The RPi packs some pretty good hardware and I'm sure it's actually possible to use it as a cheap replacement for the MX chip. With highly optimized ASM code that runs bare metal we could have the CPU handle the I/O and translate it to RGB on the fly then the GPU would do the scaling and HDMI output.
It should be much cheaper than an FPGA board since the Pi has all we need on this small board.
Any thoughts ?
Using a Raspberry Pi to process digital out
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Diminuendo
- Posts: 305
- Joined: Tue Sep 18, 2012 12:32 am
Re: Using a Raspberry Pi to process digital out
it wont be fast enough.
Re: Using a Raspberry Pi to process digital out
Hmm. Indeed the data stream to process is quite important (70MB/s for wide-screen 480p, assuming the component signal is 8bits per channel, even more for 576p). I/O seems to be the bottleneck here, because I'm pretty sure the CPU is capable of processing such data streams.
However since the pinout seems to indicate that it's a parallel bus that makes 70Mbps for each pin.
However since the pinout seems to indicate that it's a parallel bus that makes 70Mbps for each pin.