CS4954 datasheet(3/56 Pages) CIRRUS

3 / 56 page

CS4954 CS4955

DS278PP4

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

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

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

PROGRAMMING .............................................................................................................. 32

8.1.

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

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

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

8.2.

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

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

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