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From: Moazzam on 14 Apr 2008 00:30
On Apr 13, 4:01 pm, kislo <kisl...(a)student.sdu.dk> wrote:
> On 13 Apr., 12:26, kislo <kisl...(a)student.sdu.dk> wrote:
>
>
>
>
>
> > On 13 Apr., 06:40, sky46...(a)trline4.org wrote:
>
> > > kislo <kisl...(a)student.sdu.dk> wrote:
> > > >On 12 Apr., 21:00, kislo <kisl...(a)student.sdu.dk> wrote:
> > > >> i got a problem with the Spartan 3E starter kit from Xilinx, no matter
> > > >> what Mode pins are set for, the DONE LED is always turned on when i
> > > >> power on the board. I cannot connect to the board via JTAG pin headers
> > > >> either. All the voltages are correct. What could be the problem ? any
> > > >> thing i can do to debug it ? i have another Spartan 3E board and it
> > > >> works fine.
> > > >the LED is on even though i hold PROG_B low
>
> > > Check shorts.
> > > Check power voltages.
> > > Check the schematics.
>
> > all checked
>
> when measured all the signals are grounded, including the unconnected
> jtag signals (which should be pulled high from internal pull ups) ..
> can the FPGA be damaged somehow ?- Hide quoted text -
>
> - Show quoted text -


Hi,
Did you try to read the device in JTAG chain ?
Or
Try put the FPGA in Master Serial Mode and check if it drives "CCLK"
pin to see if the device is alive !

I still think that the issue lies with some sort of short circuit on
board. Recheck the schemetics and
if possible, upload it some where. So that others could see those and
give their comment.

Hope this helps

/MH


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