Configuration Handbook - Kamami.pl

Configuring Stratix II & Stratix II GX DevicesFigure 7–5. Multiple-Device FPP Configuration Using an External Host When Both Devices Receive the SameDataMemoryADDR DATA[7..0]V CC (1) V CC (1)10 kΩ 10 kΩStratix II DeviceStratix II DeviceMSEL[3..0]MSEL[3..0]CONF_DONEnSTATUSGNDCONF_DONEnSTATUSGNDExternal Host(MAX II Device orMicroprocessor)GNDnCEDATA[7..0]nCEO N.C. (2)GNDnCEDATA[7..0]nCEO N.C. (2)nCONFIGDCLKnCONFIGDCLKNotes to Figure 7–5:(1) 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.(2) The nCEO pins of both Stratix II or Stratix II GX devices are left unconnected when configuring the sameconfiguration data into multiple devices.You can use a single configuration chain to configure Stratix II orStratix II GX devices with other Altera devices that support FPPconfiguration, such as Stratix devices. To ensure that all devices in thechain complete configuration at the same time or that an error flagged byone device initiates reconfiguration in all devices, tie all of the deviceCONF_DONE and nSTATUS pins together.fFor more information on configuring multiple Altera devices in the sameconfiguration chain, refer to Configuring Mixed Altera device Chains in theConfiguration Handbook.FPP Configuration TimingFigure 7–6 shows the timing waveform for FPP configuration when usinga MAX II device as an external host. This waveform shows the timingwhen the decompression and the design security feature are not enabled.Altera Corporation 7–21May 2007 Stratix II Device Handbook, Volume 2