STV0042 데이터 시트보기 (PDF) - STMicroelectronics
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STV0042 Datasheet PDF : 24 Pages
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STV0042A
CONTROL REGISTERS (continued)
Video Mux Truth Tables
Register 2 <0:2> ⇒ Scart 1 video output control
Register 3 <0:2> ⇒ Scart 2 video output control
The truth table for the three scart outputs are the same.
Register 2/3
Bit<2>
0
0
0
0
1
1
1
1
Bit<1>
0
0
1
1
0
0
1
1
Bit<0>
0
1
0
1
0
1
0
1
Baseband video
De-emphasized video
Normal video
Not to be used
Scart 2 return
Not to be used
Nothing selected
High Z or low power (default)
Video Output
Audio Mux Truth Tables
Register 2
Bit <5>
0
1
0
1
Bit <4>
0
0
1
1
Bit <7>
0
1
0
1
Register 3
Bit <6>
0
0
1
1
Bit <6>
0
1
X
X
Register 0
Bit <5>
X
X
0
1
Switch K1/Audio Source Selection for Volume Output
Volume Output
A Audio deemphasis (K2 switch O/P)
C Scart 2 return
B Not to be used
- High Z or low power (default)
Switch K2/Audio Deemphasis
Audio Deemphasis
A No deemphasis
C Not to be used
B 50µs
B 75µs (default)
Switch K3 & K4
ANRS I/O Select
A Noise reduction OFF
B Noise reduction ON (default)
A Not to be used
B Not to be used
Bit <5>
0
1
0
1
Register 3
Bit <4>
0
0
1
1
Switch K5/Audio Source Selection for Scart 2
Aux Audio Output
C PLL output
A Not to be used
B Audio deemphasis (K2 switch O/P)
- High Z or low power state (default)
Register 2
Bit <7>
0
1
1
Bit <6>
0
0
1
Left / Right / Stereo on Volume Output
Mono left / channel 1
Mono right / channel 2
Stereo left & right (default)
19/24
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