DMA controller with external DREQ/DACK mechanism for legacy ASIC

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zaghc_4105406
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Hello everyone,

I'm working on a project that involves a legacy ASIC that requires an external DMA controller with full DREQ/DACK mechanism. Unfortunately, non of the microcontrollers available today provide that type of DMA. Well, I'm talking here about a fully fledged DMA controller similar in signaling and behavior to that of Intel's 8237. Bitbanging, playing with address bits/signals of FMC or any workaround is not acceptable for me.

Recently, I got some suggestions to implement it using a CPLD or FPGA, but I've never used one in any of my designs. Someone also referred me to PSoC series, but not sure whether I can achieve what I want using the Logic Array embedded in that SoC.

Any feedback is highly appreciated!

Zaher

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zaghc_4105406
Level 1
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First solution authored First reply posted First question asked

@odissey1 Thank you very much for your reply. Yes, I totally agree with you!

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