Configuration Handbook - Kamami.pl

Passive Serial ConfigurationPS Configuration Using a Configuration DeviceYou can use an Altera enhanced configuration device to configureStratix III devices using a serial configuration bitstream. Configurationdata is stored in the configuration device. Figure 11–21 shows theconfiguration interface connections between a Stratix III device and aconfiguration device.1 The figures in this chapter only show the configuration-relatedpins and the configuration pin connections between theconfiguration device and the device.fFor more information on the enhanced configuration device and flashinterface pins (such as PGM[2..0], EXCLK, PORSEL, A[20..0], andDQ[15..0]), refer to the Enhanced Configuration Devices (EPC4, EPC8,and EPC16) Data Sheet in volume 2 of the Configuration Handbook.Figure 11–21. Single Device PS Configuration Using an EnhancedConfiguration DeviceV CCStratix III DeviceMSEL2DCLKDATA0nSTATUSCONF_DONEnCONFIGVCC (1) VCC (1)10 kΩ (3) 10 kΩ (3)EnhancedConfigurationDeviceDCLKDATAOE (3)nCS (3)nINIT_CONF (2)MSEL1MSEL0N.C.nCEOnCEGNDGNDNotes to Figure 11–21:(1) You should connect the pull-up resistor to the same supply voltage as theconfiguration device.(2) The nINIT_CONF pin is available on enhanced configuration devices and has aninternal pull-up resistor that is always active. This means you should not use anexternal pull-up resistor on the nINIT_CONF-nCONFIG line. You do not need toconnect the nINIT_CONF pin if its functionality is not used. If you do not usenINIT_CONF, you must pull nCONFIG to V CC through a 10-kΩ resistor.(3) The enhanced configuration devices' OE and nCS pins have internal programmablepull-up resistors. If you use internal pull-up resistors, you should not use externalpull-up resistors on these pins. The internal pull-up resistors are used by default inthe Quartus II software. To turn off the internal pull-up resistors, check the DisablenCS and OE pull-ups on configuration device option when generatingprogramming files.11–50 Altera CorporationStratix III Device Handbook, Volume 1 May 2007