STV2247H(2009) 查看數據表（PDF） - STMicroelectronics

零件编号

产品描述 (功能)

生产厂家

STV2247H
(Rev.:2009)

I²C bus-controlled multistandard single chip TV processor

STMicroelectronics 

STV224X, STV228X, STV223X - I²C BUS SELECTION

6.3 INPUT SIGNALS (WRITE MODE)

Not used data bits must be set to “0”.

6.3.1 PIFVCO Free Running

Reg.

Addr.

(Hex)

Description

00 PIFVCO

Free Running

Fine Adjustment

Not to be used

Data

Bits

d7 d6 d5 d4 d3 d2 d1 d0

Comments

7 0 0 0 0 0 0 0 X PIF Typical + 0.7 MHz.

1 0 0 0 0 0 0 X PIF Free Running mid range.

1 1 1 1 1 1 1 X PIF Typical - 0.7 MHz.

1 XXXXXXX0

6.3.2 PIF Free Running Coarse

Reg.

Addr.

) (Hex)

Description

t(s 01 PIFVCO Free

Running Coarse

Adjustment for

c 38.9 MHz Carrier

u PIFVCO Free

d Running Coarse

ro Adjustment for

33.9 MHz Carrier

P (L’)

te PIF Modulation

le L/L’ Standard

o Selection

s Digital AFC Defeat

b PIF

O Over-modulation

Data

Bits

d7 d6 d5 d4 d3 d2 d1 d0

Comments

X X 0 X 0 0 0 0 PIFVCO = F0 + 2.0 MHz.

4 X X 0 X 0 1 1 1 PIFVCO = F0 (mid range).

X X 0 X 1 1 1 1 PIFVCO = F0 - 1.8 MHz.

X X 1 1 0 0 0 0 PIFVCO = F0 + 1.3 MHz.

4 X X 1 1 0 1 1 1 PIFVCO = F0 (mid range).

X X 1 1 1 1 1 1 PIFVCO = F0 - 1.2 MHz.

1 X X X 0 X X X X 0 = Negative Modulation.

X X X 1 X X X X 1 = Positive Modulation.

1 X X 0 1 X X X X 0 = L Standard.

X X 1 1 X X X X 1 = L’ Standard.

1 X 0 X X X X X X 0 = AFC Active.

X 1 X X X X X X 1 = AFC Defeat (read register 02, d2 d1 d0 = 000).

1 0 X X X X X X X 0 = Over-modulation detection off.

1 X X X X X X X 1 = Over-modulation regulation active.

) - 6.3.3 PIF Features

t(s Reg.

Addr.

c (Hex)

Description

Data

Bits

d7 d6 d5 d4 d3 d2 d1 d0

Comments

rodu 02

CVBS Output Ampli- 5

tude

X X X 0 0 0 0 0 VTyp. - 1.6 dB.

X X X 1 0 0 0 0 VTyp. = 1.6 V (black / white).

X X X 1 1 1 1 1 VTyp.+ 1.5 dB.

Not to be used

1 XX0XXXXX

P Overmodulation

teReset

1 X 0 X X X X X X 0 = Normal Operating Mode

X 1 X X X X X X 1 = Overmodulation Reset

bsole CVBS Output

1 0 X X X X X X X 0 = 2 VPP, no external sound trap.

1 X X X X X X X 1 = 2.3 VPP, external sound trap.

47/86

Share Link: