VX7000 CCIR656 - Datasheet Archive

 

Preliminary Product Brief Advanced Video Capture DESCRIPTION FEATURES The VX7000 provides a low-cost, n high performance chip

 

VX7000 VX7000 Preliminary Product Brief Advanced Video Capture DESCRIPTION FEATURES The VX7000 VX7000 provides a low-cost, n high performance chip solution to the audio/video compression & capture application. VX7000 VX7000 can accept NTSC/PAL video in 8-bit n YUV 4:2:2 format (CCIR656 CCIR656). Built-in high performance n compression algorithm provides good quality 30 frames per second in 704x480 (NTSC) or 25 frames per second in 704x576 (PAL) n resolution. VX7000 VX7000 provides AC'97 serial interface for audio sampling & capture function. On- n chip memory controller is used to interface to 16 bits data bus SDRAM, which provides frame memory and bit stream buffer. The compressed data can be easily n access through on-chip transaction unit. Bit stream can be n accessed direct by Micro-P through host I/F. VX7000 VX7000 also provides direct pass through n paths. Specially designed PCI interface and hardwired TCP/IP n protocol handler can handle handshaking with Ethernet chip without a powerful CPU plus n RTOS. For connection with USB chip, VX7000 VX7000 provides a spilt DMA n bus. EPP I/F provides another path to access bit stream. By using adaptive frame rate methodology plus bandwidth n limitation factor, VX7000 VX7000 can auto balance to transmission bandwidth and CPU processing capability. APPLICATIONS Support CCIR656 CCIR656 YUV 4:2:2 n High Quality PC Theater image inputs from video decoder n PC Based DVR chips. High speed compression support n Transfer VHS/V8/Hi8/D8 tapes to VCD/DVD real time image output. n Surveillance Encodes in 704x480(NTSC) / 704x576(PAL) picture format at 30 / 25fps. n Web Camera or Net Meeting Support AC'97 serial interface using audio codec. Professional snapshot mode: Programmable frames, 24bits true color BMP files, resolution up to 704x480(NTSC) / 704x576(PAL), SDRAM interface: 16Mb or 64Mb, 16 bits data bus. PACKAGE n 160 pin PQFP Host interface: X86 8 bit local bus (ISA). Provides PCI interface to access Ethernet chip directly. Provides DMA/EPP interface to access USB 1.1/2.0 chip directly. Provides hardwired TCP/IP handler for LAN. Adaptive frame rate and bandwidth for transmission / network. 3.3V power supply. SDRAM 16Mb/64Mb AC97 (Audio) CCIR656 CCIR656 (Video) VX7000 VX7000 VX-AVC PCI Ethernet chip HOST I/F(8bit) P.1/P.2 VXIS Technology Corp., reserves the right to change or modify the information contained herein without notice. Contact VXIS or visit the website to ensure the most recent revision of the document. 020725 VX7000 VX7000 Preliminary Product Brief Advanced Video Capture FUNCTIONAL BLOCK DIAGRAM VLC CCIR656 CCIR656 YUV in image pre_proc MMU AC' 97 interface Encoder Block Proc SDRAM AC' 97 I/F unit PCI unit or GPIO_A Access Unit DMA unit or GPIO_B PCI I/F for Ethernet chip or GPIO Group A Access I/F for USB chip or GPIO Group B Host I/F BLOCK DESCRIPTION n AC'97 Interface Unit: Provides AC'97 digital access interface. n Block Proc Unit: Analysis characteristic of image block , motion detection and configurable quantization function. n Image Pre-Process Unit: Transfer line based image to block based image; built in video filter provides two modes n Encoder Unit: Provides image setting for quality adjustment. compression function. n MMU: Memory management unit, handle SDRAM access. n VLC Unit: Provides variable length coding function. n Access Unit: Handle host and access interface for registers setting & bit stream access. n PCI Unit: Provides PCI interface for ethernet chip control and packet handle. It also can be configured to GPIO function when PCI I/F was unnecessary. n DMA Unit: Provides DMA function for USB chip. It can be configured to EPP interface for other applications. It also can be configured to GPIO function when DMA or EPP I/F was unnecessary. P.2/P.2 VXIS Technology Corp., http://www.vxis.com 5F-1, NO.9, Prosperity Road I, Science Based Industrial Park, Hsinchu City, Taiwan 300, R. O. C., Tel:886-3-5630888, Fax:886-3-5630889 020725