CX25820/1 PCI-Express Media Bridge
Conexant’s CX25820 and CX25821 chipsets are highly integrated and flexible multi-channel video and audio PCI-Express Media Bridges specifically designed for PC-based security Digital Video Recorders (DVRs). The devices enable multiple bi-directional digital video and audio transfers to a host PC via a PCIe x1 interface. Both chipsets are easily customizable for a variety of applications and designs, and contain programmable logic to detect motion on incoming video streams allowing the devices to alert the host processor of motion via interrupts over PCIe.
The CX25821 interfaces directly to Conexant’s CX25853 multi-channel video decoder to form a complete PC-DVR solution capable of capturing and bridging eight channels of real-time, full D1 video to the host with support for playback for two NTSC/PAL video channels from the host.
Features
- EDN Innovation Awards China Finalist - Best Network and Communications IC
- PCIe 1.1 compliant
- Bi-directional BT.656 interfaces to PCIe
- Bi-directional I2S interfaces to PCIe
- Connects directly to Maxim CODECs
- Programmable Motion Detection
- Supports “54 MHz Mode” digital video data
- 8- or 16-bit “Data-Pump Mode” allows host to drive generic data to devices on card
- 48 GPIO pins
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