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Hello,
I would like to build a prototype power supply for my
project, and since I don't have real data about its power
consumption, I need some estimations. Could you
please tell me (basing on your experience and previous
designs) how much current does a Cyclone 1C6 running
at 180 MHz need? I know that this heavily depends on
the design, but I just need an overestimated approximation.
Remaining parameters: V_core = 1.5V, V_io = 3.3V,
with only LVCMOS devices connected to the IO pins
(i.e. no LEDs etc.). I am particularly interested in the
design of V_core section, beause the 3.3V part will
have a high-performance SMPS capable up to ~12A,
but I don't know whether there should be a SMPS for
1.5V (I_core > say 1A) or just a linear regulator (I_core <= 1A).
Best regards
Piotr Wyderski
Article: 82701"Simon Peacock" <nowhere@to.be.found> wrote in message news:4260a1ef$1@news2.actrix.gen.nz... > depends... > > Do you normally add "Would you like fries with that?" Only when I use the wrong supply voltage..... :-)Article: 82702
kittyawake@gmail.com wrote: >hi, > I want to input data from outside the board to the microblaze.can i >do it using uart in my design? Yes. >Can i make this data come from the >hyperterminal to the uart and from uart to microblaze? Yes. >In such a system >what ever output microblaze sends outside the board can come on the >hyperterminal.Can this output data go to a file? Yes, HyperTerminal can capture to a file. -- Dan HenryArticle: 82703
Well, I, for one, am a professional (EE) with a fairly strong background in hardware but not much experience with FPGAs. The "hobbiest" approach is the only viable way for me to get up-to-speed with some of their capabilities. My company is very cautious with spending on training (yes, I agree that they should but this is a government (DOE) affiliation so it's like screaming into a wind-storm!). The only way I can get any experience and prove to them it would be worthwhile in future projects is through things like the Xilinx Spartan 3 development board with the free Webpack and ModelSim. Total investment was about $100. Still within hobbiest ranges. All the points brought up about soldering the BGAs is very much a high interest point for me, also. I've heard of the "toaster oven" approach but have not, as yet, tried it. I've used ExpressPCB for inexpensive printed circuit boards (3 boards (2.5" x 3.8" each), double-sided, plated through holes, no silkscreen, no soldermask for $60, delivered!) quite successfully. The schematic capture and PCB layout programs are provided free. The downside is the tools are not exportable to other tool sets. They have just recently added DXF output, though. This sounds like a fairly viable, inexpensive/hobbiest method for generic experimentation. Just my $0.02 worth... Dave "JJ" <johnjakson@yahoo.com> wrote in message news:1113602844.641997.77180@z14g2000cwz.googlegroups.com... > I'd imagine most people here are employed, consultants, small business, > occasional blue chip EEs etc beside the FPGA vendor reps. The traffic > reflects the niggling details that make simple things harder than 1st > seems and a little ragging on the vendors to boot. Not sure if open > source is of that much interest here except to the entry level or for > educational purposes. > > The free semi free tools are a great way for vendors to rope in new > paying customers perhaps a future woz or 2 will give them larger order, > no OSS agenda here. > > Since FPGAs are heading up into low end ASIC territory, not sure if > hobbyists will become a major deal here, mostly serious hobyists are > perhaps buddying engineers. It may seem as if FPGAs are a little > reminiscant of the 70s computer clubs but I don't expect to see > homebrew clubs popping up. > > regards > > johnjakson at usa dot com >Article: 82704
