STV6412A(2003) 데이터 시트보기 (PDF) - STMicroelectronics

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STV6412A
(Rev.:2003)

AUDIO/VIDEO SWITCH MATRIX

STMicroelectronics 

STV6412A

Table 16. TV & VCR Video Selection

Reg.

Addr

(Hex)

Description

Data

Bits

d7 d6 d5 d4 d3 d2 d1 d0

Comments

TV Video Output Selection

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

TV Chroma Output Control 1

02

3

VCR Video Output Selection

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

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

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

Table 17. RGB & Fast Blanking Outputs

Reg.

Addr

(Hex)

Description

Data

Bits

d7 d6 d5 d4 d3 d2 d1 d0

Comments

Fast Blanking Control

2 X X X X X X 0 0 FB forced to low level

X X X X X X 0 1 FB forced to high level

X X X X X X 1 0 FB from Encoder

X X X X X X 1 1 FB from VCR

RGB Selection

2 X X X X 0 0 X X Muted

X X X X 0 1 X X RGB_ENC selected

X X X X 1 0 X X RGB_VCR selected

X X X X 1 1 X X Not allowed

03 RGB Gain

2 X X 0 0 X X X X +6 dB gain

X X 0 1 X X X X +5 dB gain

X X 1 0 X X X X +4 dB gain

X X 1 1 X X X X +3 dB gain

1 X 0 X X X X X X +0 dB extra gain

X 1 X X X X X X +3 dB for weak input signals

RGB and Fast Blanking

Control

1 0 X X X X X X X RGB and FB outputs high imped-

ance state

1 X X X X X X X RGB and FB outputs active

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