DSOCM BRAM I/F Controller
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DSOCM BRAM I/F Controller

 
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Voxer
Guest
Posted: Tue Dec 21, 2004 7:57 pm    Post subject: DSOCM BRAM I/F Controller Reply with quote
I have read the literature on the the Xilinx DSOCM IF Controller but have a
question.

Does this piece of IP need to be connected to the DCR Bus in order to get at
the DCR
registers - currently in my EDK graphic I only have it attached to the BRAM
it controls
and straight into the PPC.

If not how do I access the DCR regs for this IP - I have tried mfdcr and
mtdcr before
from within my software but cannnot compile as there appears to be no ".obj"
for
them.

AM I being daft ?
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Andi
Guest
Posted: Tue Dec 21, 2004 8:32 pm    Post subject: Re: DSOCM BRAM I/F Controller Reply with quote
You can connect the on port of the BRAM to the DSOCM interface of the ppc. That enables you to direcly read and write to the BRAM on one port. On the other port you can connect the BRAM to any other stuff µC or VHDL-process. I did not use the DCR registers. What do you plan to do with them?
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Voxer
Guest
Posted: Wed Dec 22, 2004 7:59 am    Post subject: Re: DSOCM BRAM I/F Controller Reply with quote
I'm not really sure what I want to do with them - if anything.

However, if I do need to use them what do I do ??

I see that the DSCNTL register can be used to set up clock ratios when the
PPC
and BRAM are being clocked at different speeds. If I need to do this how
will I
set this reg up if I cant see it ???


"Andi" <00andi@web.de> wrote in message news:ee8ac21.0@webx.sUN8CHnE...
Quote:
You can connect the on port of the BRAM to the DSOCM interface of the ppc.
That enables you to direcly read and write to the BRAM on one port. On the

other port you can connect the BRAM to any other stuff µC or VHDL-process. I
did not use the DCR registers. What do you plan to do with them?
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Peter Ryser
Guest
Posted: Thu Dec 23, 2004 7:25 am    Post subject: Re: DSOCM BRAM I/F Controller Reply with quote
Include xpseudo_asm.h into your C source code to make mfdcr() and
mtdcr() available.

- Peter


Voxer wrote:
Quote:
I have read the literature on the the Xilinx DSOCM IF Controller but have a
question.

Does this piece of IP need to be connected to the DCR Bus in order to get at
the DCR
registers - currently in my EDK graphic I only have it attached to the BRAM
it controls
and straight into the PPC.

If not how do I access the DCR regs for this IP - I have tried mfdcr and
mtdcr before
from within my software but cannnot compile as there appears to be no ".obj"
for
them.

AM I being daft ?

Back to top
 
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