CD-ANA-2 board



The CD-ANA-2 board is the audio, video and power board for the front-loading NeoGeo CD. It was later modified and named NEO-CDA in top-loading systems.

=Audio part=

CN5 provides digital and analog audio from. CN10 provides I2S digital audio from the CD drive.

MONO goes to the video encoder for amplification and output to the DIN connector.



=ON button part=

The circuit is a fairly complex toggle switch with power-on reset and debouncing.

POWER is constantly at 5V when the power plug is connected.

VCC goes to 5V when STARTUP goes low.