STV0056A STMicroelectronics, STV0056A Datasheet - Page 20

• Manufacturer Part Number: STV0056A
• Description: Video ICs Analog Sound/Video
• Manufacturer: STMicroelectronics
• Type: Audio DSPr

Specifications of STV0056A

• Maximum Operating Temperature: + 70 C
• Package / Case: PDIP-56
• Minimum Operating Temperature: 0 C
• Mounting Style: Through Hole
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

STV0056A
CONTROL REGISTERS (continued)
Video Mux Truth Tables
Register 2 <0:2>
Register 3 <0:2>
Register 4 <0:2>
The truth table for the three scart outputs are the same.
Audio Mux Truth Tables
20/26
Bit<2>
Bit <7>
Bit <5>
Bit <7>
Bit <6>
Bit <5>
Bit <5>
0
0
0
0
1
1
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
X
X
0
1
0
1
0
1
0
1
Register 2/3/4
Register 4
Bit<1>
Register 2
Register 3
Register 0
Register 3
Register 4
0
0
1
1
0
0
1
1
Bit <6>
Bit <4>
Bit <6>
Bit <5>
Bit <4>
Bit <4>
Scart 1 video output control
Scart 2 video output control
Scart 3 decoder output control
X
X
0
0
1
1
0
0
1
1
0
0
1
1
0
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
Scart 3 return
Scart 2 return
Scart 1 return
Nothing selected
High Z or low power (default)
-150mV
0 (default)
+150mV
+300mV
A
C
B
A
C
B
B
A
B
A
B
C
A
B
A
C
B
-
-
-
Volume Output
Audio deemphasis (K2 switch O/P)
Scart 2 return
Scart 3 return
High Z or low power (default)
Audio Deemphasis
No deemphasis
J17
50 s
75 s (default)
ANRS I/O Select
Noise reduction OFF
Noise reduction ON (default)
I/P = PLL
I/P = Scart 3 return
Aux Audio Output
PLL output
Scart 3 return
Audio deemphasis (K2 switch O/P)
High Z or low power state (default)
Audio Decoder Output
PLL output
Audio deemphasis (K2 switch O/P)
Scart 2 return
High Z or low power state (default)
Switch K1/Audio Source Selection for Volume Output
Switch K5/Audio Source Selection for Scart 2
Switch K6/Audio Source Selection for Scart 3
Black Level Adjust on Scart 3
Switch K2/Audio Deemphasis
Video Output
Switch K3 & K4