VGA to AHD solution description

The basic specifications of this program are as follows:

Input signal support:

VGA: 800x600 1024x768

1152x864 1280x600 1280x720 1280x768 1280x800 1280x960 1280x1024 1360x768 1366x768 1400x1050 1440x900 1600x900 1680x1050 1920x1080

Output signal support:

AHD: 1280x720P 60Hz 1920x1080P 30Hz

Connector function definition: (subject to the latest PCB document of Chipav)

P4: Power input 5V

P7: VGA input

J2: Audio input

LED2: Power indicator

P3: AHD input

SW1: Switch output resolution

J3: Audio output

Instructions:

Before the PCB solution board is powered on, first connect to the P7 port through the VGA cable, and connect to the P3/J2/J3 according to your needs.

Finally, plug in a 5V power supply, and the board can light up and work.

The output resolution can be switched through SW1 during operation.

Chipav provides sets of films:

This solution consists of six main chips, and the process is as follows:

CV8786: VGA signal input, converted to HDMI signal output.

Sil9293: Decode HDMI signal and convert it to YUV422 output.

CV2880: Scale the resolution mode lower than 720P to 720P/1080P for output.

NVP6021: Encode the zoomed digital signal into AHD signal for output.

N76E003: A system for controlling the VGA to HDMI part.

STM8S005K6: The system that controls the HDMI to AHD part.

If you need HDMI to AHD customers, you can remove the VGA to HDMI part of the system to complete HDMI to AHD.