Configuration Handbook - Kamami.pl

Configuring Stratix & Stratix GX DevicesFigure 11–19 shows the Stratix and Stratix GX timing waveforms whenusing strobed nRS and nWS signals.Figure 11–19. PPA Timing Waveforms Using Strobed nRS & nWS Signalst CF2ST1nCONFIGnSTATUSCONF_DONEnCS (1)CS (1)DATA[7..0]nWSnRSINIT_DONEt CF2SCDtt CF2WSt CF2ST0t STATUSt CSSUt WS2RS(2)t CSH(2)Byte 0 Byte 1 Byte n(3)t DSU(2)WSP t RS2WSt WS2RS(2)t CFGt RSD7User I/ODATA7/RDYnBSY (4)t DHt RDY2WSt WS2Bt BUSY(2)(2)t CD2UMNotes to Figure 11–19:(1) The user can toggle nCS or CS during configuration if the design meets the specification for t CSSU , t WSP , and t CSH .(2) Device I/O pins are in user mode.(3) The DATA[7..0] pins are available as user I/Os after configuration and the state of theses pins depends on thedual-purpose pin settings. Do not leave DATA[7..0] floating. If these pins are not used in user-mode, you shoulddrive them high or low, whichever is more convenient.(4) DATA7 is a bidirectional pin. It represents an input for data input, but represents an output to show the status ofRDYnBSY.Altera Corporation 11–35July 2005 Stratix Device Handbook, Volume 2