STV2246 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STV2246

I²C bus-controlled multistandard single chip TV processor

STMicroelectronics 

STV224X, STV228X, STV223X - I²C BUS SELECTION

Reg.

Addr.

(Hex)

Description

Data

Bits

d7 d6 d5 d4 d3 d2 d1 d0

Comments

Crystal Selection

2 X X X X X 0 0 X XTAL1 (4.43/3.5XX MHz).

X X X X X 0 1 X XTAL2 (3.5XX MHz).

X X X X X 1 0 X XTAL3 (3.5XX MHz).

X X X X X 1 1 X Not allowed.

Standard Selection

13

2 X X X 0 0 X X X PAL.

X X X 0 1 X X X NTSC.

X X X 1 0 0 0 0 SECAM (only with XTAL1).

X X X 1 0 0 1 X Not allowed.

X X X 1 0 1 0 X Not allowed.

X X X 1 1 X X X AUTO mode.

X X X X X 1 1 X Not allowed

t(s) Crystal Inhibition

2 X X 0 X X X X 0 Two-crystal, P/S/N application.

X X 0 X X X X 1 Three-crystal, P/N application.

X X 1 X X X X 0 One-crystal, P/S/N 4.43 MHz application.

X X 1 X X X X 1 Two-crystal, P/N application.

Not to be used

2 0 0XXXXXX

c 14 Hue Control

u (in NTSC only)

6 X X 0 0 0 0 0 0 -45°.

X X 1 1 1 1 1 1 +45°.

rod Flesh Enable

1 X 0 X X X X X X 0 = Flesh disable (OFF).

X 1 X X X X X X 1 = Flesh enable (ON).

Wide Flesh Charac- 1 0 X X X X X X X 0 = Normal characteristic.

P Teristic Selection

1 X X X X X X X 1 = Wide characteristic.

15

te Main Video Switch

2 X X X X X X 0 0 CVBS1 selected.

X X X X X X 0 1 CVBS2 selected.

X X X X X X 1 X Y/CVBS3 selected.

le 2 X X X X 0 0 X X CVBS1 selected.

o Second Video Switch

X X X X 0 1 X X CVBS2 selected.

s Control

X X X X 1 0 X X Y/CVBS3 selected.

b X X X X 1 1 X X Y+C selected.

O SVHS Switch Chroma 1 X X X 0 X X X X 0 = Main CVBS selected.

Decoder Input Selec-

X X X 1 X X X X 1 = CHR input selected (SVHS).

- tion

) Not to be used

2 X0 0XXXXX

t(s Safety Reset

1 0 X X X X X X X 0 = Safety active

1 X X X X X X X 1 = Reset Safety, Safety non-active

uc 6.3.8 Scanning Controls

d Reg.

ro Addr.

(Hex)

P 16

Description

Horizontal Shift

teHorizontal Output

le Pulse Disable

bso Interlace

Data

Bits

d7 d6 d5 d4 d3 d2 d1 d0

Comments

6 X X 0 0 0 0 0 0 -2.5 µs.

X X 1 1 1 1 1 1 +2.5 µs.

1 X 0 X X X X X X 0 = Normal mode.

X 1 X X X X X X 1 = HOUT disable (high level).

1 0 X X X X X X X 0 = Interlace mode.

1 X X X X X X X 1 = De-interlace mode.

52/86

Share Link: