Configuration Handbook - Kamami.pl

Passive Serial Configuration1 You cannot cascade enhanced configuration devices.You can use a single configuration chain to configure Stratix III deviceswith other Altera devices. To ensure that all devices in the chain completeconfiguration at the same time, or that an error flagged by one deviceinitiates reconfiguration in all devices, all of the device CONF_DONE andnSTATUS pins must be tied together.fFor more information on configuring multiple Altera devices in the sameconfiguration chain, refer to the Configuring Mixed Altera Device Chainschapter in the Configuration Handbook.Figure 11–25 shows the timing waveform for the PS configuration schemeusing a configuration device.Figure 11–25. Stratix III PS Configuration Using a Configuration Device Timing WaveformnINIT_CONF orVCC/nCONFIGOE/nSTATUSnCS/CONF_DONEDCLKDATAt CF2ST1t CHt DSU t CLt OEZXD D D D0 1 2 3 D nUser I/Ot DHt COTri-StateTri-StateUser ModeINIT_DONEt CD2UM (1)Note to Figure 11–25:(1) The initialization clock can come from the Stratix III device's internal oscillator or the CLKUSR pin.ffFor timing information, refer to the Enhanced Configuration Devices(EPC4, EPC8 and EPC16) Data Sheet or the Configuration Devices forSRAM-Based LUT Devices Data Sheet in the Configuration Handbook.Device configuration options and how to create configuration files arediscussed further in the Software Settings chapter of the ConfigurationHandbook.11–60 Altera CorporationStratix III Device Handbook, Volume 1 May 2007