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Hello everyone.
I am new usage of Allwinner A20.
I read in Cortex-A7 specification, that it have DSP & SIMD extensions.
And if there are digital processing unit in processor, can i use it? Can i drop on it some code, as any other DSP? And if yes, will it work parallel with CPU?
Thanks,
Regards.
The support in the processor itself is terms additional instructions, rather than a discrete unit.
I'm not familiar with the A20, it's possible it also includes a discrete DSP.
Thanks for reply Martin Weidmann.
You said, that A20 includes a discrete DSP, did you mean CedarX?
If yes, I can't run on it any code, which I want. I can use CedarX for video decode/encode, but it's not solved my problem.
I need to filter input audio data, with specific algorithm, but CPU power not enough for it.
Hello,
Martin Weidmann. say that A20 does NOT include a discrete DSP BUT has several media instructions.
I am not sure whether a compiler can generate such instructions.
You can use them by an assembler.
Best regards,
Yasuhiko Koumoto.
As I said, I don't have experience of that specific SoC. But the NEON (Advanced SIMD) support in the processor could be used for things like audio processing. As Yasuhiko Koumoto said, you may need to implement the algorithim in assembler or intrinsics.
Thanks guys, for your advice.