STV6414A Datasheet, PDF (22/32 Pages) STMicroelectronics – Audio/video switch matrix

I²C bus selection
STV6414A
Table 22. RGB and fast blanking outputs
Reg add
(hex)
Description
Data
Bits
d7 d6 d5 d4 d3 d2 d1 d0
Comments
X X X X X X 0 0 FB forced to low level
Fast blanking control
2
X
X
X
X
X
X
X
X
X
X
X
X
0
1
1 FB forced to high level
0 FB from Encoder
X X X X X X 1 1 FB from VCR
RGB selection
X X X X 0 0 X X Muted
2
X
X
X
X
X
X
X
X
0
1
1
0
X
X
X RGB_ENC selected
X RGB_VCR selected
X X X X 1 1 X X Not allowed
03h
RGB gain
X X 0 0 X X X X +6 dB gain
2
X
X
X
X
0
1
1
0
X
X
X
X
X
X
X +5 dB gain
X +4 dB gain
X X 1 1 X X X X +3 dB gain
1
X
X
0
1
X
X
X
X
X
X
X
X
X
X
X
X
+0 dB extra gain
+3 dB for weak input
signals
RGB and FB control
1
0
1
XX
XX
X
X
X
X
X
X
X
X
X
RGB and FB outputs
high impedance state
X
RGB and FB outputs
active
Table 23. Miscellaneous control
Reg add
(hex)
Description
Data
Bits
d7 d6 d5 d4 d3 d2 d1 d0
Comments
R/C TV output
selection
1
X
X
X
X
X
X
X
X
X
X
0
0
0
0
0
1
Red signal selected
Chroma signal
selected
Not used
2 X X X X X X X X Not used
Grounded
XXX0 0 0 0X
C_VCR output control 2 X X X 0 1 0 0 X ^{Tri-state mode (high}
X X X 1 X 0 0 X ^impedance)
04h
Active
Low pass filters
control
1
X
X
X
X
0
1
X
X
X
X
0
0
0
0
X LPF enabled
X LPF disabled
Slow blanking mode
1
X0
X1
XXX
XXX
0
0
0
0
X
X
Normal mode
SLB TV is driven by
SLB VCR
IT enable
1
0
1
X
X
X
X
X
X
X
X
0
0
0
0
X No iterrupt flag
X IT enable
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