System Specification
                            
                            
                        
                            
                                Device Selection
                            
                            
                        
                            
                                Early System and Board Planning
                            
                            
                        
                            
                                Pin Connection Considerations for Board Design
                            
                            
                        
                            
                                I/O and Clock Planning
                            
                            
                        
                            
                                Design Entry
                            
                            
                        
                            
                                Design Implementation, Analysis, Optimization, and Verification
                            
                            
                        
                            
                            
                                Design Checklist
                            
                        
                            
                                Appendix: Cyclone® 10 GX Transceiver Design Guidelines
                            
                            
                        
                            
                            
                                Conclusion
                            
                        
                            
                            
                                Document Revision History
                            
                        
                    
                PHY Layer Transceiver Components
 Transceivers in  Cyclone® 10 GX devices support both Physical Medium Attachment (PMA) and Physical Coding Sublayer (PCS) functions at the physical (PHY) layer. 
  
 
  A PMA is the transceiver's electrical interface to the physical medium. The transceiver PMA consists of standard blocks such as:
- serializer/deserializer (SERDES)
 - clock and data recovery PLL
 - analog front end transmit drivers
 - analog front end receive buffers
 
The PCS can be bypassed with a PCS-Direct configuration. Both the PMA and PCS blocks are fed by multiple clock networks driven by high performance PLLs. In PCS-Direct configuration, the data flow is through the PCS block, but all the internal PCS blocks are bypassed. In this mode, the PCS functionality is implemented in the FPGA fabric.