Configuration Handbook - Kamami.pl

Fast Passive Parallel ConfigurationFigure 6–19. APEX II FPP Configuration Using an Enhanced Configuration Device Timing WaveformnINIT_CONF orVCC/nCONFIGt LOEOE/nSTATUSnCS/CONF_DONEt CEt HCt LCDCLKDATAUser I/OINIT_DONEDriven Highbit/byte1bit/byte2bit/bytent OETri-StateTri-StateUser ModeNote to Figure 6–19:(1) APEX II devices enter user mode 40 clock cycles after CONF_DONE goes high. The initialization clock can come fromthe APEX II internal oscillator or the CLKUSR pin.(1)ffFor timing information, refer to the Enhanced Configuration Devices(EPC4, EPC8, & EPC16) Data Sheet in the Configuration Handbook.Device configuration options and how to create configuration files arediscussed further in Software Settings, chapter 6 and 7 in volume 2 of theConfiguration Handbook.FPP Configuration Using a MicroprocessorIn the FPP configuration scheme, an intelligent host, such as amicroprocessor or CPLD, can transfer configuration data from a storagedevice, such as flash memory, to the target APEX II device. Configurationdata can be stored in RBF, HEX or TTF format. Figure 6–20 shows theconfiguration interface connections between the APEX II device and amicroprocessor for single device configuration.6–38 Altera CorporationConfiguration Handbook, Volume 1 August 2005