STV6412ADT 查看數據表（PDF） - STMicroelectronics

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STV6412ADT

Audio/video switch matrix

STMicroelectronics 

I2C bus selection

STV6412A

Table 15.

Reg.

addr

(hex)

Audio selection & VCR audio output

Description

Data

Bits

d7 d6 d5 d4 d3 d2 d1 d0

Comments

TV & CINCH audio

output selection

3 X X X X X 0 0 0 Muted

X X X X X 0 0 1 Encoder L/R selected

X X X X X 0 1 0 VCR L/R selected

X X X X X 0 1 1 AUX L/R selected

X X X X X 1 0 0 TV L/R selected

X X X X X 1 0 1 Not allowed

X X X X X 1 1 0 Not allowed

X X X X X 1 1 1 Not allowed

01

CINCH audio gain

1 X X X X 0 X X X 0 dB

X X X X 1 X X X Follow TV gain

2 X X 0 0 X X X X Muted

VCR audio output selection

uct(s) VCR stereo or mono mode 1

X X 0 1 X X X X Encoder L/R selected

X X 1 0 X X X X TV L/R selected

X X 1 1 X X X X AUX L/R selected

0 X X X X X X X 0 = stereo

1 X X X X X X X 1 = mono

rod Table 16. TV & VCR video selection

P Reg.

te addr

le (hex)

Description

- Obso TV video output selection

duct(s) TV Chroma output control

ro 02

Obsolete P VCR video output selection

Data

Bits

d7 d6 d5 d4 d3 d2 d1 d0

Comments

3 X X X X X 0 0 0 Y/CVBS muted & Chroma muted

X X X X X 0 0 1 Y/CVBS_ENC & R/C_ENC

X X X X X 0 1 0 Y_ENC & C_ENC

X X X X X 0 1 1 Y/CVBS_VCR & R/C_VCR

X X X X X 1 0 0 CVBS_AUX & Chroma muted

X X X X X 1 0 1 Not allowed

X X X X X 1 1 0 Not allowed

X X X X X 1 1 1 Not allowed

1 X X X X 0 X X X Chroma defined by d2d1d0

X X X X 1 X X X Chroma force to mute

3 X 0 0 0 X X X X Y/CVBS muted & Chroma muted

X 0 0 1 X X X X Y/CVBS_ENC & R/C_ENC

X 0 1 0 X X X X Y_ENC & C_ENC

X 0 1 1 X X X X CVBS_TV & Chroma muted

X 1 0 0 X X X X CVBS_AUX & Chroma muted

X 1 0 1 X X X X Not allowed

X 1 1 0 X X X X Not allowed

X 1 1 1 X X X X Not allowed

VCR Chroma output control

1 0 X X X X X X X Chroma defined by d6d5d4

1 X X X X X X X Chroma force to mute

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Doc ID 9754 Rev 2

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