ADV601

The ADV601 is a very low cost, single chip, dedicated function, all digital CMOS VLSI device capable of supporting visually loss-less to 350:1 real-time compression and decompression of CCIR-601 digital video at very high image quality levels. The chip integrates 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 ADV601 is a video encoder/decoder optimized for real-time compression and decompression of interlaced digital video. All features of the ADV601 are designed to yield high performance at a breakthrough systems-level cost. Additionally, the unique sub-band coding architecture of the ADV601 offers you many application-specific advantages. A review of the General Theory of Operation and Applying the ADV601 sections will help you get the most use out of the ADV601 in any given application.

The ADV601 accepts component digital video through the Video Interface and outputs a compressed bit stream though the Host Interface in Encode Mode. While in Decode Mode, the ADV601 accepts a compressed bit stream through the Host Interface and outputs component digital video through the Video Interface. The host accesses all of the ADV601's control and status registers using the Host Interface. An optional Digital Signal Processor (DSP) may be used for calculating quantization Bin Widths (BW) (instead of the host); the ADV601 sends current field statistics and receives Bin Width results as a packet I/O over the DSP serial port interface. A generic fixed-point DSP (for instance the ADSP-2105) is more than adequate for these calculations. Figure 1 summarizes the basic function of the part.