STV0042 데이터 시트보기 (PDF) - STMicroelectronics

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STV0042

SATELLITE SOUND AND VIDEO PROCESSORS

STMicroelectronics 

CONTROL REGISTERS (continued)

Reg 2 write only

Bit (default F7HEX)

0 H Select video source for scart 1 O/P

1 H Select video source for scart 1 O/P

2 H Select video source for scart 1 O/P

3 L Select 4.000MHz or 8.000MHz clock speed (L = 8MHz)

4 H Select audio source for volume output (Switch K1)

5 H Select audio source for volume output (Switch K1)

6 H Select Left/Right/Stereo for volume output

7 H Select Left/Right/Stereo for volume output

Reg 3 write only

Bit (default F7HEX)

0 H Select video source for scart 2 O/P

1 H Select video source for scart 2 O/P

2 H Select video source for scart 2 O/P

3 L Video deemphais 2 / 22kHz (H : 22kHz)

4 H Select audio source for Scart 2 output (Switch K5)

5 H Select audio source for Scart 2 output (Switch K5)

6 H Audio deemphasis select (Switch K2)

7 H Audio deemphasis select (Switch K2)

Reg 4 write only

Bit (default BFHEX)

0 H Not to be used

1 H Not to be used

2 H Not to be used

3 H Stand-by or low power mode (H = low power)

4 H Not to be used

5 H Not to be used

6 L Not to be used

7 H Not to be used

Reg 5 write only

Bit (default B5HEX)

0 H FM deviation selection -- default value for 50kHz modulation

1 L FM deviation selection

2 H FM deviation selection

3 L FM deviation selection

4 H FM deviation selection

5 H FM deviation selection (L = double the FM deviation)

6 L Not to be used

7 H Not to be used

Reg 6 write/read

Bit (default 86HEX)

0 L Status of I/O

1 H Select data direction of I/O 1 ( H = output)

2 H Select frequency synthesizer 1 OFF/ON (L = OFF)

3 L Select frequency synthesizer 2 OFF/ON (L = OFF)

4 L Select RF source (L = OFF) to FM det 1

5 L Select RF source (L = OFF) to FM det 2

6 L Select frequency for PLL synthesizer - LSB (bit 0) of 10-bit value

7 H Select frequency for PLL synthesizer - bit 1 of 10-bit value

STV0042A

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