DMA2286

MICRONAS INTERMETALL DMA 2275, DMA 2286 C/D/D2-MAC Descrambler MICRONAS Edition May 20, 1992 6251-330-1E DMA 2275, DMA 2286 Contents Page 4 4 4 5 6 6 6 6 6 7 7 7 7 8 8 8 8 8 9 9 10 10 11 12 12 13 13 18 19 19 20 21 23 24 25 26 28 29 29 Section 1. 1.1. 1.2. 2. 3. 3.1. 3.2. 3.3. 3.4. 4. 4.1. 4.2. 4.3. 5. 5.1. 5.2. 5.3. 5.4. 6. 6.1. 7. 7.1. 7.2. 8. 8.1. 8.2. 8.2.1. 8.3. 8.4. 8.4.1. 8.4.2. 8.4.3. 8.4.4. 8.4.5. 8.4.6. 8.4.7. 8.4.8. 8.4.9. 8.5. Title Introduction General Information Environment Chip Architecture Video Processor Code Converter Video Descrambler Interpolation Filter Clamping and Video Gate PRBS Generator Video PRBS Generator Packet PRBS Generator VBI Descrambler Line 625 Processor Majority Decision BCH Check Frame Counter Flywheel RTCI Detector Sound Processor The S Bus Interface and the S Bus Packet Processor Packet Acquisition Packet Descrambler Interface Processor Fast Processor IM Bus Interface IM Bus Addresses and Instructions DRAM Interface DRAM Memory Map Mode Register Pac1 Register Pac2 Register Coeff Register CW Register Error Buffer Packet Buffer Line 625 Buffer Scratch Buffer FP Memory Map 2 DMA 2275, DMA 2286 Contents, continued Page 31 31 31 34 34 35 36 36 37 39 40 42 44 46 Section 9. 9.1. 9.2. 9.3. 9.4. 9.5. 9.6. 9.6.1. 9.6.2. 9.6.3. 9.6.4. 9.6.5. 9.6.6. 10. Title Specifications Outline Dimensions Pin Connections Pin Configuration Pin Descriptions Pin Circuits Electrical Characteristics Absolute Maximum Ratings Recommended Operating Conditions Chara...