ZR36015

ZR36015 PRELIMINARY RASTER TO BLOCK CONVERTER FEATURES s s s s s Real Time Raster to/from Block Conversion 1/2 Decimation Processing in the Horizontal Direction 30 MHz Maximum Clock Rate Only Image in Preset Window is Converted Compatable with Zorans ZR36050 JPEG Coder and ZR36011 Color Space Converter s s s s s s Supports 1:0:0,4:2:2,and 4:1:1 data formats 100-pin plastic quad flat package (PQFP) TTL level Input/Output Synchronous data and controls Low power consumption: 0.45W (Typ.) CMOS circuit operating with a single 5V power supply APPLICATIONS s Image processing s Multi-media s Scanners s Image Storage s Image Capture DESCRIPTION The ZR36015 performes raster to/from block conversion for image compression and expansion applications, and it can be connected directly to the ZR36050 JPEG coder and the ZR36011 Color Space Converter. An image compression system can be easily constructed using the ZR36015 with the ZR35060 and ZR36011. The ZR36015 uses a double buffered external SRAM Strip Buffer to support raster to/from block conversion and block interleave. The maximum number of pixels that can be processed per line is 8K. The maximum number of lines that can be prcessed per image is 16K. These numbers vary according to the mode of operation. The ZR36015 supports 4:0:0, 4:1:1, and 4:2:2 data formats, and one half decimation in horizontal direction during compression. The maximum data transfer rate to the ZR36050 coder is 30 MHz. [The ZR36015 is fabricated with an advanced...