Configuration Handbook - Kamami.pl

Configuration Features6. Select the name of the file you added to the SOF Data area and clickProperties.7. Check the Compression check box.When multiple Stratix II or Stratix II GX devices are cascaded, you canselectively enable the compression feature for each device in the chain ifyou are using a serial configuration scheme. Figure 7–2 depicts a chain oftwo Stratix II or Stratix II GX devices. The first Stratix II or Stratix II GXdevice has compression enabled and therefore receives a compressed bitstream from the configuration device. The second Stratix II orStratix II GX device has the compression feature disabled and receivesuncompressed data.In a multi-device FPP configuration chain all Stratix II or Stratix II GXdevices in the chain must either enable of disable the decompressionfeature. You can not selectively enable the compression feature for eachdevice in the chain because of the DATA and DCLK relationship.Figure 7–2. Compressed & Uncompressed Configuration Data in the SameConfiguration FileSerial Configuration DataCompressedConfigurationDataDecompressionControllerStratix II orStratix II GXFPGAnCEnCEOUncompressedConfigurationDataStratix II orStratix II GXFPGAnCE nCEO N.C.Serial or EnhancedConfigurationDeviceGNDYou can generate programming files for this setup from the ConvertProgramming Files window (File menu) in the Quartus II software.Design Security Using Configuration Bitstream EncryptionStratix II and Stratix II GX devices are the industry’s first devices with theability to decrypt a configuration bitstream using the AdvancedEncryption Standard (AES) algorithm—the most advanced encryptionalgorithm available today. When using the design security feature, a7–8 Altera CorporationStratix II Device Handbook, Volume 2 May 2007