Configuration Handbook - Kamami.pl

Configuration SchemesRestart Configuration on Frame Error option is not turned on, the Stratixor Stratix GX devices drive nSTATUS low until they are reset with a lowpulse on nCONFIG.You can also cascade several EPC2/EPC1 configuration devices toconfigure multiple Stratix and Stratix GX devices. When all data from thefirst configuration device is sent, it drives nCASC low, which in turndrives nCS on the subsequent configuration device. Because aconfiguration device requires less than one clock cycle to activate asubsequent configuration device, the data stream is uninterrupted.1 You cannot cascade enhanced (EPC16, EPC8, and EPC4)configuration devices.You can use a single configuration chain to configure multiple Stratix andStratix GX devices. In this scheme, the nCEO pin of the first device isconnected to the nCE pin of the second device in the chain. If there areadditional devices, connect the nCE pin of the next device to the nCEO pinof the previous device. To configure properly, all of the deviceCONF_DONE and nSTATUS pins must be tied together.Figure 11–4 shows an example of configuring multiple Stratix and StratixGX devices using a configuration device.11–12 Altera CorporationStratix Device Handbook, Volume 2 July 2005