Single-Ended I/O Standards Specifications
                                                                
                                                                
                                                            
                                                                
                                                                
                                                                    Single-Ended SSTL, HSTL, and HSUL I/O Reference Voltage Specifications
                                                                
                                                                
                                                            
                                                                
                                                                
                                                                    Single-Ended SSTL, HSTL, and HSUL I/O Standards Signal Specifications
                                                                
                                                                
                                                            
                                                                
                                                                
                                                                    Differential SSTL I/O Standards Specifications
                                                                
                                                                
                                                            
                                                                
                                                                
                                                                    Differential HSTL and HSUL I/O Standards Specifications
                                                                
                                                                
                                                            
                                                                
                                                                
                                                                    Differential I/O Standards Specifications
                                                                
                                                                
                                                            
                                                        
                                                    
                                                
                                                
                                                    
                                                    
                                                        High-Speed I/O Specifications
                                                    
                                                    
                                                
                                                    
                                                    
                                                        DPA Lock Time Specifications
                                                    
                                                    
                                                
                                                    
                                                    
                                                        LVDS Soft-CDR/DPA Sinusoidal Jitter Tolerance Specifications
                                                    
                                                    
                                                
                                                    
                                                    
                                                        Memory Standards Supported by the Hard Memory Controller
                                                    
                                                    
                                                
                                                    
                                                    
                                                        DLL Range Specifications
                                                    
                                                    
                                                
                                                    
                                                    
                                                        DQS Logic Block Specifications
                                                    
                                                    
                                                
                                                    
                                                    
                                                        Memory Output Clock Jitter Specifications
                                                    
                                                    
                                                
                                                    
                                                    
                                                        OCT Calibration Block Specifications
                                                    
                                                    
                                                
                                            
                                        
                                    
                                    
                                        
                                        
                                            POR Specifications
                                        
                                        
                                    
                                        
                                        
                                            JTAG Configuration Timing
                                        
                                        
                                    
                                        
                                            FPP Configuration Timing
                                        
                                        
                                        
                                    
                                        
                                        
                                            AS Configuration Timing
                                        
                                        
                                    
                                        
                                        
                                            DCLK Frequency Specification in the AS Configuration Scheme
                                        
                                        
                                    
                                        
                                        
                                            PS Configuration Timing
                                        
                                        
                                    
                                        
                                        
                                            Initialization
                                        
                                        
                                    
                                        
                                        
                                            Configuration Files
                                        
                                        
                                    
                                        
                                        
                                            Minimum Configuration Time Estimation
                                        
                                        
                                    
                                        
                                        
                                            Remote System Upgrades
                                        
                                        
                                    
                                        
                                        
                                            User Watchdog Internal Circuitry Timing Specifications
                                        
                                        
                                    
                                
                            PS Configuration Timing
| Symbol | Parameter | Minimum | Maximum | Unit | 
|---|---|---|---|---|
| tCF2CD | nCONFIG low to CONF_DONE low | — | 1,440 | ns | 
| tCF2ST0 | nCONFIG low to nSTATUS low | — | 960 | ns | 
| tCFG | nCONFIG low pulse width | 2 | — | μs | 
| tSTATUS | nSTATUS low pulse width | 268 | 3,000 79 | μs | 
| tCF2ST1 | nCONFIG high to nSTATUS high | — | 3,000 80 | μs | 
| tCF2CK 81 | nCONFIG high to first rising edge on DCLK | 3,010 | — | μs | 
| tST2CK 81 | nSTATUS high to first rising edge of DCLK | 10 | — | μs | 
| tDSU | DATA[] setup time before rising edge on DCLK | 5.5 | — | ns | 
| tDH | DATA[] hold time after rising edge on DCLK | 0 | — | ns | 
| tCH | DCLK high time | 0.45 × 1/fMAX | — | s | 
| tCL | DCLK low time | 0.45 × 1/fMAX | — | s | 
| tCLK | DCLK period | 1/fMAX | — | s | 
| fMAX | DCLK frequency | — | 125 | MHz | 
| tCD2UM | CONF_DONE high to user mode 82 | 175 | 830 | μs | 
| tCD2CU | CONF_DONE high to CLKUSR enabled | 4 × maximum DCLK period | — | — | 
| tCD2UMC | CONF_DONE high to user mode with CLKUSR option on | tCD2CU + (600 × CLKUSR period) | — | — | 
   Related Information
   
 
    
  
 
 
  79 This value is applicable if you do not delay configuration by extending the nCONFIG or nSTATUS low pulse width. 
 
 
 
  80 This value is applicable if you do not delay configuration by externally holding the nSTATUS low. 
 
 
 
  81 If nSTATUS is monitored, follow the tST2CK specification. If nSTATUS is not monitored, follow the tCF2CK specification. 
 
 
 
  82 The minimum and maximum numbers apply only if you choose the internal oscillator as the clock source for initializing the device.