Configuration Handbook - Kamami.pl

Passive Parallel Asynchronous ConfigurationAll devices start and complete configuration at the same time.Figure 7–32 shows multi-device PPA configuration when both devices arereceiving the same configuration data.Figure 7–32. Multiple-Device PPA Configuration Using a Microprocessor When Both devices Receive theSame DataV CC (2)(2) V CC10 kΩV CC (2)10 kΩAddress Decoder10 kΩADDRMemoryADDR DATA[7..0]V CC (2)10 kΩStratix II DeviceStratix II DeviceMicroprocessorDATA[7..0]nCS (1)CS (1)CONF_DONEnSTATUSnWSnRSnCONFIGRDYnBSYnCEDCLKGNDnCEON.C. (3)MSEL3 VCCMSEL2MSEL1MSEL0GNDDATA[7..0]DCLKnCS (1)CS (1)CONF_DONEnSTATUSnCEnCEO N.C. (3)nWSMSEL3 VCCnRSMSEL2nCONFIG MSEL1RDYnBSY MSEL0GNDGNDNotes to Figure 7–32:(1) If not used, the CS pin can be connected to V CC directly. If not used, the nCS pin can be connected to GND directly.(2) The pull-up resistor should be connected to a supply that provides an acceptable input signal for all devices in thechain. V CC should be high enough to meet the V IH specification of the I/O on the device and the external host.(3) The nCEO pins of both devices are left unconnected when configuring the same configuration data into multipledevices.You can use a single configuration chain to configure Stratix II orStratix II GX devices with other Altera devices that support PPAconfiguration, such as Stratix, Mercury , APEX 20K, ACEX ® 1K, andFLEX ® 10KE 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.7–80 Altera CorporationStratix II Device Handbook, Volume 2 May 2007