Honored ContributorHello,
I have a chip USB Blaster Rev C. When I program CPLD EPM7064SLC44-10 with Quartus II sp2 12.0 programmer, the process bar goes to 100% and then it shows "Failed". How can I fix this error ? However, it works with ByteBlaster(Parallel port programmer). Thank you.
Honored ContributorDo you know whether or not the USB-Blaster actually works?
Rather than programming the MAX CPLD, try verifying its JTAG ID using the Quartus debugger. Some of the Rev C USB-Blasters came with a flex cable while others come with a ribbon cable ... I recall problems with one of those, but forget which ... I have USB-Blasters with both and they work fine for me. Cheers, DaveHonored ContributorHonored Contributor*sometimes* when the programmer just says "failed", you get a slightly more interesting error message in the Quartus main window, in the "System" log (the first tab in the messages section)
Honored ContributorHonored Contributor...Before I didn't see the "System" log. When I tried, Programmer gave my this error: "Error: JTAG ID code specified in JEDEC STAPL Format File does not match any valid JTAG ID codes for device". Then I found some information about this problem on Altera Forum. Some guy said to connect a pull-down resistor to TCK pin.
But it did not fix the error. I measure the voltage on the pins: TCK = around 0 volts = constant TDO = 4 volts = constant TMS = around 0 volts = constant and TDI = some signal with amplitude 1v Also, I opened my USB Blaster and... there is no any CPLD inside. It based on uC 'Silabs' with IC 74LVC125. Maybe because it is the chip USB Blaster. I bought that in Ebay... Thank you very much, Yaroslav.Honored ContributorHonored ContributorHi Yaroslav,
I would also try a different USB Cable than the one that is provided with the Altera USB-Blaster. Depending where you Purchased your USB-BLASTER, sometimes the Stock USB cables are very cheap and are prone to Shorts or an OPEN connection. Can you post a Picture of how you're interfacing the chip? It would help to see your interface setup. Cheers! -GerryHonored ContributorHi Yaroslav,
--- Quote Start --- I opened my USB Blaster and... there is no any CPLD inside. It based on uC 'Silabs' with IC 74LVC125. Maybe because it is the chip USB Blaster. I bought that in Ebay... --- Quote End --- What does the outside of your USB-Blaster clone look like? Since its a SiLabs clone, its likely based on this design here: http://ixo-jtag.sourceforge.net/archive/ixo_de_usb_jtag.html and I think this is a photo of its internals: http://servux.free.fr/tmp/usbblaster.jpg If you wanted to "debug" your problem, you could look at the ixo.de source code for the clone. Cheers, DaveHonored ContributorFinally, I fix my problem ! The solution was to connect USB-Blaster directly to CPLD (through 74HC244), connect VCCtarget and +5Vcpld together and add a pull-up resistor to TDI pin. The both programmers(my USB-Blaster and also Terasic USB-Blaster) are working now.
Thank you very much, Yaroslav.Honored ContributorHi Yaroslav,
--- Quote Start --- The solution was to connect USB-Blaster directly to CPLD (through 74HC244) --- Quote End --- What was wrong with the 74LVC125 on the SiLabs USB-Blaster? --- Quote Start --- connect VCCtarget and +5Vcpld together --- Quote End --- Your board should have already done that, i.e., the VCC_TARGET pin on the USB-Blaster is supposed to power the buffer inside the USB-Blaster. That is how the USB-Blaster ensures the logic levels transmitted to the board are compatible with the device. If your board did not connect VCC_TARGET, then that would explain the problem. Cheers, Dave
