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
                                        
                                        
                                    
                                
                            POR Specifications
Power-on reset (POR) delay is defined as the delay between the time when all the power supplies monitored by the POR circuitry reach the minimum recommended operating voltage to the time when the nSTATUS is released high and your device is ready to begin configuration.
| POR Delay | Minimum | Maximum | Unit | 
|---|---|---|---|
| Fast | 4 | 12 69 | ms | 
| Standard | 100 | 300 | ms | 
   Related Information
   
 
    
  
 
 
  69 The maximum pulse width of the fast POR delay is 12 ms, providing enough time for the PCIe hard IP to initialize after the POR trip.