STV6412A データシートの表示（PDF） - STMicroelectronics

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STV6412A

Audio/video switch matrix

STMicroelectronics 

STV6412A

I2C bus selection

Table 13. Input signal summary (write mode) (continued)

Reg

addr

(hex)

d7

d6

d5

Data

d4

d3

d2

d1

d0

Video

02

VCR

Chroma

muted

VCR video and Chroma switch control

TV Chroma

muted

TV video and Chroma switch control

03

RGB and FB

tri-state

RGB gain

RGB switch control

Fast blanking

mode/input selection

Miscellaneous

04

IT enable

SLB mode

Not used

(see

Note 1)

VCR-C VCR-C gate RF trap RF adder

output control control filter control control

TV R or C

output

selection

05

VCR slow blanking

t(s) STB-BY

duc 06

RF

outputs

TV

outputs

TV slow blanking

CINCH

outputs

VCR

outputs

ENC audio Input gain VCR R/C ENC R/C

0/6/9 dB

sub clamp sub clamp

AUX

inputs

TV

inputs

VCR

inputs

ENC

inputs

ro Note: 1 Unused data must be set to “0”.

te P Table 14.

le Reg.

o addr

bs (hex)

TV audio output

Description

- O Soft volume change

t(s) Level adjustment

c 00

u 6 dB extra gain

Obsolete Prod TV stereo or mono mode

Data

Bits

d7 d6 d5 d4 d3 d2 d1 d0

Comments

1 X X X X X X X 0 Active

X X X X X X X 1 Disabled

5 X X 0 0 0 0 0 X 0 dB

X X 1 1 1 1 1 X -62 dB (-2 dB/step)

1 X 0 X X X X X X 0 dB

X 1 X X X X X X +6 dB

1 0 X X X X X X X 0 = stereo

1 X X X X X X X 1 = mono

Doc ID 9754 Rev 2

17/31

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