TDA7340G 查看數據表（PDF） - STMicroelectronics

零件编号

产品描述 (功能)

比赛名单

TDA7340G

AUDIO SIGNAL PROCESSOR

STMicroelectronics 

TDA7340G

SPEAKER ATTENUATORS

MSB

LSB SPEAKER ATTENUATORS LF, LR, RF, RR

D7 D6 D5 D4 D3 D2 D1 D0

-1.25dB STEPS

0

0

0 0dB

0

0

1 -1.25dB

0

1

0 -2.5dB

0

1

1 -3.75dB

1

0

0 -5dB

1

0

1 -6.25dB

1

1

0 -7.5dB

1

1

1 -8.75dB

10dB STEPS

0

0

0dB

0

1

-10dB

1

0

-20dB

1

1

-30dB

1

1

1

1

1 Speaker Mute

For example an attenuationof 25dB on a selected output is given by: 11110100

Note:

If the speaker attenuator bytes the three MSBs are used for additional Noise blanker Roll off programming

STEREO DECODER

MSB

LSB

D7 D6 D5 D4 D3 D2 D1 D0

FUNCTION

0

0 11dB Input Gain

0

1 8.5dB Input Gain

1

0 6dB Input Gain

1

1 3.5dB Input Gain

0

Stereo Decoder Muted

1

Stereo Decoder Off

1

Forced Mono

0

0

Noise Blanker Threshold 1 NBT 35mV

0

1

Noise Blanker Threshold 2 NBT 45mV

1

0

Noise Blanker Threshold 3 NBT 55mV

1

1

Noise Blanker Threshold 4 NBT 65mV

0

Pilot Threshold High (Pth = 0)

1

Pilot Threshold Low (Pth = 1)

For example pilot threshold low, noise blanker threshold 3 (NTB = 10), Stereo decoder ON, 6dB input

gain is given by: 11000010.

13/27

Share Link: