Bob, this thread and the resulting project http://www.mikrocontroller.net/articles/Xilinx_USB-JTAG-Adapter are nearly identical with org. DLC9G/DLC9LP, afair the only difference was in the power rail part. The orange red error can be therefore the detection circuit or CPLD itself (or its programming which can be forced repalced).
Hi Thomas, Thanks for your e-mail reply (18/07/2013) above. I have looked at the Faulty Xilinx DLC9G in more detail and have found the initial problem is due to a Faulty Comparator (U2 - LT1719S6) which is connected to the 3.3VSW (Switched) supply. The problem was that the supply was being loaded down by this IC, I had measured approximately 1.5 Ohms across the supply, which after removing the IC returns to a more acceptable ~460 Ohms. Previously the 3.3VSW supply was only reaching ~0.65V, however with the IC removed it now reaches 3.3V OK. I am now awaiting a replacement IC which will hopefully restore correct operation of the DLC9G. Your previous post - Datum: 08.08.2009 09:24 shows part of what appears to be the correct Xilinx DLC9G schematic along with a photo of the PCB and also a partial parts list. This was very usefull in identifying the problem area and also the actual components, as it did show the area of the circuit where the faulty component was. The difference in the circuit diagrams in this case was quite important as the DLC9G has switched 1.8V and 3.3V supplies. Thanks again for your help, I am still trying to find the 'original' complete DLC9G schematics, however I suspect it may now be almost impossible to find copies. Best Regards Bob.
Hello Thanks for your work, is it possible to replace the cpld with XC2C64A-7VQ100C or other ones?
Ich weiß der Thread is uralt, aber falls jemand Probleme mit dem DLC9 unter Windows 10 hat kann hier gerne meine Lösung nachlesen: https://www.kilgus.net/2022/02/05/xilinx-usb-cable-and-code-39-windows-10/ Vielleicht hilft's ja dem einen oder anderen. LG, Marcel
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