Due to a problem in the Quartus® II software version 12.0 SP2 and earlier, you may see this error in SignalTap™ II Logic Analyzer when you use a USB-Blaster™ II cable with Arria® V devices.
To work around this problem, perform the following steps after programming the SRAM Object File (.sof). Note that the jtagconfig executable can be found in <Quartus II software installation directory>/quartus/bin or <Quartus II software installation directory>/quartus/linux.
- Open a Command prompt
- Type the following command
jtagconfig
- Verify which cable number you are using
- Type the following command:
jtagconfig --setparam <cable number> JtagClock 16M
- Verify the change by typing the following command:
jtagconfig - -getparam <cable number> JtagClock
This issue has been fixed beginning with the Quartus II software version 12.1.