Configuration Handbook - Kamami.pl

Configuring Stratix II & Stratix II GX DevicesTable 7–22. Dedicated Configuration Pins on the Stratix II & Stratix II GX Device (Part 10 of 10)Pin NameUser ModeConfigurationSchemePin TypeDescriptionnCS/CS I/O PPA Input Chip-select inputs. A low on nCS and a high onCS select the target device for configuration.The nCS and CS pins must be held activeduring configuration and initialization.During the PPA configuration mode, it is onlyrequired to use either the nCS or CS pin.Therefore, if only one chip-select input is used,the other must be tied to the active state. Forexample, nCS can be tied to ground while CSis toggled to control configuration.In non-PPA schemes, it functions as a user I/Opin during configuration, which means it istri-stated.After PPA configuration, nCS and CS areavailable as user I/O pins and the state ofthese pins depends on the Dual-Purpose Pinsettings.RUnLUN/A if usingRemoteSystemUpgradeI/O if notRemoteSystemUpgrade inFPP, PS orPPAInputInput that selects between remote update andlocal update. A logic high (1.5-V, 1.8-V, 2.5-V,3.3-V) selects remote update and a logic lowselects local update.When not using remote update or local updateconfiguration modes, this pin is available asgeneral-purpose user I/O pin.When using remote system upgrade in ASmore, the RUnLU pin is available as ageneral-purpose I/O pin.PGM[2..0]N/A if usingRemoteSystemUpgradeI/O if notusingRemoteSystemUpgrade inFPP, PS orPPAOutputThese output pins select one of eight pages inthe memory (either flash or enhancedconfiguration device) when using a remotesystem upgrade mode.When not using remote update or local updateconfiguration modes, these pins are availableas general-purpose user I/O pins.When using remote system upgrade in ASmore, the PGM[] pins are available asgeneral-purpose I/O pins.Altera Corporation 7–103May 2007 Stratix II Device Handbook, Volume 2