Configuration Handbook - Kamami.pl

Configuring Mercury, APEX 20K (2.5 V), ACEX 1K & FLEX 10K DevicesYou can use a single configuration chain to configure Mercury,APEX 20K, ACEX 1K, and FLEX 10KE devices with other Altera devices.To ensure that all devices in the chain complete configuration at the sametime or that an error flagged by one device initiates reconfiguration in alldevices, all of the device CONF_DONE and nSTATUS pins must be tiedtogether.fFor more information on configuring multiple Altera devices in the sameconfiguration chain, refer to the Configuring Mixed Altera FPGA Chains,chapter 8 in volume 2 of the Configuration Handbook.Figure 8–8 shows the timing waveform for the PS configuration schemeusing a configuration device.Figure 8–8. PS Configuration Using a Configuration Device Timing WaveformnINIT_CONF or VCC/nCONFIGOE/nSTATUSnCS/CONF_DONEDCLKDATAt PORt CHt DSU t CLt OEZXD D D D0 1 2 3 D nUser I/OINIT_DONEt DHt COTri-StateTri-StateUser ModeNote to Figure 8–8:(1) Mercury devices enter user-mode 136 clock cycles after CONF_DONE goes high. APEX 20K devices enter user-mode40 clock cycles after CONF_DONE goes high. The initialization clock can come from the Mercury or APEX 20Kinternal oscillator or the CLKUSR pin. ACEX 1K and FLEX 10K devices enter user-mode 10 clock cycles afterCONF_DONE goes high. The initialization clock can come from DCLK or CLKUSR.(1)f For timing information, refer to the Altera Configuration Devices, chapter 1the Enhanced Configuration Devices (EPC4, EPC8, and EPC16) Data Sheet,chapter 2, or the Configuration Devices for SRAM-based LUT Devices DataSheet chapter 5 in volume 2 of the Configuration Handbook.fDevice configuration options and how to create configuration files arediscussed further in Software Settings, chapters 6 and 7 in volume 2 of theConfiguration Handbook.Altera Corporation 8–19August 2005 Configuration Handbook, Volume 1