LPC devices are based on ARM7TDMI-S and your JTAG frequency should be < 1/7 of clock speed for "-S" devices. I'd recommend you start at the lowest JTAG setting and work up. Hugh @ www.ashling.com/support/lpc2000/ -----Original Message----- From: theeuwke [mailto:theeuwke@...] Sent: 03 November 2004 16:01 To: lpc2000@yahoogroups.com Subject: [lpc2000] Re: Ashling EVBA 2194 and Multi-ICE Ok, I parral soldert a resistor of 1k on it, so it's a little bit less than 1k now, but still no luck, i am suspecting my settings of the majic: - ARM7TDMI (LPC2106) - Little Endian - Starup Connection mode: Intrusive (reset and stop processor) - Sense target on VREF - JTAG Clock speed = 10 (CPU runs at 14,476mhz) - Target Reset causes JTAG RESET = "unchecked" - Reset Target using Reset output signal = unchecked - Drive TRST* Signal = unchecked --- In lpc2000@yahoogroups.com, "Hugh O'Keeffe" <hugh.okeeffe@a...> wrote: > I want to confirm that there is a potential problem with our EVBA7 board > that may prevent operation with the ARM Multi-ICE. > > The problem is due to the rise-time of RST line which enables the > EmbeddedICE on the LPC2000 device. Due to the use of an incorrect resistor > value on our EVBA7 board the EmbeddedICE interface may not be enabled when > working with Multi-ICE (Ashling tools have an internal pull-up, hence, do > not have this problem). > > The fix is to replace R39 on the EVBA7 board (10K) with a 1K resistor. > > > > > Hugh @ <http://www.ashling.com/support/lpc2000/> > http://www.ashling.com/support/lpc2000/ > > > > > -----Original Message----- > From: David [mailto:daver@c...] > Sent: 12 August 2004 21:27 > To: lpc2000@yahoogroups.com > Subject: [lpc2000] Re: Ashling EVBA 2194 and Multi-ICE > > > --- In lpc2000@yahoogroups.com, Pauric Doherty <pauric_doherty@y...> > wrote: > > All, > > > > Has anybody got the ARM Multi-ICE unit and ARM Multi-ICE Server version > > 2.2.5 to connect to an Ashling EVBA7 evaluation board with an > adaptor board > > FA-EVBA7-64 and LPC2194 chip. > > > > I've posted this message before and have found out that it is possible > > (thanks Milos) but I would like to know if anyone has actually got > the above > > situation to work. I've read all the documentation regarding jumper > settings > > and Multi-ICE debugging but have still to figure out what I'm doing > wrong. > > > > Thanks in advance for any help > > It really is appreciated > > > > Regards, > > Pauric > > We have the same evaluation board with the 2294 processor. > > We attempted to use the Wiggler to debug the board but > to no avail. After many waveforms and looking at the > schematics, we determined that the RST line was rising > more slowly than TRST. This meant that the TRST line was > trying to reset the JTAG state machine when the processor > was still in reset. > > Our solution was to put a 1K resister in parallel to RST. > The resister on the board R39 (10K) could also be replaced > but we didn't want to solder the board. > > The people at Macraigor were VERY helpful in helping us > narrow down the problem. Thanks to Macraigor! > > Regards, > Dave > > > > > > Yahoo! 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Message
RE: [lpc2000] Re: Ashling EVBA 2194 and Multi-ICE
2004-11-03 by Hugh O'Keeffe