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Repair & Schematics
Neo Geo AES

CXA Video Encoder (Neo Geo AES)

2min

The video encoding for generating composite and RGB video data from the LSPC chip is the CXA1145 video encoder.

The CXA1145 is a super common encoder found on many retro consoles.

CXA1145 Schematic
CXA1145 Schematic
īģŋ

Look for it near the AV port on your Neo Geo, and here are the pinouts.

Document image
īģŋ
AV Pinout
AV Pinout
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RGB Amplification

The CXA1145 slightly amplifies the input RGB signals by around 40%. As an example, a blue in signal pulsing at 0.66V will output at 0.93V.

Updated 01 Oct 2023
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