On Sat, 16 Apr 2005 15:34:33 +0200, Dave wrote: >> Dave, >> >> I'd estimate at least $700K/yr for Atlanta, and about 20% more for San >> Jose -- especially since this person will need to do technical >> documentation/marketing material. > > $70k right!? For San Jose, 1.2 * 70k (84k) sounds a little low. Then again, it does say "at least." And $70k is much more plausible than $700k. ;-) A BSEE with 5 years of experience could make $84k. Some BSEE's I graduated with in 2001 are making more than $84k in the San Jose area right now. Others can't find work. At least one guy I know got hired at $85k, straight out of University. I haven't kept up with him, so I don't know whether he got laid off or not. But he worked while he was attending school, and that work experience may have helped him negotiate his salary up. I have to admit that I don't see a lot of job descriptions where "PhD" is a requirement, though. Sometimes I see "MSEE required." More often it will be "MSEE or equivalent experience." Anyone thinking of relocating to the San Jose area should be sure to understand that the cost of housing is much higher there than in most of the country. --MacArticle: 82705
Dave wrote: >>Well, to join two threads together, if a 'professional' in this industry >>makes $700k/year, I'm about to become a professional! And I already have a >>PhD :-) [it takes 3 years in the UK, on average btw] > > > Any salary insights then based on your experience? Well, my situation is a bit different - I and 3 friends started and ran a small company for 6 years in the UK, finally persuading someone over here in the US that it was worth buying :-) So, one relocation later, my salary probably isn't representative of Joe-public-with-a-phd. There is a senior engineer working with me on ~135k though, without a PhD. This is in the bay area, south of San Francisco. It's all software development however, not hardware. ATB, SimonArticle: 82706
Piotr Wyderski schrieb: > Hello, > > I would like to build a prototype power supply for my > project, and since I don't have real data about its power > consumption, I need some estimations. Could you > please tell me (basing on your experience and previous > designs) how much current does a Cyclone 1C6 running > at 180 MHz need? I know that this heavily depends on > the design, but I just need an overestimated approximation. > Remaining parameters: V_core = 1.5V, V_io = 3.3V, > with only LVCMOS devices connected to the IO pins > (i.e. no LEDs etc.). I am particularly interested in the > design of V_core section, beause the 3.3V part will > have a high-performance SMPS capable up to ~12A, > but I don't know whether there should be a SMPS for > 1.5V (I_core > say 1A) or just a linear regulator (I_core <= 1A). > > Best regards > Piotr Wyderski > you can download an excel spreadsheet to estimate the powerconsumption (PowerPlay Early Power Estimators) at http://www.altera.com/support/devices/estimator/pow-powerplay.html there are also some reference design in this section at http://www.altera.com/support/devices/vendors/pow-vendors.htmlArticle: 82707
In article <pan.2005.04.16.16.25.56.96934@bar.net>, Mac <foo@bar.net> wrote: >On Sat, 16 Apr 2005 15:34:33 +0200, Dave wrote: > >>> Dave, >>> >>> I'd estimate at least $700K/yr for Atlanta, and about 20% more for San >>> Jose -- especially since this person will need to do technical >>> documentation/marketing material. >> >> $70k right!? > >For San Jose, 1.2 * 70k (84k) sounds a little low. Then again, it >does say "at least." And $70k is much more plausible than $700k. ;-) Alas, I'm sure you're right. I had high hopes that something had radically changed in the industry in the last few months ;-) > >I have to admit that I don't see a lot of job descriptions where "PhD" is >a requirement, though. Sometimes I see "MSEE required." More often it will >be "MSEE or equivalent experience." True. I'm wondering about this as I'm about to complete my MSECE in the next six months or so (I've got 20 years of industry experience, I went back to school in 2002 when everything hit the fan). I keep toying with the idea of continuing on to get a PhD with the idea that doing so would get me a more research-oriented job (which I would like). But I'm kind of afraid that a PhD actually reduces your chances of finding employment because it narrows your focus and if you choose the wrong little area to focus on - well, it could just be a wasted effort. Are there really 'research oriented' jobs out there anymore? > >Anyone thinking of relocating to the San Jose area should be sure to >understand that the cost of housing is much higher there than in most of >the country. > MUCH higher. To the point that if you lose you job in SJ you might only have a couple of months before you're living in your car. PhilArticle: 82708
