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