AVPro

Triple SCART A/V Switch

9

NAME

TYPE

DESCRIPTION

TV_Mod

O

TV Modulator Video Output: This pin follows the composite video output to the

TV_YCout signal to the TV SCART connector. It provides composite video for an

external RF modulator. In S video mode, it provides luminance information only

TV_R

O

TV Red Output: This pin provides Red video output to the TV SCART connector

(pin 15). In S video mode, this pin provides the chroma information.

TV_C

O

TV Chroma Output:

This pin provides chroma signal to sum with TV_Mod’s

luminance when operating in S video mode for composite video signal for RF

modulator. It is on/off selectable.

TV_G

O

TV Green Output:

This pin provides Green video output to the TV SCART

connector (pin 11).

TV_B

O

TV Blue Output: This pin provides Blue video output to the TV SCART connector

(pin 7).

TV_Lout

O

TV Left Audio Output: This pin is the output to the left channel audio (pin 3) of the

TV SCART connector.

TV_Rout

O

TV Right Audio Output: This pin is the output to the right channel audio (pin1) of

the TV SCART connector.

TV_Fnc

O

Function Output TV: This pin is the function switching output to the TV SCART

connector pin 8. The output level is determined by the serial port write register.

VCR_YCout

O

VCR Video Output: This pin is the composite video output to the VCR SCART

connector (pin 20). In the SVHS mode, this pin provides luminance information

from the video encoder IC (pin Enc_Y).

VCR_Lout

O

VCR Left Audio Output: This pin is the output to the left channel audio (pin 3) of

the VCR SCART connector.

VCR_Rout

O

VCR Right Audio Output: This pin is the output to the right channel audio (pin1) of

the VCR SCART connector.

Digital Pins:

DO_0

O

Digital Output 0: This pin is a general purpose output that is controlled by serial

port register.

DO_1

O

Digital Output 1: This pin is a general purpose output that is controlled by serial

port register.

SCLK

I

Serial Clock Input: This pin accepts a serial port clock input signal.

SDATA

I

Serial Data Input: This is a tri-state pin that receives or transmits serial data.

Power/Ground Pins:

VCC

-

+5 VDC power inputs.

VEE

-

-5 VDC power inputs.

VDD

-

+12 VDC power input for function switching

Vref

-

Internal voltage reference, bypass pin. Add capacitor 4.7 uF to ground.

GND

-

Ground for all blocks.

Rbias

-

Bias point of internal current generator. Add resistor 10k to ground.

Tgen

-

Reference point for internal timing circuit. Add capacitor 470 pF to ground.