In article <zG28e.2191$J12.2162@newssvr14.news.prodigy.com>, David <dmsbox2000-news1@yahoo.com> wrote: > > >There are ISE Foundation and ISE Webpack versions for Red Hat Enterprise >Linux 3.0 How strict is this port? Has anybody managed to run these >tools on Fedora or Mandrake Linux (now Mandriva), or any other Linux >variant? If so, how well did it work? > I've managed to get it running on Mandrake (I think Ihave 10.0). I had to install an openmotif package to get libXm.so.3. At the end of the long install I got some popup box message that said something about not being able to run an install drivers script of some sort - I suspect that means I won't be able to run IMPACT. Also, you need to do: export LD_ASSUME_KERNEL=2.4.7 export DISPLAY=:0 before you run the installer (and before you start any of the Xilinx tools). At the end after I got it all installed I tried running 'ise' and it took several _minutes_ for it to actually appear on my screen - What's up with that? PhilArticle: 82709
Can't even spoll your names right... Syms "Simon Peacock" <nowhere@to.be.found> wrote in message news:4260a199@news2.actrix.gen.nz... > this Simon.. is a professional :-) > > but thoughts and ideas expressed by Simon may not be the same as all Simons. > > "Simon" <news@gornall.net> wrote in message > news:rrOdnXY7xaVu9P3fRVn-qg@comcast.com... > > > > Well, I'm a hobbyist. It makes a change from coding software for a > > Simon. > >Article: 82710
In article <d3rmal1tvd@enews3.newsguy.com>, Phil Tomson <ptkwt@aracnet.com> wrote: >In article <zG28e.2191$J12.2162@newssvr14.news.prodigy.com>, >David <dmsbox2000-news1@yahoo.com> wrote: >> >> >>There are ISE Foundation and ISE Webpack versions for Red Hat Enterprise >>Linux 3.0 How strict is this port? Has anybody managed to run these >>tools on Fedora or Mandrake Linux (now Mandriva), or any other Linux >>variant? If so, how well did it work? >> > >I've managed to get it running on Mandrake (I think Ihave 10.0). I had to >install an openmotif package to get libXm.so.3. At the end of the long >install I got some popup box message that said something about not being >able to run an install drivers script of some sort - I suspect that means >I won't be able to run IMPACT. > >Also, you need to do: > >export LD_ASSUME_KERNEL=2.4.7 >export DISPLAY=:0 > >before you run the installer (and before you start any of the Xilinx >tools). > >At the end after I got it all installed I tried running 'ise' and it took >several _minutes_ for it to actually appear on my screen - What's up with >that? > Well, it turns out the the ISE GUI is unusable for me - it takes up to several minutes to respond to mouse clicks. However, I'd actually prefer to be able to script the whole thing. I know that a while back someone posted a link to a webpage that showed how to run the Xilinx tools from the command line but now I can't find it even via goodle. Anyone got the link? PHilArticle: 82711
Hi, I work on a project involving the rocketios. I have read the user guide and among other things notcied the decoupling advised : a very big capcitor at the output of the LDO (330 uF) and several smaller ones (1 uF). The user guide advises eight 1 uF. Are that many capacitors necessary especially when not all the rocketios (2 for instance in my case) are used ? Moreover I looked at the ML300 board design and I did not see these 1 uF capacitors so what is the right move here ? Any advice ? Thanks, JFArticle: 82712
In article <d3po2h$mb9$05$1@news.t-online.com>, Guenter Dannoritzer <dan_nospam_noritzer@web.de> wrote: >Hi, > >This is a slightly off topic question. I have been following this >discussion about the new ISE 7.1. Before it got released I remember >there was some talk about that the GUI would be based on a new GUI >library, not the WINDU stuff anymore. > >After it got released I did not find any talk about that anymore, maybe >I overlooked something. > >Did it really got changed or is 7.1 still using the WINDU stuff? > It definately still seems to be using the WINDU stuff. A windu directory gets created when installing. >If it got changed, what GUI library is it now based on? > Seems to be based on openmotif (which is apparently what WindU translates to). I seem to recall a rumor that Xilinx was going to rewrite in something like Qt, but that hasn't happened yet. Maybe in the next release. BTW: Why doesn't Xilinx either statically link their executables or ship the required shared libs so you can run it on any Linux distro? PhilArticle: 82713
