What is the maximum downward pressure that can be applied to the top of Altera BGA packages?
Description The following guidelines refer to the downward pressure or compressive load that can be applied to the top of Altera® FPGA BGA packages. Pitch (mm) Pattern Package Type Constant Compressive Load per Solder Ball (g) Eutectic SnPb (tin-lead) SAC (tin-silver-copper) 0.5 Grid MBGA 3 7 0.8 Grid UBGA 6 12 0.92 Hex FBGA 7 14 1 Hex FBGA 8 15 1 Grid FBGA 8 16 1.27 Grid BGA 12 24 Resolution For heat-sink application, Altera recommends heat sink pressure on the package between 20psi to 40psi for effective Thermal Interface Material (TIM) performance Your PCB and the supporting frame should be designed to withstand the pressure of the downward force to prevent bending or flexing of your PCB.How do I change the clock frequency of the USB-Blaster II download cable?
Description The USB-Blaster™ II download cable has a default clock frequency for TCK (JTAG) or DCLK (Active Serial programming) of 24MHz. The frequency may be changed to lower frequencies where signal integrity and timing does not allow operation at 24MHz. Resolution The following comamnd may be used to change the clock frequency of the USB-Blaster II: jtagconfig --setparam <cable number> JtagClock <frequency> <cable number> is the USB-Blaster II cable to be modified. <frequency> is the desired TCK or DCLK frequency. 24M, 16M and 6M are supported. Related Articles What is the nominal operational frequency of TCK in the USB-Blaster download cable? Why does Quartus II Programmer prompt the error message Can't recognize silicon ID when programming an EPCS/EPCQ serial flash device with a .jic file using the USB-Blaster II download cable? Can I change the TCK frequency when using the ByteBlasterMV or ByteBlaster II download cables? Why does the TCK frequency setting of the USB-Blaster II download cable revert to the default value of 24 MHz after being changed? Can I change the TCK frequency when using the USB-Blaster download cable?Can a 9-transceiver channel Arria V GT device support an Rx only channel that already has four 6.144-Gbps duplex or Tx channels?
Description No, a 9-transceiver channel Arria® V GT device cannot support an Rx only channel that already has four 6.144-Gbps duplex or Tx channels. Due to a bug in the Quartus® II software versions 13.1 and earlier, the Fitter will not produce an error message for the configuration above. Resolution This problem is fixed in Quartus II software version 13.1 and an error message is produced with the above illegal configuration.You enabled or disabled the following Design Assistant rules: but at least one of the rules contains an illegal value
Description Due to a change in the Quartus II software version 13.0, you may see this error if your Quartus II Settings File (.qsf) enabled Design Assitant checking for rules M101, M102, M103, M104, or M105. Starting with the Quartus II software version 13.0, Design Assistant only runs post-synthesis or post-fitting. Rules M101, M102, M103, M104, and M105 for state machine checking were only used when running Design Assistant post-elaboration and are no longer supported. Resolution To avoid this error, remove any assignments for Design Assistant rules M101, M102, M103, M104, or M105 from your .qsf.Are there any limitations to using compressed bitstreams for Partial Reconfiguration?
Description In the Quartus® II software version 12.1, you can compress the configuration bitstream. However, if you are also using Configuration via Protocol (CvP), compression of the bitstream is not supported. If you enable CvP for your design and also enable compression of Partial Reconfiguration (PR) bitstream, the PR state machime may not work correctly. Resolution Avoid turning on both CvP and PR compression in the Quartus II software. Use uncompressed bitstreams for designs using CvP with PR. This problem is fixed beginning with the Quartus II software version 12.1 SP1.Why does the Intel® Quartus® II software report that no devices are installed despite installing them?
Description Due to a problem in the the Intel® Quartus® II software version 13.0, you might see the following message during installation if your license is not valid or no longer under maintenance. You successfully installed the Quartus® II software, but did not install any devices. Do you want to launch the device installer to add devices? Resolution To avoid this problem, use the valid license file that is currently under maintenance. The message has been updated beginning with version 13.1 of the Intel® Quartus® II software.Low Speed DDR2 Fails Calibration on Cyclone V Devices
Description This problem affects DDR2 products. DDR2 interfaces targeting Cyclone V devices at speeds less than 267 MHz may fail calibration in the guaranteed read stage. Resolution The workaround for this issue is to continue using an earlier version, or contact Altera Technical Support for assistance by creating a Service Request at http://www.altera.com/mysupport. This issue will be fixed in a future version.Is programming of a serial configuration device that is different from one selected in a .jic file possible?
Description The Quartus® II programmer supports programming of serial configuration devices via JTAG and the Serial Flash Loader which are a higher density than the device that the .jic file was originally targeted at. For example a .jic file that was targeted to an EPCS64 device may be used to program an EPCS128 device using the Quartus II programmer. SVF and JAM files that are generated from the .jic file may only be used to program the targeted device. The Quartus II programmer will allow an EPCQ256 device to be programmed by a .jic file targeted at a lower density device. In this case FPGA configuration may fail due to a difference in the format of the data for devices of 256Mb or greater. Resolution The Quartus II prgrammer is scheduled to be updated to not allow programming of EPCQ256 devices using .jic files intended for lower density devices.Vulnerability in JTAG server potentially allows a local attacker to execute arbitary code
Description With Intel® Quartus® Prime software versions from 15.1 to 18.0 and Quartus II software versions from 11.0 to 15.0, unquoted service paths may cause JTAG server to be vulnerable to the replacement of required executables. On reboot, these may be run with elevated privileges. This problem only occurs if the installation path contains spaces, if there are no spaces in the installation path then you are not affected by this vulnerability. This problem affects Intel Quartus Prime Pro, Standard and Lite editions as well as the subscription and web editions of the Quartus II software. This problem only affects installations on Windows. This problem also affects the Intel Quartus Prime and Quartus II standalone programmer version 18.0 and earlier. The Quartus II software and standalone programmer, version 10.1 and earlier, are not affected by this problem. Resolution To avoid this vulnerability, perform one of the following actions: If the Intel® Quartus® Prime software has already been installed to a path with spaces, remedy this vulnerability by downloading and installing the patch intel_sa00151_patch.exe (md5sum: 35ce4d672cef67efebdd3d5b866e58f3), then running the script that is extracted from the patch. If the Intel® Quartus® Prime software version 18.0 and earlier has not yet been installed, ensure that the installation path does not contain spaces. Install the Intel® Quartus® Prime software version 18.0 Update 1 or later where the vulnerability has been fixed. Acknowledgements: Intel® would like to thank Stefan (@Skanthak) for reporting this problem and working with us on coordinated disclosure.The Text Editor toolbar is not displayed in the Quartus II software
Description The Text Editor toolbar is not displayed. Resolution To display the Text Editor toolbar, perform the following:1. Open the Text Editor,2. On the Window menu of the main Quartus II window, click Detach Window.3. Right-click anywhere on the menu bar of the Text Editor.4. Click Text Editor.