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CXA2040AQ

Description of Operation

1) Composite Video System I/Os

There are three systems of composite outputs. Each output switch can select the eight systems of CV1 to CV5

composite video inputs, CV6 and CV7 Y/C MIX (composite video) inputs and MUTE. All composite video

inputs are input from the input pins to each switch by DC coupling. CV6 is the composite video signal obtained

by inputting Y1 and C1 to an adder and adding Y1 and C1. CV7 is the composite video signal obtained by

inputting Y2 and C2 to an adder and adding Y2 and C2. The CV6 and CV7 composite video signals are input

from the input pins to each switch by DC coupling. When MUTE is selected, the internal bias DC output

respect to the input signal. The switch output stages are push-pull circuits which output at low impedance. The

The switch output stage is a push-pull circuit which outputs at low impedance. The switches are DC coupled

from input to output.

2) Y System I/Os

The YOUT switch can select the three systems of Y1, Y2 and MUTE. Y1 and Y2 are input from the input pins

a push-pull circuit which outputs at low impedance. The switch is DC coupled from input to output.

3) C System I/Os

The COUT switch can select the three systems of C1, C2 and MUTE. C1 and C2 are input from the input pins

a push-pull circuit which outputs at low impedance. The switch is DC coupled from input to output.