On Sat, 16 Apr 2005 19:37:07 +0000, Phil Tomson wrote: > In article <d3rmal1tvd@enews3.newsguy.com>, > Phil Tomson <ptkwt@aracnet.com> wrote: >>In article <zG28e.2191$J12.2162@newssvr14.news.prodigy.com>, >>David <dmsbox2000-news1@yahoo.com> wrote: >>> >>> >>>There are ISE Foundation and ISE Webpack versions for Red Hat Enterprise >>>Linux 3.0 How strict is this port? Has anybody managed to run these >>>tools on Fedora or Mandrake Linux (now Mandriva), or any other Linux >>>variant? If so, how well did it work? >>> >> >>I've managed to get it running on Mandrake (I think Ihave 10.0). I had to >>install an openmotif package to get libXm.so.3. At the end of the long >>install I got some popup box message that said something about not being >>able to run an install drivers script of some sort - I suspect that means >>I won't be able to run IMPACT. >> >>Also, you need to do: >> >>export LD_ASSUME_KERNEL=2.4.7 >>export DISPLAY=:0 >> >>before you run the installer (and before you start any of the Xilinx >>tools). >> >>At the end after I got it all installed I tried running 'ise' and it took >>several _minutes_ for it to actually appear on my screen - What's up with >>that? >> > > > Well, it turns out the the ISE GUI is unusable for me - it takes up to > several minutes to respond to mouse clicks. > > However, I'd actually prefer to be able to script the whole thing. I know > that a while back someone posted a link to a webpage that showed how to > run the Xilinx tools from the command line but now I can't find it even > via goodle. > Anyone got the link? > > PHil To get the command line options do -h for each command xst -h ngdbuild -h virtex4 map -h virtex4 par -h virtex4 trce -h bitgen -hArticle: 82714
Here, here! I failed trying to get the correct curses library running on my Fedora Core 3 machine. Pete "Phil Tomson" <ptkwt@aracnet.com> wrote in message news:d3rpp9111n6@enews2.newsguy.com... > In article <d3po2h$mb9$05$1@news.t-online.com>, > Guenter Dannoritzer <dan_nospam_noritzer@web.de> wrote: >>Hi, >> >>This is a slightly off topic question. I have been following this >>discussion about the new ISE 7.1. Before it got released I remember >>there was some talk about that the GUI would be based on a new GUI >>library, not the WINDU stuff anymore. >> >>After it got released I did not find any talk about that anymore, maybe >>I overlooked something. >> >>Did it really got changed or is 7.1 still using the WINDU stuff? >> > > It definately still seems to be using the WINDU stuff. A windu directory > gets created when installing. > >>If it got changed, what GUI library is it now based on? >> > > Seems to be based on openmotif (which is apparently what WindU translates > to). > > I seem to recall a rumor that Xilinx was going to rewrite in something > like Qt, but that hasn't happened yet. Maybe in the next > release. > > BTW: Why doesn't Xilinx either statically link their executables or ship > the required shared libs so you can run it on any Linux distro? > > PhilArticle: 82715
> > However, I'd actually prefer to be able to script the whole thing. I know > that a while back someone posted a link to a webpage that showed how to > run the Xilinx tools from the command line but now I can't find it even > via goodle. I don't know about the link, but here are a few commands that should do most of jobs that ISE GUI does: ngdbuild : Translate on GUI map: Map par: Place & Route trce: Timing Analysis bitgen: Generate Programming File ISE GUI keeps a command log (.cmd_log) file in the working directory. It may be helpful sometimes. HTH, Jim jimwu88NOOOSPAM@yahoo.com (remove capital letters) http://www.geocities.com/jimwu88/chipsArticle: 82716
Phil Tomson <ptkwt@aracnet.com> wrote: > Well, it turns out the the ISE GUI is unusable for me - it takes up to > several minutes to respond to mouse clicks. > However, I'd actually prefer to be able to script the whole thing. I know > that a while back someone posted a link to a webpage that showed how to > run the Xilinx tools from the command line but now I can't find it even > via goodle. > Anyone got the link? Loo at the <projectname>.cmd_log file after a successfull run of the GUI. You see all commands executed. -- Uwe Bonnes bon@elektron.ikp.physik.tu-darmstadt.de Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt --------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------Article: 82717
