Video Video Surveillance/Security Applications Multi-Channel Video Decoder CX25850/1/3 Conexant’s portfolio includes a comprehensive suite of semiconductor solutions for broadband communications and the digital home. 0 High Quality Integrated Video Surveillance System Front-End The CX25850/1/3 multi-channel video decoder devices contain fast locking and low signal locking features designed specifically for the video surveillance market. The CX25850 and CX25851 both integrate four analog video decoders, each with a high-performance 10-bit ADC, full 10-bit data path through the decoder, and independent scaling. Eight composite video inputs allow the user to multiplex between two cameras on each video decoder input. The CX25853 integrates eight of the same high quality decoders and sixteen composite video inputs. The CX25850/1/3 also contain two analog video encoders and a digital monitor output port. All three devices support BT.656 digital video interfaces. The CX25851 also supports Synchronous Pixel Interface (SPI) digital video interfaces. All devices are designed for PC-based and embedded/stand-alone security Digital Video Recorders (DVRs). Distinguishing Features Flexible Architecture • Integrated NTSC/PAL video decoding and encoding With two composite input ports per decoder, the CX25850/1 supports direct • 10-bit ADCs and DACs connections for eight cameras, and the CX25853 supports sixteen cameras. • Analog composite video interfaces This eliminates the need for external video multiplexers in systems where two • Multiple video decoders with 2 analog composite inputs per decoder cameras share a video decoder. Additionally, the CX25850/1/3 contains two on-board, high quality analog video encoders with dedicated BT.656 input pins. Alternatively, these encoders may be driven by streams internal to the device. • Fast locking (<1 field) and low signal locking (100mVp-p) of driving external monitors. When connected to the monitor output port, the • Independent scaling on each video decoder path CX25850/1/3 offers users the opportunity to “scroll” between decoder outputs • BT.656/VIP digital interfaces at fixed intervals and/or switch to view a specific decoder output. • Dedicated monitor output programmable to switch between decoder paths and/or cascade multiple devices together These encoders provide surveillance DVR manufacturers with a convenient way Ease of Use The CX25850/1/3 requires minimal programming for startup using an I2C serial • Integrated anti-alias filters protocol. The devices are preconfigured in a default mode for development, • On-chip voltage regulator verification, and fast prototyping. The fast locking and low signal locking features were developed and optimized specifically for the video surveillance • 20mm X 20mm eTQFP package and 13mm x 13mm fpBGA package (CX25850) market. Fast locking ensures that each decoder within the CX25850/1/3 • 28mm X 28mm eLQFP package (CX25851) will lock to a new/switched input within one field, a feature that is useful in • 28mm X 28mm eLQFP package and 19mm x 19mm fpBGA package (CX25853) multiplexed camera systems. Low signal locking ensures that each decoder within the CX25850/1/3 will lock to composite signals as low as 100 mV peak-to-peak, a feature that helps in systems where cameras and feeds Part Number CX25850/1/3 are not perfectly terminated. Description Multi-Channel Video Decoder Video Video Surveillance/Security Applications Integrated Filters All video inputs have integrated anti-alias filters, eliminating the Conexant employs a proprietary method of luma-chroma need for external filter components. These filters help improve the separation of the composite video sources to ensure optimum video decoding process by removing aliasing artifacts prior to the video quality. digitization process. BT.656/VIP2.0 Input Interface Video Encoder NTSC/PAL CVBS CVBS-1 CVBS-2 VIN1 VIN2 Video Decoder NTSC & PAL Scaler Parallel BT.656/VIP2.0 Clock1, Data1[7:0] CVBS-3 CVBS-4 VIN3 Video Decoder NTSC & PAL Scaler Parallel BT.656/VIP2.0 Clock2, Data2[7:0] CVBS-5 CVBS-6 VIN5 VIN6 Video Decoder NTSC & PAL Scaler Parallel BT.656/VIP2.0 Clock3, Data3[7:0] CVBS-7 CVBS-8 VIN7 VIN8 Video Decoder NTSC & PAL Scaler Parallel BT.656/VIP2.0 Clock4, Data4[7:0] CVBS-9 CVBS-10 VIN9 VIN10 Video Decoder NTSC & PAL Scaler Parallel BT.656/VIP2.0 Clock5, Data5[7:0] CVBS-11 CVBS-12 VIN11 VIN12 Video Decoder NTSC & PAL Scaler Parallel BT.656/VIP2.0 Clock6, Data6[7:0] CVBS-13 CVBS-14 VIN13 VIN14 Video Decoder NTSC & PAL Scaler Parallel BT.656/VIP2.0 Clock7, Data7[7:0] CVBS-15 CVBS-16 VIN15 VIN16 Video Decoder NTSC & PAL Scaler Parallel BT.656/VIP2.0 Clock8, Data8[7:0] Video Encoder NTSC/PAL CVBS VIN4 I2C Slave SCL/SDA Monitor Output BT.656 PLL Single Crystal BT.656/VIP2.0 Input Interface Clock9, Data9[7:0] CX25850/1/3 Device Block Diagram The CX25850 is offered in a 20mm X 20mm, 176-pin eTQFP package and a 13mm x 13mm fpBGA package. The CX25851 is offered in a 28mm X 28mm, 208-pin eLQFP package. The CX25853 is offered in a 28mm X 28mm, 256-pin eLQFP and a 19mm x 19mm fpBGA package. Conexant Product Portfolio Conexant’s comprehensive product portfolio includes solutions for imaging, audio, and video applications, and analog modems that enable costeffective Internet access. The company’s broadband access products include end-to-end solutions for xDSL networks, and PON solutions for fiber optic applications. © 2008, Conexant Systems, Inc. All Rights Reserved. Conexant and the Conexant logo are registered trademarks of Conexant Systems, Inc. All other trademarks are owned by their respective owners. Although Conexant strives for accuracy in all its publications, this material may contain errors or omissions and is subject to change without notice. This material is provided AS IS and without any express or implied warranties, including merchantability, fitness for a particular purpose and non-infringement. Conexant shall not be liable for any special, indirect, incidental or consequential damages as a result of its use. 08-2828 www.conexant.com General Information: U.S. and Canada: (888) 855-4562 International: 1+ (949) 483-3000 Headquarters 4000 MacArthur Blvd. Newport Beach, CA 92660 Order# PBR-201225