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I want to translate an Altium PCB file to mentor pads. I used PADS Layout Translator 2007 but when I open the results in PADS, There are just some crosses and nothing is visible. I have try it with PCB v4. Newer versions are not supported with the translator.
Mentor Hyperlynx has a translator...
I have simulated the clock net for a mobile DDR in both CST and Hyperlynx and got 2 different results! Here are the wave forms of both:
From the Hyperlynx results there are bad ringings but in the CST waveform of the same net, everything is just fine! There is just a 10 ohm series termination...
Thank you abaz.
I start to work with CST, it is capable of 3D analysis and I think it worth some try. I get some answers but still needs some work on CST.
Also I start to work with Mentor PADS v9.4 and it can import Altium pcbdoc files so no more need for script. Thank you very much.
If I face...
Thank you abaz, I've checked and there was nothing!!! I am really confused. I'll make a new project with just memory and the controller and try it again. Maybe I'll change the Altium version.
Have you ever tried other softwares for SI? I looked in CST but it is very complicated!
This is a board with FPGA and DSP and there is 4 voltage rails for FPGA and 5 for DSP and 1 for 0.9V DDR VTT and one aux 5V.
If all of them are not necessary I should delete them?
The updates are just fine, everything is updated correctly, I'll delete extra supply net rules and perform SI again.
Is there anybody with Signal Integrity Experience?
Here are some shots:
It is DDR2 Signal Integrity Model Editor in Altium. I have changed the Supply Voltage from 5V to 1.8V. All of them were 5V! I have check the IBIS model and there is nothing wrong with it.
In the resistance/capacitance...
I've done all the steps you mentioned and I still get 5V for TOP Value.
I've checked the IBIS model from schematic properties in Altium, Power Voltage and Supply Voltage are set to 5V!!!! I think I should change all of them one by one or is there any other way?
I have the same problem.
---------- Post added at 15:23 ---------- Previous post was at 15:21 ----------
Just found from https://www.sonsivri.to/forum/index.php?topic=21273.0
Start -> Programs -> CST Studio Suite 2009 -> CST update Manager
Import, browse for the .sup, install.
RX LED works fine which means the PHY get the data but in some way in could not pass the data to the processor and also means there is no problem with magnetics which are integrated in RJ45 connector.
I do all the recommended settings for the Ethernet module registers.
TX interrupt works...
I have designed a board with PIC18F87J60 for Ethernet connectivity. Unfortunately I could not receive any packets in microcontroller. I can transmit packets very well but microcontroller does not respond to any RX packets. I have done everything in the datasheet but not even a flag for RX...
Yes. I've downloaded the IBIS model of DDR2 from Micron website and the model of DSP from TI wesite.
PCB is almost finished and the component links are set.
I tried on another project with DDR and still get 5V signal!!!
I could not solve the problem. I've already added 2 PCB layout directives for GND and 1.8V nets. Also I added rules in sheet parameter for supply nets = 1.8V and signal Top Value = 1.8V and Signal Base Value=0 , but there is still 5V pulse!!!