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CS4955-CQZ Datasheet(PDF) 3 Page - Cirrus Logic |
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CS4955-CQZ Datasheet(HTML) 3 Page - Cirrus Logic |
3 / 60 page CS4954 CS4955 DS278F6 3 TABLE OF CONTENTS 1. CHARACTERISTICS AND SPECIFICATIONS ........................................................................................6 AC & DC PARAMETRIC SPECIFICATIONS ............................................................................................6 RECOMMENDED Operating Conditions .......................................................................................................6 THERMAL CHARACTERISTICS ..............................................................................................................6 DC CHARACTERISTICS ..........................................................................................................................6 AC CHARACTERISTICS ..........................................................................................................................8 TIMING CHARACTERISTICS ...................................................................................................................9 2. ADDITIONAL CS4954/5 FEATURES .....................................................................................................11 3. CS4954 INTRODUCTION ......................................................................................................................11 4. FUNCTIONAL DESCRIPTION ...............................................................................................................11 4.1 Video Timing Generator ...............................................................................................................11 4.2 Video Input Formatter ..................................................................................................................12 4.3 Color Subcarrier Synthesizer .......................................................................................................12 4.4 Chroma Path ................................................................................................................................12 4.5 Luma Path ....................................................................................................................................13 4.6 RGB Path and Component YUV Path ..........................................................................................13 4.7 Digital to Analog Converters ........................................................................................................13 4.8 Voltage Reference .......................................................................................................................14 4.9 Current Reference ........................................................................................................................14 4.10 Host Interface ...............................................................................................................................14 4.11 Closed Caption Services ..............................................................................................................14 4.12 Teletext Services ..........................................................................................................................15 4.13 Wide-Screen Signaling Support and CGMS ................................................................................15 4.14 VBI Encoding ...............................................................................................................................15 4.15 Control Registers .........................................................................................................................15 4.16 Testability .....................................................................................................................................15 5. OPERATIONAL DESCRIPTION ............................................................................................................15 5.1 Reset Hierarchy ...........................................................................................................................15 5.2 Video Timing ................................................................................................................................16 5.2.1 Slave Mode Input Interface ...............................................................................................16 5.2.2 Master Mode Input Interface .............................................................................................16 5.2.3 Vertical Timing ...................................................................................................................17 5.2.4 Horizontal Timing ..............................................................................................................17 5.2.5 NTSC Interlaced ................................................................................................................17 5.2.6 PAL Interlaced ...................................................................................................................17 5.2.7 Progressive Scan ..............................................................................................................18 5.2.8 NTSC Progressive Scan ...................................................................................................18 5.2.9 PAL Progressive Scan ......................................................................................................19 5.3 ITU-R.BT656 ................................................................................................................................19 5.4 Digital Video Input Modes ............................................................................................................21 5.5 Multi-standard Output Format Modes ..........................................................................................21 5.6 Subcarrier Generation ..................................................................................................................22 5.7 Subcarrier Compensation ............................................................................................................23 5.8 Closed Caption Insertion ..............................................................................................................23 5.9 Programmable H-sync and V-sync ..............................................................................................24 5.10 Wide Screen Signaling (WSS) and CGMS ..................................................................................24 5.11 Teletext Support ...........................................................................................................................24 5.12 Color Bar Generator .....................................................................................................................26 5.13 VBI encoding ................................................................................................................................27 5.14 Super White/Super Black support ................................................................................................27 5.15 Interrupts ......................................................................................................................................27 5.16 General Purpose I/O Port .............................................................................................................27 6. FILTER RESPONSES ............................................................................................................................29 7. ANALOG ................................................................................................................................................32 7.1 Analog Timing ..............................................................................................................................32 7.2 VREF ............................................................................................................................................32 7.3 ISET .............................................................................................................................................32 7.4 DACs ............................................................................................................................................32 7.4.1 Luminance DAC ................................................................................................................32 7.4.2 Chrominance DAC ............................................................................................................33 7.4.3 CVBS DAC ........................................................................................................................33 7.4.4 Red DAC ...........................................................................................................................33 |
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