ADV612

The ADV611/ADV612 are low cost, single chip, dedicated function, all-digital-CMOS-VLSI devices capable of supporting visually loss-less to 7500:1 real-time compression and decompression of CCIR-601 digital video at very high image quality levels. The chips integrate glueless video and host interfaces with on-chip SRAM to permit low part count, system level implementations suitable for a broad range of applications.

The ADV611/ADV612 are 100% bitstream compatible with the ADV601. It comes in a 120-lead LQFP package.

The ADV611/ADV612 are video encoders/decoders optimized for closed circuit TV (CCTV) applications. With the product, you can define a portion of each video field to be at a higher quality level relative to the rest of the field. This "quality box" feature significantly increases compression of less important background details, while retaining the image's overall context. Additionally, the unique subband coding architecture of the product offers many application-specific advantages. A review of the General Theory of Operation and Applying the ADV611/ADV612 sections will help you get the most use out of the ADV611/ADV612 in any given application.

The ADV611/ADV612 accept component digital video through the Video Interface and outputs a compressed bitstream though the Host Interface in Encode Mode. While in Decode Mode, the products accept compressed bitstream through the Host Interface and outputs component digital video through the Video Interface. The host accesses all of the ADV611/ADV612's control and status registers using the Host Interface. Figure 2 summarizes the basic function of the part.