Thanks, that was a problem. TRST\ signal stayed high after programming my board causing not complete reset of the DSP. --- In motoroladsp@y..., Charlie W <charliewtx@y...> wrote: > I think your problem is that JTAG/OnCE is still in > debug mode after the code is downloaded into flash. > You must reset DSP and its on-chip JTAG/OnCE at same > time. The solution can be found in Motorola FAQ > database. The following Q&A was copied from Motorola > web site. I strongly recommend everyone who uses > Motorola products to use this database. > > http://e-www.motorola.com/cgi-bin/faq.cgi > > Question: > The 56F80x/56F82x DSP on my production board sometimes > fails to boot properly on power-up when I'm not > debugging. What could be wrong? > Answer: > The problem stems from the TSRT\ pin of the JTAG port. > (On power-on the JTAG port comes up in an unknown and > unpredictable state.) When you are debugging TRST\ is > controlled by Codewarrior. When not debugging it > should be tied low. One way to ground it is via a zero > ohm resistor. (Just remove the resistor for debug.) Or > to save cost just ground TRST\ pin through a trace. > (Then just cut the trace for debugging, otherwise > leave it alone.) On Motorola EVMs just jumper pins 2 > and 14 of the JTAG connector > > Charlie W > > --- ljube20022000 <ljube172@h...> wrote: > > My problem is that i can't reset the DSP after i > > download new code > > via JTAG port. Essentially I need to turn the power > > off and on in > > order for DSP to start executing the code. My reset > > signal stays low > > for about 200ms and i think that should be more than > > enough to reset > > DSP. Should i do something else after the code is > > loaded to DSP, is > > there any portion of memory that needs to be flushed > > before it starts > > executing? I would appreciate any information > > regarding this. > > > > > > __________________________________________________ > |