LPC2214 with 8237 (DMA)

Started by yodathgreat November 4, 2005
Hi all,

I want connect a 8237 (a DMA controller) to my LPC2214.
(My 8237 is a VHDL IP on ACTEL FPGA)

Who can help me ?

best regards
Yodathegreat


An Engineer's Guide to the LPC2100 Series

--- In lpc2000@lpc2..., "yodathgreat" <christophe.darnet@l...>
wrote:
> I want connect a 8237 (a DMA controller) to my LPC2214.
> (My 8237 is a VHDL IP on ACTEL FPGA)

DMA requires that your external DMA controller can take control over
the address/data bus, do its transactions, and give control back to the
CPU. The LPC2214 EMC doesn't support that.

Karl Olsen


Hi,

I know, but my "shared" SRAM is in FPGA...
In my FPGA I have make a Double port SRAM..
--- In lpc2000@lpc2..., "Karl Olsen" <kro@p...> wrote:
>
> --- In lpc2000@lpc2..., "yodathgreat" <christophe.darnet@l...>
> wrote:
> > I want connect a 8237 (a DMA controller) to my LPC2214.
> > (My 8237 is a VHDL IP on ACTEL FPGA)
>
> DMA requires that your external DMA controller can take control over
> the address/data bus, do its transactions, and give control back to the
> CPU. The LPC2214 EMC doesn't support that.
>
> Karl Olsen
>