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

6.3.4 Tuner Delay

Reg.

Addr.

(Hex)

Description

Data

Bits

d7 d6 d5 d4 d3 d2 d1 d0

Comments

03

Tuner AGC Starting

Point Adjustment

6

X X 0 0 0 0 0 0 Min. Start point 2 mVRMS at PIF input.

X X 1 0 0 0 0 0 Typ. Start point 12 mVRMS at PIF input.

X X 1 1 1 1 1 1 Max. Start point 80 mVRMS at PIF input

2 0 0 X X X X X X 50 µA/dB.

Tuner AGC Gain

0 1 X X X X X X 95 µA/dB.

1 0 X X X X X X 170 µA/dB.

1 1 X X X X X X 270 µA/dB.

6.3.5 SIF Features and Audio Switches

Reg.

Addr

(Hex)

Description

Data

Bits

d7 d6 d5 d4 d3 d2 d1 d0

Comments

t(s) 04

2 X X X X X X 0 0 FM/AM audio selected.

Main Audio Output

X X X X X X 0 1 External audio selected.

c X X X X X X 1 X MUTE selected.

u FM De-emphasis 2

d Switch and FM de-

X X X X 0 0 X X Automatic control, according to sound standard.

X X X X 0 1 X X De-emphasis at 75 µs and FM deviation at ±25 kHz.

X X X X 1 0 X X De-emphasis at 50 µs and FM deviation at ±50 kHz.

ro viation range con-

P trol

X X X X 1 1 X X Audio FM Wide mode &50 µs De-emphasis (BGDKI).

To be used with 224xH version only in QSS architec-

ture.

te FM Demodulator

defeat

1 X X X 0 X X X X 0 = FM Demodulator active.

X X X 1 X X X X 1 = FM Demodulator defeat, FM out muted.

le AM/FM output se- 1 X X 0 X X X X X 0 = FM output selected.

o lection

X X 1 X X X X X 1 = AM output selected and FM demod OFF.

s QSS and AM de-

b modulator defeat

1

X 0 X X X X X X 0 = QSS and AM demod active,

X 1 X X X X X X 1 = QSS and AM demod not active (OFF)

Intercarrier filter

O ON/OFF

1

0 X X X X X X X 0 = Intercarrier filter ON

1 X X X X X X X 1 = Intercarrier filter OFF

- 05 Volume Control

) Attenuation,

t(s Linear curve (dB)

7 0 0 0 0 0 0 0 0 Attenuation = 0 dB.

0 1 1 1 1 1 1 1 Attenuation = 78 dB.

7-bit resolution.

Volume Control

c Attenuation,

u Non-linear curve

bsolete Prod (d0 = 0, d7 = 1)

6 1 0 0 0 0 0 0 0 Attenuation = 0 dB.

1 1 1 1 1 1 1 0 Attenuation = 78 dB.

6-bit resolution.

48/86

Share Link: