STV2112B datasheet(6/24 Pages) STMICROELECTRONICS

6 / 24 page

2C BUS SPECIFICATION (continued)

Input Signals (Write Mode) (continued)

CHROMA

Address

Dec (HEX)

Description

Data

(Bits)

Comments

9 (09)

Not used

10 (0A)

Standard Selection

XXXX SSSS

0000 = PAL/XTAL1 (4.43MHz)

0100 = SECAM/XTAL1

011X = Auto/90

0001 = Not allowed

0010 = Not allowed

0011 = Not allowed

0101 = Not allowed

1000 = Not allowed

1001 = Not allowed

1010 = Not allowed

1011 = Not allowed

111X = Not allowed

1100 = Not allowed

1101 = Not allowed

10 (0A)

SVHS Selection

XXXS XXXX

0 = No SVHS (CVBS mode)

1 = SVHS mode

DEFLECTION

Address

Dec (HEX)

Description

Data

(Bits)

Comments

11 (0B)

Horizontal Shift

XX00 0000 = -2.5

µs

XX11 1111 = +2.5

µs

12 (0C)

Vertical Amplitude

XX00 0000 = 1.2V

XX11 1111 = 6.2V

13 (0D)

Vertical Position

XXXX X000 = 3.8V

XXXX X111 = 6.3V

13 (0D)

50/60Hz Selection

XXXS SXXX

00 = Automode

01 = Not allowed

10 = 50Hz

11 = Not allowed

13 (0D)

Horizontal Output (HOUT) Safety

XXSX XXXX

0 = Normal mode

1 = HOUT disabled (high level)

14 (0E)

PLL1 Time Constant

XXXX XXSS

00 = Normal mode (Auto)

01 = Short time constant

10 = Very long time constant

11 = PLL1 inhibition (open loop)

14 (0E)

Interlace

XXXX XSXX

0 = Interlace

1 = DE-Interlace

14 (0E)

4/3 16/9 Selection

XXXX SXXX

0 = 4/3 (VOUT-Low = 2V)

1 = 16/9 (VOUT-Low = 0.1V)

STV2112B

6/24

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