Digital OSD line protocol for RGB mod?

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CharlesMoyes
Posts: 12
Joined: Fri Jun 05, 2020 7:07 am

Digital OSD line protocol for RGB mod?

Post by CharlesMoyes »

Is there any documentation on the protocol? If not, has anyone taken a stab at hooking a scope / logic analyzer up to it and reverse engineering it?

I'm hoping to design an ADC board to feed in analog RGB signals into digital-only jungle chips like the CXA1870S

Should be possible to use a microcontroller with ADC lines and the right clock signal for this.
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maxtherabbit
Posts: 1763
Joined: Mon Mar 05, 2018 4:03 pm

Re: Digital OSD line protocol for RGB mod?

Post by maxtherabbit »

CharlesMoyes wrote:Is there any documentation on the protocol? If not, has anyone taken a stab at hooking a scope / logic analyzer up to it and reverse engineering it?

I'm hoping to design an ADC board to feed in analog RGB signals into digital-only jungle chips like the CXA1870S

Should be possible to use a microcontroller with ADC lines and the right clock signal for this.
I don't think you understand what "digital RGB" means in this context. It's not some kind of serialized communication protocol, it's simply 3 bit TTL digital RGB. Only 8 colors can be represented - red, green, blue, magenta, cyan, yellow, black, white
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