手冊(cè)PDF規(guī)格書

4-Channel Audio/Video Decoder with Integrated PCIe Interface

High Quality Audio and Video Decoders for Surveillance Applications

The CX25854 4-Channel Audio/Video Decoderwith Integrated PCIe Interface was designed for surveillance applications. The CX25854 contains four high quality NTSC/PAL video decoders with 10-bit A/Dsand 5-line comb filtering, to generate the highest quality digital video output with the lowest possible noise. This creates not only the best image quality for viewing, but enables lower bitrates for compression devices using the output of the CX25854.

Distinguishing Features

Four High-Quality NTSC/PAL video decoders:

– Anti-alias filters

– 10-bit A/Ds

– 5-line comb filtering

– Independent scaling

Four Mono audio A/Ds

– Variable sample rates

– I2S outputs

Flexible digital video output formats at 27, 54, and 108 MHz

– Byte-interleaved

– Line-interleaved

– Frame-interleaved (requires external DDR2 memory)

PCIe 1.1 x1 interface

Interface to Maxim CODECs for bridging of compressed data to PCIe

Tiling and cascading functions (requires external DDR2 memory)

Programmable Motion Detection

48 GPIO pins