Intel® Stratix® 10 JTAG Boundary-Scan Testing User Guide
                    
                        ID
                        683207
                    
                
                
                    Date
                    7/27/2021
                
                
                    Public
                
            
                
                    
                    
                        1. Intel® Stratix® 10 Overview
                    
                
                    
                        2. Intel® Stratix® 10 JTAG BST Architecture
                    
                    
                
                    
                        3. Intel® Stratix® 10 BST Operation Control
                    
                    
                
                    
                    
                        4. Intel® Stratix® 10 I/O Voltage for JTAG Operation
                    
                
                    
                    
                        5. Performing Intel® Stratix® 10 Boundary-Scan Testing
                    
                
                    
                        6. Enabling and Disabling Intel® Stratix® 10 BST Circuitry
                    
                    
                
                    
                    
                        7. Intel® Stratix® 10 IEEE Std. 1149.1 BST Guidelines
                    
                
                    
                    
                        8. Document Revision History for the Intel® Stratix® 10 JTAG Boundary-Scan Testing User Guide
                    
                
            
        2.3. IEEE Std. 1149.1 Boundary-Scan Register
The boundary-scan register is a large serial shift register that uses the TDI pin as an input and the TDO pin as an output. The boundary-scan register consists of boundary-scan cells for each I/O pin and padding bits. You can use the boundary-scan register to test external pin connections or to capture internal data.
   Figure 2.  Boundary-Scan RegisterThis figure shows how test data is serially shifted around the periphery of the IEEE Std. 1149.1 device.