| Parameters | 
                                
                                                                                                            
                                            | Factory Lead Time | 
                                            5 Weeks | 
                                        
                                                                            
                                            | Mounting Type | 
                                            Surface Mount | 
                                        
                                                                            
                                            | Package / Case | 
                                            256-BBGA, FCBGA | 
                                        
                                                                            
                                            | Supplier Device Package | 
                                            256-FCBGA (17x17) | 
                                        
                                                                            
                                            | Packaging | 
                                            Tray | 
                                        
                                                                            
                                            | Part Status | 
                                            Active | 
                                        
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 
                                            4 (72 Hours) | 
                                        
                                                                            
                                            | Voltage - Supply | 
                                            970mV 1.2V | 
                                        
                                                                            
                                            | Function | 
                                            Ethernet | 
                                        
                                                                            
                                            | Interface | 
                                            SPI | 
                                        
                                                                            
                                            | Number of Circuits | 
                                            4 | 
                                        
                                                                            
                                            | RoHS Status | 
                                            ROHS3 Compliant | 
                                        
                                                                                                    
                            
                         
                                                VSC8258YMR-01 Overview
To save board space, the 256-BBGA, FCBGA package is used.To pack telecommunications equipment, the way of Tray is used.Mounting type Surface Mount is used.An 4-circuit makes up this  telecom IC .Providing 970mV 1.2V wtelecom IC's efficiencyh the correct supply voltage will improve efficiency.
VSC8258YMR-01 Features
Available in the 256-BBGA, FCBGA package
VSC8258YMR-01 Applications
There are a lot of Microchip Technology VSC8258YMR-01 Telecom applications. 
- Inverse Multiplexing for ATM (IMA)
 - Fiber Optic Terminals
 - T1/E1/J1 Multiplexer and Channel Banks
 - CSU/DSU E1 Interface
 - E1 Rates PCM Line Interface
 - Home Gateway
 - Channel Banks
 - Switching Systems
 - PBX (Private Branch Exchange)
 - Hybrid fiber coax (HFC)