First of all i would like to thank everyone who replied on my post.
The problem was that i used external WDT which prolong the /RESET
duration and caused downloading to fail. Also i had older version of
flash_over_jtag.exe ( new version is available at http://e-
www.motorola.com/cgi-bin/faq.cgi, search for FAQ number 19703.)and
newer version has -w option which will force the tool to wait until
DSP comes out of reset state. When i did this everything worked just
--- In motoroladsp@y..., Wim de Haan <w.d.haan@e...> wrote:
> Hello Ljubisa,
> I use flash_over_jtag.exe with Windows95.
> I experience the problem, that at power up of the EVM (also our own
> with parallelcom JTAG converter) the first time I run
> does not succeed, but the second time it succeed. To solve this
> use a batch file, which does this second attempt automatically (see
> batchfile). I hope this can help you. Maybe the problem is
dependant on your
> PC operating system? Which Windows version do you use?
> If you use an other DSP than 56F807, you must change the batch file
> accordingly and also use an other flash.cfg file as delivered with
> I had also the following problem:
> When I use DSP56F807EVM or parallelcom-JTAG-converter with their own
> delivered parallel cable, they work ok.
> However, when I use the parallel cable of the DSP56F805EVM (its
> brother), this cable works with DSP56F805EVM, but does NOT work with
> DSP56F807EVM nor with parallelcom-JTAG-converter. When I measured
> difference between those cables with an Ohm-meter, I found no
> I suppose that the difference can be found in cable shield or
> did not investigate it in more detail, but used the original cables
> with their own boards.
> Kind regards,
> Wim de Haan > Exendis B.V.
> W.J. de Haan
> P.O.box 56, 6710 BB Ede
> Keesomstraat 4, 6716 AB Ede
> The Netherlands.
> Tel: +31-(0)318 - 676305
> URL: http://www.exendis.com <http://www.exendis.com >
> -----Original Message-----
> From: ljube20022000 [mailto:ljube172@h...]
> Sent: maandag 25 november 2002 21:15
> To: motoroladsp@y...
> Subject: [motoroladsp] Re: Flash over Jtag > I am downloading my code using EVM parallel JTAG command converter.
> I lifted DSP chip from EVM and then i just jumped over the JTAG
> header on EVM and my board and this works fine when i am
> code via code warrior tools(using DSP56800->load default target).
> The problem is when i use flash_over_jtag command line. Also i am
> using external MUX6316 WDT and TRST\ signal is connected to ground
> via 1k resistor.
> --- In motoroladsp@y..., "Art Johnson" <art@p...> wrote:
> > Hi Ljubisa,
> > I have used the flash_over_jtag.exe file to download programs to
> our 807-based systems, and it works OK for us here. Perhaps your
> problem is with the connection between the JTAG header connector
> the DSP chip. Here are the required connections:
> > JTAG pin DSP pin
> > 1 <-------> TDI/TCI
> > 2 <-------> Ground
> > 3 <-------> TDO
> > 4 <-------> Ground
> > 5 <-------> TCK
> > 6 <-------> Ground
> > 7 (no connection)
> > 8 (no pin)
> > 9 <-------> /RESET
> > 10 <-------> TMS
> > 11 <-------> +3V3
> > 12 (no connection)
> > 13 (no connection)
> > 14 <-------> /TRST
> > In our production boards, we use an external WatchDog Timer (WDT)
> chip, the MAX6320PUK29CY-T (PDF file was attached to my
> [motoroladsp] 56F807 expected life cycle", sent on Thursday
> 5, 2002 at 7:46am). Note that both /RESET and /TRST must be
> for a proper power-on reset. /RESET is asserted either directly
> the WDT chip or indirectly using an AND gate. /TRST can be either
> tied to ground through a 1.0 kohm resistor, or it can also get the
> WDT reset signal through another AND gate. We do NOT tie /TRST
> directly to ground, because this would force us to damage the board
> by cutting a trace whenever we wanted to do some debugging using
> JTAG/OnCE port.
> > I hope this information helps to solve your problem.
> > Regards,
> > Art Johnson
> > Senior Systems Analyst
> > PMC Prime Mover Controls Inc.
> > 3600 Gilmore Way
> > Burnaby, B.C., Canada
> > V5G 4R8
> > Phone: 604 433-4644
> > FAX: 604 433-5570
> > Email: art@p...
> > http://www.pmc-controls.com <http://www.pmc-controls.com>
> > -----Original Message-----
> > From: ljube20022000 [mailto:ljube172@h...]
> > Sent: Monday, November 25, 2002 10:39 AM
> > To: motoroladsp@y...
> > Subject: Flash over Jtag
> > Hi everybody,
> > I am wondering if anyone used flash_over_jtag.exe file that came
> > SDK. I am getting following error message when i run this file:
> > DSP56F800 Flash loader - application start
> > version Gamma 0.2
> > (c) Motorola 2001 - 2002, MCSL
> > 5 flash blocks defined in the config file.
> > Using printer port at address 0x378.
> > JTAG IR path length: 4
> > JTAG DR path length: 1 (BYPASS)
> > IDCode status: 0x9
> > Jtag ID: 0x1f2701d
> > Debug Request status: 0x9
> > Enable OnCE status: 0x9, polls left: 10
> > Enable OnCE status: 0x9, polls left: 9
> > Enable OnCE status: 0x9, polls left: 8
> > Enable OnCE status: 0x9, polls left: 7
> > Enable OnCE status: 0x9, polls left: 6
> > Enable OnCE status: 0x9, polls left: 5
> > Enable OnCE status: 0x9, polls left: 4
> > Enable OnCE status: 0x9, polls left: 3
> > Enable OnCE status: 0x9, polls left: 2
> > Enable OnCE status: 0x9, polls left: 1
> > Enable OnCE status: 0x9, polls left: 0
> > Target chip refused to enter Debug mode!
> > How can i force DSP to enter Debug mode.
> > Thanks,
> > Ljubisa >
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