hi,
I am trying to figure out how i can send data to the microblaze from
outside the FPGA board.I thought if i can print something on the
hyperterminal using printf,i should be able too read something from the
hyperterminal using scanf?i wanted to try this out..but i am not able
to compile my code.I have written a small code :
******************************************************************
#include "xparameters.h"
#include "xbasic_types.h"
Xuint32 input;
main()
{
xil_printf("input data /n/r");
scanf("%d", input);
xil_printf("inputted data was= %d/n/r",input);
while(1);
}
*******************************************************************
When i compile this code,i get the following error
****************************************************************
mb-ld: region ilmb_cntlr is full (microblaze_0/code/executable.elf
section .bss_stack)
mb-ld: region ilmb_cntlr is full (microblaze_0/code/executable.elf
section .bss_stack)
make: *** [microblaze_0/code/executable.elf] Error 1
Done
I have 64KB of local memory.Any idea why am i getting this error?
Does anyone know any better way of inputting data to the fpga?
thanx.
Article: 82718Phil Tomson <ptkwt@aracnet.com> wrote: > Well, it turns out the the ISE GUI is unusable for me - it takes up to > several minutes to respond to mouse clicks. > However, I'd actually prefer to be able to script the whole thing. I know > that a while back someone posted a link to a webpage that showed how to > run the Xilinx tools from the command line but now I can't find it even > via goodle. > Anyone got the link? Look at the <projectname>.cmd_log file after a successfull run of the GUI. You see all commands executed. -- Uwe Bonnes bon@elektron.ikp.physik.tu-darmstadt.de Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt --------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------Article: 82719
David wrote: > There are ISE Foundation and ISE Webpack versions for Red Hat Enterprise > Linux 3.0 How strict is this port? Has anybody managed to run these > tools on Fedora or Mandrake Linux (now Mandriva), or any other Linux > variant? If so, how well did it work? I have it working on Debian Unstable (sid), with no more than the usual environment hassles, after getting the right packages installed (none from outside of main+contrib+non-free: libcurl, libmotif3, etc). Either on this machine or on the Fedora Core 3 machine I tried, the installer would recoginize each mouse click twice or not at all, depending on the widget. So, I used keyboard shortcuts (tab, enter) and got through it that way. For the most part seems to operate properly, but I'm in the early hobbiest stage, so have no way of knowing how screwed it might get deeper into "normal" usage.Article: 82720
For the switches that route signals in an FPGA, ideally, one wants something that does not delay signals, even if it takes longer to program than ordinary memory. So the gate which determines where a signal should go should not be symmetric in terms of the time taken for the input to affect the output; the control input can be slow, but the signal input should not be delayed at all. Electromechanical relays have this characteristic; the magnet takes time to move the contacts, but the signal that flows through the contacts, if they are closed, just flows through conductors and does not actuate anything - and so, is not delayed. Of course they're not very practical on an FPGA chip. Or are they? Texas Instruments' DLP chips, used in projection TVs, involve moving little pieces of metal around on chips. On a small scale, surface tension and adhesion are big problems, so this may be difficult... but maybe it is possible to build an FPGA whose programmable routing to the logic elements is made from a kind of electromechanical relay! John SavardArticle: 82721
