Multi-Channel Video and Audio to PCIe Bridge

The CX25820/1 multi-channel media bridge devices enable bi-directional digital video and audio transfers to a host PC via a PCIe x1 interface. The CX25820 and CX25821 contain BT.656/VIP2.0 digital video interfaces supporting 27 MHz input clock rates and I2S digital audio interfaces supporting up to 96 kHz sample rates, for uncompressed video and audio data respectively. Both devices are designed for PC-based security Digital Video Recorders (DVRs) supporting PAL and NTSC applications.

Distinguishing Features

PCIe 1.1 Compliant

Bi-directional BT.656 interfaces to PCIe

Bi-directional I2S interfaces to PCIe

Programmable Motion Detection

Supports “54 MHz Mode” digital video data (2 channel byte-interleaved mode)

48 GPIO pins

Applications

PAL and NTSC PC-based DVRs

Multi-monitor Displays