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
