FPGA communication, I2C and DAC

I would like to use an FPGA for a motor control application. I have
worked with FPGAs before and am comfortable with what needs to be done
inside the FPGA, where I need some advice is how to interface the FPGA
with the outside world. At the end of the chain I need to generate an
analog command voltage (multiple channels actually). My initial idea
was to use a Cypress PSOC as the DAC and talk between the FPGA and PSOC
using the I2C protocol. I've used I2C between multiple PSOCs and have
had no problems, the question is how difficult it would be to implement
an I2C master in the FPGA (I'm looking at using an Altera Cyclone II).
Along those lines, I also would like to have communication between
multiple FPGA based motor controllers. Again, I was thinking I2C.

Does anyone see any major hangups or problems with this approach? Any
simpler implementation I am overlooking? What is the most common form
of digital communication used with an FPGA? How about interfacing to a
DAC?

Thanks
Jim

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Relevant Pages

  • FPGA communication, I2C and DAC
    ... I would like to use an FPGA for a motor control application. ... analog command voltage (multiple channels actually). ... was to use a Cypress PSOC as the DAC and talk between the FPGA and PSOC ...
    (comp.arch.fpga)
  • Re: FPGA communication, I2C and DAC
    ... inside the FPGA, where I need some advice is how to interface the FPGA ... analog command voltage (multiple channels actually). ... was to use a Cypress PSOC as the DAC and talk between the FPGA and PSOC ...
    (comp.arch.fpga)
  • Re: opamp clamp
    ... I need clean clipping, and can't overdrive some downstream mux's that ... Downstream, there's switchable lowpass filters, ... The fpga timestamps rs flipflop rising edges and also counts edges ... it automagically begins to average multiple periods. ...
    (sci.electronics.design)
  • Re: Intel core 2 quad - faster XMM?
    ... register using AH for some other purpose. ... ECC could get faster IMHO. ... Smarter though would be to have an FPGA in your system coupled to a low ... could plomp it into a multiple processor Opteron board and talk to it ...
    (sci.crypt)
  • Re: Sinewave generation
    ... MHz sine wave in an FPGA? ... I have only limited memory, ... If your target technology has some spare hardware multipliers, ... that's some exact multiple of your 16.758MHz sample rate, ...
    (comp.arch.fpga)