Forums

problem

Started by mohsin khan August 31, 2007
iam using a custom made board with a C6418 DSP and I have configured the
boot lines correctly, selected the EMIF clk/6 and pulled the other pins high
for 8 bit boot mode, and when I bring the chip out of reset I don't see any
activity on the CE1 memory select which has to enable the flash for the EDMA
to copy the first 1k from it.

The DSP works fine with the emulator though. Any ideas on what could be
wrong?
Mohsin-

> iam using a custom made board with a C6418 DSP and I have configured the
> boot lines correctly, selected the EMIF clk/6 and pulled the other pins high
> for 8 bit boot mode, and when I bring the chip out of reset I don't see any
> activity on the CE1 memory select which has to enable the flash for the EDMA
> to copy the first 1k from it.
>
> The DSP works fine with the emulator though. Any ideas on what could be
> wrong?

Does your design use SDRAM and what is your source of EMIF clock?

-Jeff
Mohsin,
--- Jeff Brower wrote:

> Mohsin-
>
> > iam using a custom made board with a C6418 DSP
> and I have configured the
> > boot lines correctly, selected the EMIF clk/6 and
> pulled the other pins high
> > for 8 bit boot mode, and when I bring the chip out
> of reset I don't see any
> > activity on the CE1 memory select which has to
> enable the flash for the EDMA
> > to copy the first 1k from it.
> >
> > The DSP works fine with the emulator though. Any
> ideas on what could be
> > wrong?
>
> Does your design use SDRAM and what is your source
> of EMIF clock?
A few things to verify:
1. Does CCS come up??
2. If yes, can you see the memory contents of your
boot device from CCS??
3. If no, verify that you can run 'xdsprobe.exe' with
the '-i' option. Check the IR length for 38 bits - if
everything works but the length is not 38, both of
your EMU pins on the JTAG connector are not pulled
high.
4. If every thing above looks good, [including the
emif clock], double check your boot mode.

mikedunn
>
> -Jeff
Thanks a lot guys. The problem was that I had pulled the EMU pins high with pull-up resistors!!

iam using a custom made board with a C6418 DSP and I have configured the
>boot lines correctly, selected the EMIF clk/6 and pulled the other pins high
>for 8 bit boot mode, and when I bring the chip out of reset I don't see any
>activity on the CE1 memory select which has to enable the flash for the EDMA
>to copy the first 1k from it.
>
>The DSP works fine with the emulator though. Any ideas on what could be
>wrong?