David wrote: > > > There are ISE Foundation and ISE Webpack versions for Red Hat Enterprise > Linux 3.0 How strict is this port? Has anybody managed to run these > tools on Fedora or Mandrake Linux (now Mandriva), or any other Linux > variant? If so, how well did it work? > I have it running on Debian Woody, after installing libmotif3 (I think it was). I had to download the full version (as opposed to the one containing only the FPGA support I needed, which wouldn't run). The GUI is painfully slow on my 900MHz/512MB Celeron. I had to recompile the windrvr6 and xpc4drvr modules for my kernel (2.4.25) and load them manually, then the parallel port JTAG adapter /worked/ fine. The sources are available for download on the Xilinx site. However, after a reboot the JTAG adapter no longer works; Impact just complains about the port being already in use (rc=ffffffff, I think). Maybe I happened to do something in the magic order last time, but nothing I've tried has made any improvement (permissions, removing lp, creating devices etc.) If anyone has any ideas, I will be grateful. -- Lawrence Wilkinson lawrence@ljw.me.uk The IBM 360/30 page http://www.ljw.me.uk/ibm360Article: 82722
Not sure where you are going with this but I can hazard a guess. I have read of optical switches that route light beams using essentially the same idea as DLP, it all just smoke and mirrors, I mean electro static controlled mirrors or MEMs devices. Have no clue what that has to do with FPGAs, though unless you think of an optical switch as being a logic gate. Mind you DLPs are not that big I mean relatively few pixels barely even 1M. An FPGA no doubt has many more SRAM controlled switches 1 or 2 orders more. Also DLP mirrors are not analog, they use PWM IIRC to simulate analog levels so I'd guess an optical steered mirror FPGA switch would be binary and far bigger than an FPGA route switch. Also its taken TI literally 2 decades to make this thing producible. BTW you do know something about mos switches too, at least for very small interconnects the signal can propagate as an analog signal through a mos pass gate, while the logic delay for switching proper on/off is soso, the transit time through a mos device is an order less. Problem is it must be rebuffered fairly often. I also imagine TI has most of the patents on DLP like technology too. johnjakson at usa dot comArticle: 82723
I would suggest you check out some job boards (dice, hotjobs, monster), put in some key words (FPGA, VHDL, verilog, PhD if you please), and see what comes up for the region(s) you are considering. As many have noted, San Jose (& Silicon Valley) has been a very expensive place to live, and the salaries go with it (more or less.) Jason "Dave" <no@spam.com> wrote in message news:d3oo69$1ft$00$1@news.t-online.com... > Hi to all, > > Just wondering if you could give me an idea of a current salary ballpark > for the following details/person: > > Person: > PhD in DSP on FPGA (3.5 years of RTL VHDL mainly for Xilinx and C++ > development) > 1st class honours degree in Software Development/Electronic & Electrical > Engineering > 1 years industry experience (+ some during PhD) > sales training/experience > extensive presentation writing/giving experience > > Job description: > DSP on FPGA design in RTL VHDL on Xilinx/Altera/Lattice/Actel etc. > C++ development > Customer visits/application support > Technical documentation/marketing material > Presentations to customers/conferences/seminars > > Job Location: > Please give an idea for Atlanta and San Jose > > Thanks very much in advance for your time > >Article: 82724
In article <d3s0co$4mj$1@lnx107.hrz.tu-darmstadt.de>, Uwe Bonnes <bon@elektron.ikp.physik.tu-darmstadt.de> wrote: >Phil Tomson <ptkwt@aracnet.com> wrote: > >> Well, it turns out the the ISE GUI is unusable for me - it takes up to >> several minutes to respond to mouse clicks. > >> However, I'd actually prefer to be able to script the whole thing. I know >> that a while back someone posted a link to a webpage that showed how to >> run the Xilinx tools from the command line but now I can't find it even >> via goodle. >> Anyone got the link? > >Loo at the <projectname>.cmd_log file after a successfull run of the >GUI. You see all commands executed. Well, I haven't had a successful run of the GUI yet. I'll have to look at it on a Windows machine at school. BTW: is it possible to set up the project without the GUI? I'm assuming it's just some sort of text file (the project file). Phil
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