Audio/Video Switch for Dual SCART Connectors

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21

BIT

DESCRIPTION

7654

3210

COMMENTS

00

Low (< 2V), internal source (power-on default)

01

Medium (4.5V to 7V), external SCART source

with 16:9 aspect ratio

1

0

High impedance

Set TV Function Switching

11

High (> 9.5V), external SCART source with 4:3

aspect ratio

0

Normal operation, pulldown on TV_R/C_OUT

is off (power-on default)

TV_R/C_OUT Ground

1

Ground, pulldown on TV_R/C_OUT is on, the

output amplifier driving TV_R/C_OUT is turned

off

0

0

0V (power-on default)

0

1

Same level as ENC_FB_IN

1

0

Same level as VCR_FB_IN

Fast Blank (Fast Switching)

11

0

Composite video from the Y/C mixer is output

TV_Y/CVBS_OUT Switch

1

The TV_Y/CVBS_OUT signal selected in

register 06h is output (power-on default)

0

Composite video from the Y/C mixer is output

(power-on default)

RF_CVBS_OUT Switch

1

The TV_Y/CVBS_OUT signal selected in

register 06h is output

Table 8. Register 07h: TV Video Output Control

BIT

DESCRIPTION

765

43210

COMMENTS

VCR_Y/CVBS_OUT

VCR_R/C_OUT

000

ENC_Y/CVBS_IN

ENC_R/C_IN

001

ENC_Y_IN

ENC_C_IN

010

VCR_Y/CVBS_IN

VCR_R/C_IN

011

TV_Y/CVBS_IN

TV_R/C_IN

100

Not used

Not used

101

Mute

Mute

110

Mute

Mute

Input Sources for VCR

Video

111

Mute (power-on default)

Mute (power-on default)

0

DC restore clamp active at input (power-on default)

VCR_R/C_IN Clamp/Bias

1

Chrominance bias applied at input

0

DC restore clamp active at input (power-on default)

ENC_R/C_IN Clamp/Bias

1

Chrominance bias applied at input

Table 9. Register 08h: VCR Video Input Control