CS4955-CQ Просмотр технического описания (PDF) - Cirrus Logic

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CS4955-CQ

NTSC/PAL Digital Video Encoder

Cirrus Logic 

CS4954 CS4955

5.11. Teletext Support ..................................................................................................... 23

5.12. Color Bar Generator ............................................................................................... 25

5.13. VBI encoding .......................................................................................................... 25

5.14. Super White/Super Black support .......................................................................... 26

5.15. Interrupts ................................................................................................................ 26

5.16. General Purpose I/O Port ....................................................................................... 26

6. FILTER RESPONSES ...................................................................................................... 27

7. ANALOG .......................................................................................................................... 30

7.1. Analog Timing ........................................................................................................ 30

7.2. VREF ...................................................................................................................... 30

7.3. ISET ....................................................................................................................... 30

7.4. DACs ...................................................................................................................... 30

7.4.1. Luminance DAC .......................................................................................... 30

7.4.2. Chrominance DAC ...................................................................................... 30

7.4.3. CVBS DAC .................................................................................................. 31

7.4.4. Red DAC ..................................................................................................... 31

7.4.5. Green DAC .................................................................................................. 31

7.4.6. Blue DAC ..................................................................................................... 31

8. PROGRAMMING .............................................................................................................. 32

8.1. Host Control Interface ............................................................................................ 32

8.1.1. I2C Interface ................................................................................................ 32

8.1.2. 8-bit Parallel Interface ................................................................................. 33

8.2. Register Description ............................................................................................... 34

8.2.1. Control Registers ......................................................................................... 34

9. BOARD DESIGN AND LAYOUT CONSIDERATIONS .................................................... 50

9.1. Power and Ground Planes ..................................................................................... 50

9.2. Power Supply Decoupling ...................................................................................... 50

9.3. Digital Interconnect ................................................................................................ 50

9.4. Analog Interconnect ............................................................................................... 50

9.5. Analog Output Protection ....................................................................................... 51

9.6. ESD Protection ....................................................................................................... 51

9.7. External DAC Output Filter ..................................................................................... 51

10. PIN DESCRIPTION ......................................................................................................... 53

11. PACKAGE DRAWING ...................................................................................................... 55

DS278PP4

3

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