impack coolrunner-ii
"cannot be used anymore" -- Did it work before? Maybe the device got damaged somehow.
The devices were brand new, when i saw this error first time, i tried to program the device with another jed file, just for test. i write a simple vhdl code, and with that one there is no problem, can be programmed, read back, get device id, erase blank check. Same device, if i load the jed file with the problems, i try to program, progress bar goes to the end and after that error message is displayed.
On the board there is no other pld than XC2C128, no FPGA, no Config Memory, so cannot be from this. I know that Init and Done are only at FPGA.
I also try to use different cable speed, from 750 KHz to 24 MHz and the result was the same. Power supply level is ok, 1.8V for the core and 3.3V for IO2 and JTAG. On the same board, i tried with XC2C256, different jed file, and is working.
Can be file the jed file wrong ??? Why the CPLD cannot get device ID ? is there any way to disable JTAG without any confirmation ?. Anyway, if JTAG is disabled, the device should still work, but doesn't work...
Thanx...